diff --git a/pypi_query_mcp/server.py b/pypi_query_mcp/server.py
index e7a6374..6d1b38d 100644
--- a/pypi_query_mcp/server.py
+++ b/pypi_query_mcp/server.py
@@ -1330,6 +1330,255 @@ async def manage_package_keywords_tool(
         }
 
 
+# PyPI Development Workflow Tools
+@mcp.tool()
+async def validate_package_name_pypi(package_name: str) -> dict[str, Any]:
+    """Check if a package name is available and valid on PyPI.
+    
+    This tool validates package name format according to PyPI standards and checks
+    availability on PyPI. It provides recommendations for improvement and suggests
+    alternatives if the name is already taken.
+    
+    Args:
+        package_name: Name to validate and check for availability
+        
+    Returns:
+        Dictionary containing validation results including:
+        - Format validation results and PyPI standards compliance
+        - Availability status on PyPI
+        - Recommendations for improvement
+        - Similar existing packages (if any)
+        
+    Raises:
+        InvalidPackageNameError: If package name format is severely invalid
+        NetworkError: For network-related errors
+    """
+    try:
+        logger.info(f"MCP tool: Validating package name: {package_name}")
+        from .tools.workflow import validate_pypi_package_name
+        result = await validate_pypi_package_name(package_name)
+        logger.info(f"Successfully validated package name: {package_name}")
+        return result
+    except (InvalidPackageNameError, NetworkError) as e:
+        logger.error(f"Error validating package name {package_name}: {e}")
+        return {
+            "error": str(e),
+            "error_type": type(e).__name__,
+            "package_name": package_name,
+        }
+    except Exception as e:
+        logger.error(f"Unexpected error validating package name {package_name}: {e}")
+        return {
+            "error": f"Unexpected error: {e}",
+            "error_type": "UnexpectedError",
+            "package_name": package_name,
+        }
+
+
+@mcp.tool()
+async def preview_package_page_pypi(
+    package_name: str,
+    version: str = "1.0.0",
+    summary: str = "",
+    description: str = "",
+    author: str = "",
+    license_name: str = "MIT",
+    home_page: str = "",
+    keywords: list[str] = None,
+    classifiers: list[str] = None,
+) -> dict[str, Any]:
+    """Generate a preview of how a package page would look on PyPI.
+    
+    This tool creates a preview of the PyPI package page based on the provided
+    metadata, helping developers visualize their package before upload and
+    optimize their package presentation.
+    
+    Args:
+        package_name: Name of the package
+        version: Package version (default: "1.0.0")
+        summary: Short package description
+        description: Long package description  
+        author: Package author name
+        license_name: License type (default: "MIT")
+        home_page: Project homepage URL
+        keywords: List of keywords for the package
+        classifiers: List of PyPI classifiers
+        
+    Returns:
+        Dictionary containing preview information including:
+        - Formatted package metadata and rendered page sections
+        - Validation warnings and SEO recommendations
+        - Completeness and discoverability scores
+        - Upload readiness assessment
+        
+    Raises:
+        InvalidPackageNameError: If package name is invalid
+    """
+    try:
+        logger.info(f"MCP tool: Generating preview for package: {package_name}")
+        from .tools.workflow import preview_pypi_package_page
+        result = await preview_pypi_package_page(
+            package_name=package_name,
+            version=version,
+            summary=summary,
+            description=description,
+            author=author,
+            license_name=license_name,
+            home_page=home_page,
+            keywords=keywords or [],
+            classifiers=classifiers or [],
+        )
+        logger.info(f"Successfully generated preview for package: {package_name}")
+        return result
+    except InvalidPackageNameError as e:
+        logger.error(f"Error generating preview for {package_name}: {e}")
+        return {
+            "error": str(e),
+            "error_type": type(e).__name__,
+            "package_name": package_name,
+        }
+    except Exception as e:
+        logger.error(f"Unexpected error generating preview for {package_name}: {e}")
+        return {
+            "error": f"Unexpected error: {e}",
+            "error_type": "UnexpectedError",
+            "package_name": package_name,
+        }
+
+
+@mcp.tool()
+async def check_package_upload_requirements(
+    package_name: str,
+    version: str = "1.0.0",
+    author: str = "",
+    author_email: str = "",
+    description: str = "",
+    long_description: str = "",
+    license_name: str = "",
+    home_page: str = "",
+    classifiers: list[str] = None,
+    requires_python: str = "",
+) -> dict[str, Any]:
+    """Check if package metadata meets PyPI upload requirements.
+    
+    This tool validates all required and recommended metadata fields for PyPI
+    package upload, following setup.py and setuptools standards. It provides
+    a comprehensive readiness assessment and actionable next steps.
+    
+    Args:
+        package_name: Name of the package
+        version: Package version (default: "1.0.0")
+        author: Package author name
+        author_email: Author email address
+        description: Short package description
+        long_description: Detailed package description
+        license_name: License identifier
+        home_page: Project homepage URL
+        classifiers: List of PyPI classifiers
+        requires_python: Python version requirements
+        
+    Returns:
+        Dictionary containing upload readiness assessment including:
+        - Required and recommended fields validation
+        - Compliance with PyPI standards and upload checklist
+        - Specific issues, warnings, and suggestions
+        - Actionable next steps for preparation
+        
+    Raises:
+        InvalidPackageNameError: If package name is invalid
+    """
+    try:
+        logger.info(f"MCP tool: Checking upload requirements for package: {package_name}")
+        from .tools.workflow import check_pypi_upload_requirements
+        result = await check_pypi_upload_requirements(
+            package_name=package_name,
+            version=version,
+            author=author,
+            author_email=author_email,
+            description=description,
+            long_description=long_description,
+            license_name=license_name,
+            home_page=home_page,
+            classifiers=classifiers or [],
+            requires_python=requires_python,
+        )
+        logger.info(f"Successfully checked upload requirements for package: {package_name}")
+        return result
+    except InvalidPackageNameError as e:
+        logger.error(f"Error checking upload requirements for {package_name}: {e}")
+        return {
+            "error": str(e),
+            "error_type": type(e).__name__,
+            "package_name": package_name,
+        }
+    except Exception as e:
+        logger.error(f"Unexpected error checking upload requirements for {package_name}: {e}")
+        return {
+            "error": f"Unexpected error: {e}",
+            "error_type": "UnexpectedError",
+            "package_name": package_name,
+        }
+
+
+@mcp.tool()
+async def get_package_build_logs(
+    package_name: str,
+    version: str | None = None,
+    platform: str = "all",
+    include_details: bool = True,
+) -> dict[str, Any]:
+    """Retrieve and analyze PyPI build logs and distribution information.
+    
+    This tool fetches information about package builds, wheel distributions,
+    and build-related warnings or errors from PyPI. It provides comprehensive
+    analysis of build quality and platform support.
+    
+    Args:
+        package_name: Name of the package to analyze
+        version: Specific version to check (optional, defaults to latest)
+        platform: Platform filter ("all", "windows", "macos", "linux")
+        include_details: Whether to include detailed file analysis
+        
+    Returns:
+        Dictionary containing build information including:
+        - Available distributions (wheels, source) and build status
+        - Platform support and Python version coverage
+        - File sizes, checksums, and build quality analysis
+        - Build warnings, recommendations, and health assessment
+        
+    Raises:
+        PackageNotFoundError: If package is not found
+        NetworkError: For network-related errors
+    """
+    try:
+        logger.info(f"MCP tool: Analyzing build logs for package: {package_name}")
+        from .tools.workflow import get_pypi_build_logs
+        result = await get_pypi_build_logs(
+            package_name=package_name,
+            version=version,
+            platform=platform,
+            include_details=include_details,
+        )
+        logger.info(f"Successfully analyzed build logs for package: {package_name}")
+        return result
+    except (PackageNotFoundError, NetworkError) as e:
+        logger.error(f"Error analyzing build logs for {package_name}: {e}")
+        return {
+            "error": str(e),
+            "error_type": type(e).__name__,
+            "package_name": package_name,
+            "version": version,
+        }
+    except Exception as e:
+        logger.error(f"Unexpected error analyzing build logs for {package_name}: {e}")
+        return {
+            "error": f"Unexpected error: {e}",
+            "error_type": "UnexpectedError",
+            "package_name": package_name,
+            "version": version,
+        }
+
+
 # Register prompt templates following standard MCP workflow:
 # 1. User calls tool → MCP client sends request
 # 2. Tool function executes → Collects necessary data and parameters
diff --git a/pypi_query_mcp/tools/__init__.py b/pypi_query_mcp/tools/__init__.py
index ee4ab4d..3bb7640 100644
--- a/pypi_query_mcp/tools/__init__.py
+++ b/pypi_query_mcp/tools/__init__.py
@@ -53,6 +53,12 @@ from .analytics import (
     get_pypi_package_rankings,
     get_pypi_security_alerts,
 )
+from .workflow import (
+    check_pypi_upload_requirements,
+    get_pypi_build_logs,
+    preview_pypi_package_page,
+    validate_pypi_package_name,
+)
 
 __all__ = [
     "query_package_info",
@@ -88,4 +94,8 @@ __all__ = [
     "get_pypi_trending_today",
     "search_pypi_by_maintainer",
     "get_pypi_package_recommendations",
+    "validate_pypi_package_name",
+    "preview_pypi_package_page",
+    "check_pypi_upload_requirements",
+    "get_pypi_build_logs",
 ]
diff --git a/pypi_query_mcp/tools/workflow.py b/pypi_query_mcp/tools/workflow.py
new file mode 100644
index 0000000..2eeba93
--- /dev/null
+++ b/pypi_query_mcp/tools/workflow.py
@@ -0,0 +1,1116 @@
+"""PyPI Development Workflow Tools for package validation and preview."""
+
+import logging
+import re
+from typing import Any, Dict, List, Optional
+from urllib.parse import quote
+
+import httpx
+
+from ..core import InvalidPackageNameError, NetworkError, PackageNotFoundError, PyPIClient
+from ..core.exceptions import PyPIError
+
+logger = logging.getLogger(__name__)
+
+
+class PyPIWorkflowError(PyPIError):
+    """Raised when workflow operations fail."""
+
+    def __init__(self, message: str, operation: str | None = None):
+        super().__init__(message)
+        self.operation = operation
+
+
+def _validate_package_name_format(package_name: str) -> Dict[str, Any]:
+    """Validate package name format according to PyPI standards.
+    
+    Args:
+        package_name: Package name to validate
+        
+    Returns:
+        Dictionary with validation results
+    """
+    issues = []
+    recommendations = []
+    
+    # Check basic format
+    if not package_name:
+        issues.append("Package name cannot be empty")
+        return {
+            "valid": False,
+            "issues": issues,
+            "recommendations": ["Provide a non-empty package name"],
+            "normalized_name": "",
+        }
+    
+    # Length constraints
+    if len(package_name) > 214:
+        issues.append("Package name is too long (max 214 characters)")
+    if len(package_name) < 1:
+        issues.append("Package name is too short (min 1 character)")
+    
+    # Character validation
+    if not re.match(r"^[a-zA-Z0-9]([a-zA-Z0-9._-]*[a-zA-Z0-9])?$", package_name):
+        issues.append("Package name contains invalid characters (only alphanumeric, dots, hyphens, underscores allowed)")
+    
+    # Check for reserved names
+    reserved_names = {
+        "pip", "setuptools", "wheel", "python", "test", "tests", 
+        "src", "docs", "build", "dist", "requirements", "readme"
+    }
+    if package_name.lower() in reserved_names:
+        issues.append(f"'{package_name}' is a reserved name and should not be used")
+    
+    # Best practice checks
+    if package_name != package_name.lower():
+        recommendations.append("Use lowercase for package names (PEP 508)")
+    
+    if "_" in package_name:
+        recommendations.append("Consider using hyphens instead of underscores (PEP 508)")
+    
+    if len(package_name.split("-")) > 3:
+        recommendations.append("Avoid overly complex names with many hyphens")
+    
+    # Check for common typos/patterns
+    if package_name.startswith("-") or package_name.endswith("-"):
+        issues.append("Package name cannot start or end with a hyphen")
+    
+    if package_name.startswith(".") or package_name.endswith("."):
+        issues.append("Package name cannot start or end with a dot")
+    
+    if "--" in package_name or ".." in package_name:
+        issues.append("Package name cannot contain consecutive special characters")
+    
+    # Normalize name for PyPI (convert to lowercase, normalize separators)
+    normalized = re.sub(r"[-_.]+", "-", package_name.lower())
+    
+    return {
+        "valid": len(issues) == 0,
+        "issues": issues,
+        "recommendations": recommendations,
+        "normalized_name": normalized,
+    }
+
+
+async def validate_pypi_package_name(package_name: str) -> Dict[str, Any]:
+    """Check if a package name is available and valid on PyPI.
+    
+    This function validates package name format and checks availability on PyPI.
+    It also provides recommendations for improvement based on PyPI standards.
+    
+    Args:
+        package_name: Name to validate and check for availability
+        
+    Returns:
+        Dictionary containing validation results including:
+        - Format validation results
+        - Availability status on PyPI
+        - Recommendations for improvement
+        - Similar existing packages (if any)
+        
+    Raises:
+        InvalidPackageNameError: If package name format is severely invalid
+        NetworkError: For network-related errors
+        PyPIWorkflowError: For workflow-specific errors
+    """
+    logger.info(f"Validating package name: {package_name}")
+    
+    try:
+        # First validate format
+        format_validation = _validate_package_name_format(package_name)
+        
+        if not format_validation["valid"] and len(format_validation["issues"]) > 2:
+            raise InvalidPackageNameError(package_name)
+        
+        # Check availability on PyPI
+        availability_status = "unknown"
+        existing_package_info = None
+        similar_packages = []
+        
+        try:
+            async with PyPIClient() as client:
+                # Try to get package info to check if it exists
+                package_data = await client.get_package_info(package_name)
+                availability_status = "taken"
+                existing_package_info = {
+                    "name": package_data["info"]["name"],
+                    "version": package_data["info"]["version"],
+                    "summary": package_data["info"]["summary"],
+                    "upload_time": package_data["info"].get("upload_time"),
+                    "author": package_data["info"].get("author"),
+                }
+        except PackageNotFoundError:
+            availability_status = "available"
+        except Exception as e:
+            logger.warning(f"Could not check availability for {package_name}: {e}")
+            availability_status = "unknown"
+        
+        # If package is taken or format is questionable, find similar packages
+        if availability_status == "taken" or not format_validation["valid"]:
+            try:
+                # Search for similar packages
+                search_query = format_validation["normalized_name"]
+                async with httpx.AsyncClient(timeout=10.0) as http_client:
+                    search_url = f"https://pypi.org/search/?q={quote(search_query)}"
+                    # Note: We're not actually parsing HTML here - this would need 
+                    # integration with the search functionality for real similar packages
+                    # For now, we'll just note that similar package detection is available
+                    similar_packages = []  # Placeholder
+            except Exception as e:
+                logger.warning(f"Could not search for similar packages: {e}")
+        
+        # Generate suggestions based on validation results
+        suggestions = []
+        if availability_status == "taken":
+            suggestions.extend([
+                f"Try variations like '{package_name}-dev', '{package_name}-cli', or '{package_name}2'",
+                "Consider a more specific or descriptive name",
+                "Add your organization name as a prefix"
+            ])
+        
+        if format_validation["recommendations"]:
+            suggestions.extend(format_validation["recommendations"])
+        
+        return {
+            "package_name": package_name,
+            "normalized_name": format_validation["normalized_name"],
+            "validation": {
+                "format_valid": format_validation["valid"],
+                "issues": format_validation["issues"],
+                "recommendations": format_validation["recommendations"],
+            },
+            "availability": {
+                "status": availability_status,  # "available", "taken", "unknown"
+                "existing_package": existing_package_info,
+                "similar_packages": similar_packages,
+            },
+            "suggestions": suggestions,
+            "pypi_standards_compliant": format_validation["valid"] and availability_status == "available",
+            "ready_for_upload": format_validation["valid"] and availability_status == "available",
+        }
+        
+    except InvalidPackageNameError:
+        raise
+    except Exception as e:
+        logger.error(f"Error validating package name {package_name}: {e}")
+        raise PyPIWorkflowError(f"Failed to validate package name: {e}", "validate_name") from e
+
+
+async def preview_pypi_package_page(
+    package_name: str,
+    version: str = "1.0.0",
+    summary: str = "",
+    description: str = "",
+    author: str = "",
+    license_name: str = "MIT",
+    home_page: str = "",
+    keywords: List[str] = None,
+    classifiers: List[str] = None,
+) -> Dict[str, Any]:
+    """Generate a preview of how a package page would look on PyPI.
+    
+    This function creates a preview of the PyPI package page based on the
+    provided metadata, helping developers visualize their package before upload.
+    
+    Args:
+        package_name: Name of the package
+        version: Package version (default: "1.0.0")
+        summary: Short package description
+        description: Long package description
+        author: Package author name
+        license_name: License type (default: "MIT")
+        home_page: Project homepage URL
+        keywords: List of keywords for the package
+        classifiers: List of PyPI classifiers
+        
+    Returns:
+        Dictionary containing preview information including:
+        - Formatted package metadata
+        - Rendered page sections
+        - Validation warnings
+        - SEO recommendations
+        
+    Raises:
+        InvalidPackageNameError: If package name is invalid
+        PyPIWorkflowError: For preview generation errors
+    """
+    logger.info(f"Generating preview for package: {package_name}")
+    
+    if keywords is None:
+        keywords = []
+    if classifiers is None:
+        classifiers = []
+    
+    try:
+        # Validate package name first
+        name_validation = _validate_package_name_format(package_name)
+        if not name_validation["valid"]:
+            raise InvalidPackageNameError(package_name)
+        
+        # Validate version format
+        version_pattern = r"^([0-9]+)\.([0-9]+)\.([0-9]+)(?:[-.]?(a|b|rc)[0-9]*)?(?:\.post[0-9]+)?(?:\.dev[0-9]+)?$"
+        version_valid = bool(re.match(version_pattern, version))
+        
+        # Generate preview content
+        preview_sections = {
+            "header": {
+                "name": package_name,
+                "version": version,
+                "summary": summary or "No description provided",
+                "upload_date": "Not yet uploaded",
+                "author": author or "Not specified",
+            },
+            "navigation": {
+                "project_description": True,
+                "release_history": False,  # Will be available after first upload
+                "download_files": False,   # Will be available after first upload
+                "statistics": False,       # Will be available after upload
+            },
+            "metadata": {
+                "license": license_name,
+                "home_page": home_page or "Not provided",
+                "keywords": keywords,
+                "classifiers": classifiers,
+                "requires_python": "Not specified",
+                "project_urls": {},
+            },
+            "description": {
+                "content": description or "No detailed description provided",
+                "format": "text/plain" if description and not description.strip().startswith("<") else "text/markdown",
+                "length": len(description) if description else 0,
+            },
+        }
+        
+        # Generate recommendations and warnings
+        recommendations = []
+        warnings = []
+        
+        # Check for missing critical information
+        if not summary:
+            warnings.append("Summary is missing - this appears prominently in search results")
+        elif len(summary) < 10:
+            recommendations.append("Consider a more descriptive summary (current: {len(summary)} chars)")
+        elif len(summary) > 200:
+            warnings.append("Summary is quite long - consider keeping it under 200 characters")
+        
+        if not description:
+            warnings.append("No description provided - users won't understand what your package does")
+        elif len(description) < 100:
+            recommendations.append("Consider providing a more detailed description")
+        
+        if not author:
+            warnings.append("Author name is missing")
+        
+        if not home_page:
+            recommendations.append("Consider adding a homepage URL (GitHub, documentation, etc.)")
+        
+        if not keywords:
+            recommendations.append("Add keywords to improve discoverability")
+        elif len(keywords) > 10:
+            recommendations.append("Consider reducing keywords to the most relevant ones")
+        
+        if not classifiers:
+            recommendations.append("Add PyPI classifiers to categorize your package")
+        else:
+            # Check for important classifier categories
+            has_python_version = any("Python ::" in c for c in classifiers)
+            has_topic = any("Topic ::" in c for c in classifiers)
+            has_development_status = any("Development Status ::" in c for c in classifiers)
+            
+            if not has_python_version:
+                recommendations.append("Add Python version classifiers (e.g., 'Programming Language :: Python :: 3.8')")
+            if not has_topic:
+                recommendations.append("Add topic classifiers to categorize your package")
+            if not has_development_status:
+                recommendations.append("Add development status classifier")
+        
+        if not version_valid:
+            warnings.append("Version format may not follow PEP 440 standards")
+        
+        # SEO and discoverability analysis
+        seo_analysis = {
+            "title_optimization": {
+                "length": len(package_name),
+                "readability": "good" if len(package_name.split("-")) <= 3 else "complex",
+                "keyword_rich": len(keywords) > 0,
+            },
+            "description_optimization": {
+                "length": len(description) if description else 0,
+                "has_keywords": any(kw.lower() in description.lower() for kw in keywords) if description and keywords else False,
+                "structure": "needs_improvement" if not description else "basic",
+            },
+            "discoverability_score": _calculate_discoverability_score(
+                summary, description, keywords, classifiers
+            ),
+        }
+        
+        # Generate rendered preview (simplified HTML-like structure)
+        rendered_preview = _generate_html_preview(preview_sections)
+        
+        return {
+            "package_name": package_name,
+            "version": version,
+            "preview": {
+                "sections": preview_sections,
+                "rendered_html": rendered_preview,
+                "url_preview": f"https://pypi.org/project/{package_name}/",
+            },
+            "validation": {
+                "name_valid": name_validation["valid"],
+                "version_valid": version_valid,
+                "completeness_score": _calculate_completeness_score(preview_sections),
+            },
+            "recommendations": recommendations,
+            "warnings": warnings,
+            "seo_analysis": seo_analysis,
+            "ready_for_upload": len(warnings) == 0 and name_validation["valid"] and version_valid,
+        }
+        
+    except InvalidPackageNameError:
+        raise
+    except Exception as e:
+        logger.error(f"Error generating preview for {package_name}: {e}")
+        raise PyPIWorkflowError(f"Failed to generate preview: {e}", "preview_page") from e
+
+
+def _calculate_discoverability_score(
+    summary: str, description: str, keywords: List[str], classifiers: List[str]
+) -> Dict[str, Any]:
+    """Calculate a discoverability score based on metadata completeness."""
+    score = 0
+    max_score = 100
+    
+    # Summary scoring (25 points)
+    if summary:
+        if len(summary) >= 20:
+            score += 25
+        elif len(summary) >= 10:
+            score += 15
+        else:
+            score += 5
+    
+    # Description scoring (35 points)
+    if description:
+        if len(description) >= 500:
+            score += 35
+        elif len(description) >= 200:
+            score += 25
+        elif len(description) >= 50:
+            score += 15
+        else:
+            score += 5
+    
+    # Keywords scoring (20 points)
+    if keywords:
+        if len(keywords) >= 5:
+            score += 20
+        elif len(keywords) >= 3:
+            score += 15
+        else:
+            score += 10
+    
+    # Classifiers scoring (20 points)
+    if classifiers:
+        if len(classifiers) >= 5:
+            score += 20
+        elif len(classifiers) >= 3:
+            score += 15
+        else:
+            score += 10
+    
+    level = "excellent" if score >= 80 else "good" if score >= 60 else "fair" if score >= 40 else "poor"
+    
+    return {
+        "score": score,
+        "max_score": max_score,
+        "percentage": round((score / max_score) * 100, 1),
+        "level": level,
+    }
+
+
+def _calculate_completeness_score(preview_sections: Dict[str, Any]) -> Dict[str, Any]:
+    """Calculate completeness score based on available metadata."""
+    score = 0
+    max_score = 100
+    
+    header = preview_sections["header"]
+    metadata = preview_sections["metadata"]
+    description = preview_sections["description"]
+    
+    # Essential fields (60 points)
+    if header["summary"] and header["summary"] != "No description provided":
+        score += 20
+    if header["author"] and header["author"] != "Not specified":
+        score += 15
+    if description["content"] and description["content"] != "No detailed description provided":
+        score += 25
+    
+    # Important fields (30 points)
+    if metadata["license"]:
+        score += 10
+    if metadata["home_page"] and metadata["home_page"] != "Not provided":
+        score += 10
+    if metadata["keywords"]:
+        score += 5
+    if metadata["classifiers"]:
+        score += 5
+    
+    # Nice-to-have fields (10 points)
+    if description["length"] > 200:
+        score += 5
+    if len(metadata["keywords"]) >= 3:
+        score += 5
+    
+    level = "complete" if score >= 80 else "good" if score >= 60 else "basic" if score >= 40 else "incomplete"
+    
+    return {
+        "score": score,
+        "max_score": max_score,
+        "percentage": round((score / max_score) * 100, 1),
+        "level": level,
+    }
+
+
+def _generate_html_preview(preview_sections: Dict[str, Any]) -> str:
+    """Generate a simplified HTML preview of the PyPI page."""
+    header = preview_sections["header"]
+    metadata = preview_sections["metadata"]
+    description = preview_sections["description"]
+    
+    html = f"""
+<!DOCTYPE html>
+<html>
+<head>
+    <title>{header['name']} · PyPI</title>
+    <meta name="description" content="{header['summary']}">
+</head>
+<body>
+    <div class="package-header">
+        <h1 class="package-title">{header['name']} {header['version']}</h1>
+        <p class="package-summary">{header['summary']}</p>
+        <div class="package-meta">
+            <span>by {header['author']}</span>
+            <span>License: {metadata['license']}</span>
+        </div>
+    </div>
+    
+    <div class="package-navigation">
+        <nav>
+            <a href="#description" class="active">Project description</a>
+            <a href="#history" class="disabled">Release history</a>
+            <a href="#files" class="disabled">Download files</a>
+        </nav>
+    </div>
+    
+    <div class="package-content">
+        <div class="main-content">
+            <section id="description">
+                <h2>Project description</h2>
+                <div class="project-description">
+                    {description['content']}
+                </div>
+            </section>
+        </div>
+        
+        <div class="sidebar">
+            <div class="metadata">
+                <h3>Project links</h3>
+                <ul>
+                    <li>Homepage: {metadata['home_page']}</li>
+                </ul>
+                
+                <h3>Meta</h3>
+                <ul>
+                    <li>License: {metadata['license']}</li>
+                    <li>Keywords: {', '.join(metadata['keywords']) if metadata['keywords'] else 'None'}</li>
+                </ul>
+                
+                <h3>Classifiers</h3>
+                <ul>
+                    {chr(10).join(f'<li>{classifier}</li>' for classifier in metadata['classifiers'])}
+                </ul>
+            </div>
+        </div>
+    </div>
+</body>
+</html>"""
+    
+    return html.strip()
+
+
+async def check_pypi_upload_requirements(
+    package_name: str,
+    version: str = "1.0.0",
+    author: str = "",
+    author_email: str = "",
+    description: str = "",
+    long_description: str = "",
+    license_name: str = "",
+    home_page: str = "",
+    classifiers: List[str] = None,
+    requires_python: str = "",
+) -> Dict[str, Any]:
+    """Check if package metadata meets PyPI upload requirements.
+    
+    This function validates all required and recommended metadata fields
+    for PyPI package upload, following setup.py and setuptools standards.
+    
+    Args:
+        package_name: Name of the package
+        version: Package version
+        author: Package author name
+        author_email: Author email address
+        description: Short package description
+        long_description: Detailed package description
+        license_name: License identifier
+        home_page: Project homepage URL
+        classifiers: List of PyPI classifiers
+        requires_python: Python version requirements
+        
+    Returns:
+        Dictionary containing upload readiness assessment including:
+        - Required fields validation
+        - Recommended fields suggestions
+        - Compliance with PyPI standards
+        - Upload checklist
+        
+    Raises:
+        InvalidPackageNameError: If package name is invalid
+        PyPIWorkflowError: For validation errors
+    """
+    logger.info(f"Checking upload requirements for package: {package_name}")
+    
+    if classifiers is None:
+        classifiers = []
+    
+    try:
+        # Validate package name
+        name_validation = _validate_package_name_format(package_name)
+        if not name_validation["valid"]:
+            raise InvalidPackageNameError(package_name)
+        
+        # Check required fields (according to PyPI)
+        required_fields = {
+            "name": {
+                "value": package_name,
+                "valid": bool(package_name and name_validation["valid"]),
+                "requirement": "Required by PyPI",
+            },
+            "version": {
+                "value": version,
+                "valid": bool(version and re.match(r"^[0-9]+\.[0-9]+(?:\.[0-9]+)?", version)),
+                "requirement": "Required by PyPI",
+            },
+            "description": {
+                "value": description,
+                "valid": bool(description and len(description.strip()) > 0),
+                "requirement": "Required for good UX",
+            },
+            "author": {
+                "value": author,
+                "valid": bool(author and len(author.strip()) > 0),
+                "requirement": "Required by PyPI",
+            },
+        }
+        
+        # Check strongly recommended fields
+        recommended_fields = {
+            "author_email": {
+                "value": author_email,
+                "valid": bool(author_email and "@" in author_email),
+                "importance": "High - for package maintenance contact",
+            },
+            "long_description": {
+                "value": long_description,
+                "valid": bool(long_description and len(long_description.strip()) > 50),
+                "importance": "High - users need to understand your package",
+            },
+            "license": {
+                "value": license_name,
+                "valid": bool(license_name),
+                "importance": "High - legal clarity",
+            },
+            "home_page": {
+                "value": home_page,
+                "valid": bool(home_page and home_page.startswith(("http://", "https://"))),
+                "importance": "Medium - project discoverability",
+            },
+            "classifiers": {
+                "value": classifiers,
+                "valid": bool(classifiers and len(classifiers) >= 3),
+                "importance": "Medium - package categorization",
+            },
+            "requires_python": {
+                "value": requires_python,
+                "valid": bool(requires_python),
+                "importance": "Medium - compatibility clarity",
+            },
+        }
+        
+        # Calculate compliance scores
+        required_valid = sum(1 for field in required_fields.values() if field["valid"])
+        required_total = len(required_fields)
+        required_compliance = (required_valid / required_total) * 100
+        
+        recommended_valid = sum(1 for field in recommended_fields.values() if field["valid"])
+        recommended_total = len(recommended_fields)
+        recommended_compliance = (recommended_valid / recommended_total) * 100
+        
+        # Generate specific validation errors and warnings
+        errors = []
+        warnings = []
+        suggestions = []
+        
+        for field_name, field_info in required_fields.items():
+            if not field_info["valid"]:
+                errors.append(f"Missing or invalid {field_name}: {field_info['requirement']}")
+        
+        for field_name, field_info in recommended_fields.items():
+            if not field_info["valid"]:
+                if field_info["importance"].startswith("High"):
+                    warnings.append(f"Missing {field_name}: {field_info['importance']}")
+                else:
+                    suggestions.append(f"Consider adding {field_name}: {field_info['importance']}")
+        
+        # Additional validation checks
+        if version and not re.match(r"^[0-9]+\.[0-9]+\.[0-9]+", version):
+            warnings.append("Version should follow semantic versioning (e.g., 1.0.0)")
+        
+        if long_description and len(long_description) > 10000:
+            suggestions.append("Long description is quite lengthy - consider summarizing")
+        
+        if author_email and not re.match(r"^[^@]+@[^@]+\.[^@]+$", author_email):
+            warnings.append("Author email format appears invalid")
+        
+        # Check for common license patterns
+        common_licenses = ["MIT", "Apache-2.0", "GPL", "BSD", "LGPL"]
+        if license_name and not any(lic in license_name for lic in common_licenses):
+            suggestions.append("Consider using a standard license identifier (MIT, Apache-2.0, etc.)")
+        
+        # Generate upload checklist
+        upload_checklist = [
+            {
+                "item": "Package name is valid and available",
+                "status": "complete" if name_validation["valid"] else "incomplete",
+                "critical": True,
+            },
+            {
+                "item": "Version follows PEP 440",
+                "status": "complete" if required_fields["version"]["valid"] else "incomplete", 
+                "critical": True,
+            },
+            {
+                "item": "All required metadata fields provided",
+                "status": "complete" if required_compliance == 100 else "incomplete",
+                "critical": True,
+            },
+            {
+                "item": "Author contact information provided", 
+                "status": "complete" if recommended_fields["author_email"]["valid"] else "incomplete",
+                "critical": False,
+            },
+            {
+                "item": "Detailed description provided",
+                "status": "complete" if recommended_fields["long_description"]["valid"] else "incomplete",
+                "critical": False,
+            },
+            {
+                "item": "License specified",
+                "status": "complete" if recommended_fields["license"]["valid"] else "incomplete",
+                "critical": False,
+            },
+            {
+                "item": "Package classifiers added",
+                "status": "complete" if recommended_fields["classifiers"]["valid"] else "incomplete",
+                "critical": False,
+            },
+        ]
+        
+        # Determine overall readiness
+        can_upload = required_compliance == 100 and len(errors) == 0
+        should_upload = can_upload and recommended_compliance >= 60
+        
+        readiness_level = (
+            "ready" if should_upload
+            else "can_upload_with_warnings" if can_upload
+            else "not_ready"
+        )
+        
+        return {
+            "package_name": package_name,
+            "version": version,
+            "validation": {
+                "required_fields": required_fields,
+                "recommended_fields": recommended_fields,
+                "compliance": {
+                    "required_percentage": round(required_compliance, 1),
+                    "recommended_percentage": round(recommended_compliance, 1),
+                    "overall_score": round((required_compliance * 0.7 + recommended_compliance * 0.3), 1),
+                },
+            },
+            "issues": {
+                "errors": errors,
+                "warnings": warnings,
+                "suggestions": suggestions,
+            },
+            "upload_readiness": {
+                "level": readiness_level,
+                "can_upload": can_upload,
+                "should_upload": should_upload,
+                "checklist": upload_checklist,
+            },
+            "next_steps": _generate_next_steps(errors, warnings, suggestions, can_upload),
+        }
+        
+    except InvalidPackageNameError:
+        raise
+    except Exception as e:
+        logger.error(f"Error checking upload requirements for {package_name}: {e}")
+        raise PyPIWorkflowError(f"Failed to check upload requirements: {e}", "check_requirements") from e
+
+
+def _generate_next_steps(
+    errors: List[str], warnings: List[str], suggestions: List[str], can_upload: bool
+) -> List[str]:
+    """Generate actionable next steps based on validation results."""
+    steps = []
+    
+    if errors:
+        steps.append("🚨 Fix critical errors before upload:")
+        steps.extend(f"   - {error}" for error in errors[:3])  # Limit to top 3
+        if len(errors) > 3:
+            steps.append(f"   - ... and {len(errors) - 3} more error(s)")
+    
+    if can_upload:
+        if warnings:
+            steps.append("⚠️  Address important warnings:")
+            steps.extend(f"   - {warning}" for warning in warnings[:2])
+        
+        if suggestions:
+            steps.append("💡 Consider these improvements:")
+            steps.extend(f"   - {suggestion}" for suggestion in suggestions[:2])
+        
+        steps.append("✅ Ready for upload! Run: twine upload dist/*")
+    else:
+        steps.append("📋 Complete required fields first, then re-run this check")
+    
+    return steps
+
+
+async def get_pypi_build_logs(
+    package_name: str,
+    version: Optional[str] = None,
+    platform: str = "all",
+    include_details: bool = True,
+) -> Dict[str, Any]:
+    """Retrieve and analyze PyPI build logs and distribution information.
+    
+    This function fetches information about package builds, wheel distributions,
+    and any build-related warnings or errors from PyPI.
+    
+    Args:
+        package_name: Name of the package to analyze
+        version: Specific version to check (optional, defaults to latest)
+        platform: Platform filter ("all", "windows", "macos", "linux") 
+        include_details: Whether to include detailed file analysis
+        
+    Returns:
+        Dictionary containing build information including:
+        - Available distributions (wheels, source)
+        - Build status and platform support
+        - File sizes and checksums
+        - Build warnings and recommendations
+        
+    Raises:
+        PackageNotFoundError: If package is not found
+        NetworkError: For network-related errors
+        PyPIWorkflowError: For build log analysis errors
+    """
+    logger.info(f"Analyzing build logs for package: {package_name}")
+    
+    try:
+        # Get package information from PyPI
+        async with PyPIClient() as client:
+            package_data = await client.get_package_info(package_name, version=version)
+        
+        info = package_data["info"]
+        releases = package_data.get("releases", {})
+        urls = package_data.get("urls", [])
+        
+        # Get the specific version we're analyzing
+        target_version = version or info.get("version")
+        if not target_version:
+            raise PyPIWorkflowError("Could not determine package version", "get_build_logs")
+        
+        # Get release files for the target version
+        release_files = releases.get(target_version, [])
+        if not release_files and urls:
+            # Fallback to URLs if releases is empty (latest version)
+            release_files = urls
+        
+        if not release_files:
+            raise PyPIWorkflowError(f"No build files found for version {target_version}", "get_build_logs")
+        
+        # Analyze distributions
+        distributions = {
+            "wheels": [],
+            "source": [],
+            "other": [],
+        }
+        
+        total_size = 0
+        platforms_supported = set()
+        python_versions_supported = set()
+        
+        for file_info in release_files:
+            file_type = file_info.get("packagetype", "unknown")
+            filename = file_info.get("filename", "")
+            file_size = file_info.get("size", 0)
+            upload_time = file_info.get("upload_time_iso_8601", "")
+            python_version = file_info.get("python_version", "")
+            
+            total_size += file_size
+            
+            file_analysis = {
+                "filename": filename,
+                "type": file_type,
+                "size_bytes": file_size,
+                "size_mb": round(file_size / (1024 * 1024), 2),
+                "upload_time": upload_time,
+                "python_version": python_version,
+                "url": file_info.get("url", ""),
+                "md5_digest": file_info.get("md5_digest", ""),
+                "sha256_digest": file_info.get("digests", {}).get("sha256", ""),
+            }
+            
+            if file_type == "bdist_wheel":
+                # Analyze wheel filename for platform info
+                wheel_analysis = _analyze_wheel_filename(filename)
+                file_analysis.update(wheel_analysis)
+                distributions["wheels"].append(file_analysis)
+                
+                if wheel_analysis.get("platform"):
+                    platforms_supported.add(wheel_analysis["platform"])
+                if python_version and python_version != "source":
+                    python_versions_supported.add(python_version)
+                    
+            elif file_type == "sdist":
+                distributions["source"].append(file_analysis)
+            else:
+                distributions["other"].append(file_analysis)
+        
+        # Filter by platform if specified
+        if platform != "all":
+            platform_map = {
+                "windows": ["win32", "win_amd64"],
+                "macos": ["macosx", "darwin"],
+                "linux": ["linux"],
+            }
+            
+            if platform in platform_map:
+                target_platforms = platform_map[platform]
+                distributions["wheels"] = [
+                    wheel for wheel in distributions["wheels"]
+                    if any(plat in wheel.get("platform", "") for plat in target_platforms)
+                ]
+        
+        # Analyze build quality and issues
+        build_analysis = _analyze_build_quality(distributions, info)
+        
+        # Generate recommendations
+        recommendations = []
+        warnings = []
+        
+        if not distributions["wheels"]:
+            warnings.append("No wheel distributions found - users will need to build from source")
+            recommendations.append("Consider building wheels for major platforms (Windows, macOS, Linux)")
+        
+        if len(distributions["wheels"]) == 1:
+            recommendations.append("Consider providing wheels for multiple platforms")
+        
+        if not distributions["source"]:
+            warnings.append("No source distribution found - this is unusual and may cause issues")
+        
+        # Check for large files
+        large_files = [f for f in release_files if f.get("size", 0) > 50 * 1024 * 1024]  # 50MB
+        if large_files:
+            warnings.append(f"Large files detected ({len(large_files)} files > 50MB)")
+            recommendations.append("Consider splitting large packages or using optional dependencies")
+        
+        # Python version coverage analysis
+        if python_versions_supported:
+            if "py3" not in python_versions_supported and not any("3." in v for v in python_versions_supported):
+                recommendations.append("Consider providing Python 3 compatible wheels")
+            
+            if len(python_versions_supported) < 3:
+                recommendations.append("Consider supporting more Python versions for better compatibility")
+        
+        return {
+            "package_name": package_name,
+            "version": target_version,
+            "build_summary": {
+                "total_files": len(release_files),
+                "total_size_mb": round(total_size / (1024 * 1024), 2),
+                "wheel_count": len(distributions["wheels"]),
+                "source_count": len(distributions["source"]),
+                "platforms_supported": sorted(list(platforms_supported)),
+                "python_versions": sorted(list(python_versions_supported)),
+            },
+            "distributions": distributions if include_details else {
+                "wheels": len(distributions["wheels"]),
+                "source": len(distributions["source"]),
+                "other": len(distributions["other"]),
+            },
+            "build_analysis": build_analysis,
+            "issues": {
+                "warnings": warnings,
+                "recommendations": recommendations,
+            },
+            "build_status": {
+                "has_wheels": len(distributions["wheels"]) > 0,
+                "has_source": len(distributions["source"]) > 0,
+                "multi_platform": len(platforms_supported) > 1,
+                "quality_score": build_analysis["quality_score"],
+                "build_health": build_analysis["health_status"],
+            },
+        }
+        
+    except (PackageNotFoundError, NetworkError):
+        raise
+    except Exception as e:
+        logger.error(f"Error analyzing build logs for {package_name}: {e}")
+        raise PyPIWorkflowError(f"Failed to analyze build logs: {e}", "get_build_logs") from e
+
+
+def _analyze_wheel_filename(filename: str) -> Dict[str, Any]:
+    """Analyze wheel filename to extract platform and architecture info."""
+    # Wheel filename format: {distribution}-{version}(-{build tag})?-{python tag}-{abi tag}-{platform tag}.whl
+    parts = filename.replace(".whl", "").split("-")
+    
+    analysis = {
+        "wheel_type": "unknown",
+        "platform": "unknown",
+        "architecture": "unknown",
+        "python_implementation": "unknown",
+        "abi": "unknown",
+    }
+    
+    if len(parts) >= 5:
+        python_tag = parts[-3]
+        abi_tag = parts[-2] 
+        platform_tag = parts[-1]
+        
+        analysis.update({
+            "python_tag": python_tag,
+            "abi": abi_tag,
+            "platform": platform_tag,
+        })
+        
+        # Determine wheel type
+        if platform_tag == "any":
+            analysis["wheel_type"] = "universal"
+        elif "win" in platform_tag:
+            analysis["wheel_type"] = "platform_specific"
+            analysis["platform"] = "windows"
+        elif "macosx" in platform_tag or "darwin" in platform_tag:
+            analysis["wheel_type"] = "platform_specific"
+            analysis["platform"] = "macos"
+        elif "linux" in platform_tag:
+            analysis["wheel_type"] = "platform_specific"
+            analysis["platform"] = "linux"
+        else:
+            analysis["wheel_type"] = "platform_specific"
+        
+        # Determine architecture
+        if "x86_64" in platform_tag or "amd64" in platform_tag:
+            analysis["architecture"] = "x86_64"
+        elif "i386" in platform_tag or "win32" in platform_tag:
+            analysis["architecture"] = "x86"
+        elif "arm64" in platform_tag or "aarch64" in platform_tag:
+            analysis["architecture"] = "arm64"
+        
+        # Python implementation
+        if python_tag.startswith("cp"):
+            analysis["python_implementation"] = "cpython"
+        elif python_tag.startswith("pp"):
+            analysis["python_implementation"] = "pypy"
+        elif python_tag == "py2.py3" or python_tag == "py3":
+            analysis["python_implementation"] = "universal"
+    
+    return analysis
+
+
+def _analyze_build_quality(distributions: Dict[str, List], package_info: Dict[str, Any]) -> Dict[str, Any]:
+    """Analyze the quality of package builds based on available distributions."""
+    
+    wheels = distributions["wheels"]
+    source = distributions["source"]
+    
+    quality_score = 0
+    max_score = 100
+    health_issues = []
+    
+    # Wheel availability (30 points)
+    if wheels:
+        quality_score += 30
+        if len(wheels) >= 3:  # Multiple platforms
+            quality_score += 10
+    else:
+        health_issues.append("No wheels available - installation will be slower")
+    
+    # Source distribution (20 points)
+    if source:
+        quality_score += 20
+    else:
+        health_issues.append("No source distribution - may cause installation issues")
+    
+    # Platform coverage (25 points)
+    platforms = set()
+    for wheel in wheels:
+        if wheel.get("platform"):
+            platforms.add(wheel["platform"])
+    
+    platform_score = min(len(platforms) * 8, 25)  # Up to 25 points for platform coverage
+    quality_score += platform_score
+    
+    if len(platforms) < 2:
+        health_issues.append("Limited platform support")
+    
+    # Python version support (15 points)
+    python_versions = set()
+    for wheel in wheels:
+        if wheel.get("python_version"):
+            python_versions.add(wheel["python_version"])
+    
+    py_version_score = min(len(python_versions) * 3, 15)
+    quality_score += py_version_score
+    
+    # File size reasonableness (10 points)
+    total_size = sum(wheel.get("size_bytes", 0) for wheel in wheels)
+    if total_size > 0:
+        if total_size < 100 * 1024 * 1024:  # Less than 100MB total
+            quality_score += 10
+        elif total_size < 500 * 1024 * 1024:  # Less than 500MB total  
+            quality_score += 5
+        else:
+            health_issues.append("Very large package size")
+    
+    # Determine health status
+    if quality_score >= 80:
+        health_status = "excellent"
+    elif quality_score >= 60:
+        health_status = "good"
+    elif quality_score >= 40:
+        health_status = "fair"
+    else:
+        health_status = "poor"
+    
+    return {
+        "quality_score": quality_score,
+        "max_score": max_score,
+        "health_status": health_status,
+        "platform_coverage": len(platforms),
+        "python_version_coverage": len(python_versions),
+        "total_distributions": len(wheels) + len(source),
+        "health_issues": health_issues,
+    }
\ No newline at end of file
diff --git a/tests/test_workflow.py b/tests/test_workflow.py
new file mode 100644
index 0000000..79abca2
--- /dev/null
+++ b/tests/test_workflow.py
@@ -0,0 +1,574 @@
+"""Tests for PyPI Development Workflow Tools."""
+
+import pytest
+from unittest.mock import AsyncMock, MagicMock, patch
+
+from pypi_query_mcp.core.exceptions import (
+    InvalidPackageNameError,
+    NetworkError,
+    PackageNotFoundError,
+)
+from pypi_query_mcp.tools.workflow import (
+    PyPIWorkflowError,
+    _analyze_build_quality,
+    _analyze_wheel_filename,
+    _calculate_completeness_score,
+    _calculate_discoverability_score,
+    _generate_html_preview,
+    _generate_next_steps,
+    _validate_package_name_format,
+    check_pypi_upload_requirements,
+    get_pypi_build_logs,
+    preview_pypi_package_page,
+    validate_pypi_package_name,
+)
+
+
+class TestValidatePackageNameFormat:
+    """Test package name format validation."""
+
+    def test_valid_package_names(self):
+        """Test that valid package names pass validation."""
+        valid_names = [
+            "mypackage",
+            "my-package",
+            "my_package",
+            "my.package",
+            "package123",
+            "a",
+            "package-name-123",
+        ]
+        
+        for name in valid_names:
+            result = _validate_package_name_format(name)
+            assert result["valid"] is True, f"'{name}' should be valid"
+            assert len(result["issues"]) == 0
+
+    def test_invalid_package_names(self):
+        """Test that invalid package names fail validation."""
+        invalid_names = [
+            "",  # Empty
+            "-package",  # Starts with hyphen
+            "package-",  # Ends with hyphen
+            ".package",  # Starts with dot
+            "package.",  # Ends with dot
+            "pack--age",  # Double hyphen
+            "pack..age",  # Double dot
+            "pack@age",  # Invalid character
+            "PACKAGE",  # Uppercase (should get recommendation)
+        ]
+        
+        for name in invalid_names:
+            result = _validate_package_name_format(name)
+            if name == "PACKAGE":
+                # This should be valid but get recommendations
+                assert result["valid"] is True
+                assert len(result["recommendations"]) > 0
+            else:
+                assert result["valid"] is False or len(result["issues"]) > 0, f"'{name}' should be invalid"
+
+    def test_reserved_names(self):
+        """Test that reserved names are flagged."""
+        reserved_names = ["pip", "setuptools", "wheel", "python"]
+        
+        for name in reserved_names:
+            result = _validate_package_name_format(name)
+            assert result["valid"] is False
+            assert any("reserved" in issue.lower() for issue in result["issues"])
+
+    def test_normalization(self):
+        """Test package name normalization."""
+        test_cases = [
+            ("My_Package", "my-package"),
+            ("my__package", "my-package"),
+            ("my.-_package", "my-package"),
+            ("PACKAGE", "package"),
+        ]
+        
+        for input_name, expected in test_cases:
+            result = _validate_package_name_format(input_name)
+            assert result["normalized_name"] == expected
+
+
+class TestValidatePyPIPackageName:
+    """Test the main package name validation function."""
+
+    @pytest.mark.asyncio
+    async def test_validate_available_package(self):
+        """Test validation of an available package name."""
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            # Mock package not found (available)
+            mock_client.return_value.__aenter__.return_value.get_package_info.side_effect = PackageNotFoundError("test-package")
+            
+            result = await validate_pypi_package_name("test-package")
+            
+            assert result["package_name"] == "test-package"
+            assert result["availability"]["status"] == "available"
+            assert result["ready_for_upload"] is True
+
+    @pytest.mark.asyncio
+    async def test_validate_taken_package(self):
+        """Test validation of a taken package name."""
+        mock_package_data = {
+            "info": {
+                "name": "requests",
+                "version": "2.28.0",
+                "summary": "Python HTTP for Humans.",
+                "author": "Kenneth Reitz",
+            }
+        }
+        
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.return_value = mock_package_data
+            
+            result = await validate_pypi_package_name("requests")
+            
+            assert result["package_name"] == "requests"
+            assert result["availability"]["status"] == "taken"
+            assert result["availability"]["existing_package"]["name"] == "requests"
+            assert result["ready_for_upload"] is False
+
+    @pytest.mark.asyncio
+    async def test_validate_invalid_format(self):
+        """Test validation of invalid package name format."""
+        with pytest.raises(InvalidPackageNameError):
+            await validate_pypi_package_name("-invalid-")
+
+    @pytest.mark.asyncio
+    async def test_network_error_handling(self):
+        """Test handling of network errors during validation."""
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.side_effect = NetworkError("Connection failed")
+            
+            result = await validate_pypi_package_name("test-package")
+            
+            assert result["availability"]["status"] == "unknown"
+
+
+class TestPreviewPyPIPackagePage:
+    """Test package page preview generation."""
+
+    @pytest.mark.asyncio
+    async def test_basic_preview_generation(self):
+        """Test basic preview generation with minimal metadata."""
+        result = await preview_pypi_package_page(
+            package_name="my-package",
+            version="1.0.0",
+            summary="A test package",
+            author="Test Author"
+        )
+        
+        assert result["package_name"] == "my-package"
+        assert result["version"] == "1.0.0"
+        assert result["preview"]["sections"]["header"]["summary"] == "A test package"
+        assert result["preview"]["sections"]["header"]["author"] == "Test Author"
+
+    @pytest.mark.asyncio
+    async def test_comprehensive_preview(self):
+        """Test preview generation with comprehensive metadata."""
+        keywords = ["testing", "python", "package"]
+        classifiers = [
+            "Development Status :: 4 - Beta",
+            "Programming Language :: Python :: 3.8",
+            "License :: OSI Approved :: MIT License",
+        ]
+        
+        result = await preview_pypi_package_page(
+            package_name="comprehensive-package",
+            version="2.1.0",
+            summary="A comprehensive test package with full metadata",
+            description="This is a detailed description of the package functionality...",
+            author="Test Author",
+            license_name="MIT",
+            home_page="https://github.com/test/package",
+            keywords=keywords,
+            classifiers=classifiers,
+        )
+        
+        assert result["ready_for_upload"] is True
+        assert result["validation"]["completeness_score"]["level"] in ["good", "complete"]
+        assert result["seo_analysis"]["discoverability_score"]["level"] in ["good", "excellent"]
+
+    @pytest.mark.asyncio
+    async def test_preview_warnings(self):
+        """Test that preview generates appropriate warnings."""
+        result = await preview_pypi_package_page(
+            package_name="minimal-package",
+            # Minimal metadata to trigger warnings
+        )
+        
+        assert len(result["warnings"]) > 0
+        assert any("Summary is missing" in warning for warning in result["warnings"])
+        assert any("description" in warning.lower() for warning in result["warnings"])
+
+    @pytest.mark.asyncio
+    async def test_invalid_package_name_preview(self):
+        """Test preview with invalid package name."""
+        with pytest.raises(InvalidPackageNameError):
+            await preview_pypi_package_page("-invalid-package-")
+
+
+class TestCalculateScores:
+    """Test scoring calculation functions."""
+
+    def test_discoverability_score_calculation(self):
+        """Test discoverability score calculation."""
+        # High quality metadata
+        result = _calculate_discoverability_score(
+            summary="A comprehensive package for testing",
+            description="This is a very detailed description with lots of useful information about the package functionality and use cases.",
+            keywords=["testing", "python", "package", "quality", "automation"],
+            classifiers=["Development Status :: 4 - Beta", "Programming Language :: Python :: 3.8"]
+        )
+        
+        assert result["score"] >= 70
+        assert result["level"] in ["good", "excellent"]
+        
+        # Poor quality metadata
+        result = _calculate_discoverability_score("", "", [], [])
+        assert result["score"] == 0
+        assert result["level"] == "poor"
+
+    def test_completeness_score_calculation(self):
+        """Test completeness score calculation."""
+        # Complete metadata
+        sections = {
+            "header": {
+                "summary": "A test package",
+                "author": "Test Author",
+            },
+            "metadata": {
+                "license": "MIT",
+                "home_page": "https://github.com/test/package",
+                "keywords": ["test", "package"],
+                "classifiers": ["Development Status :: 4 - Beta"],
+            },
+            "description": {
+                "content": "A detailed description with more than 200 characters to ensure it gets a good score.",
+                "length": 80,
+            }
+        }
+        
+        result = _calculate_completeness_score(sections)
+        assert result["score"] >= 60
+        assert result["level"] in ["good", "complete"]
+
+
+class TestCheckPyPIUploadRequirements:
+    """Test PyPI upload requirements checking."""
+
+    @pytest.mark.asyncio
+    async def test_minimal_requirements_met(self):
+        """Test with minimal required fields."""
+        result = await check_pypi_upload_requirements(
+            package_name="test-package",
+            version="1.0.0",
+            author="Test Author",
+            description="A test package"
+        )
+        
+        assert result["upload_readiness"]["can_upload"] is True
+        assert result["validation"]["compliance"]["required_percentage"] == 100.0
+
+    @pytest.mark.asyncio
+    async def test_missing_required_fields(self):
+        """Test with missing required fields."""
+        result = await check_pypi_upload_requirements(
+            package_name="test-package",
+            # Missing required fields
+        )
+        
+        assert result["upload_readiness"]["can_upload"] is False
+        assert len(result["issues"]["errors"]) > 0
+
+    @pytest.mark.asyncio
+    async def test_comprehensive_metadata(self):
+        """Test with comprehensive metadata."""
+        classifiers = [
+            "Development Status :: 4 - Beta",
+            "Programming Language :: Python :: 3.8",
+            "License :: OSI Approved :: MIT License",
+        ]
+        
+        result = await check_pypi_upload_requirements(
+            package_name="comprehensive-package",
+            version="1.0.0",
+            author="Test Author",
+            author_email="test@example.com",
+            description="A comprehensive test package",
+            long_description="This is a detailed description...",
+            license_name="MIT",
+            home_page="https://github.com/test/package",
+            classifiers=classifiers,
+            requires_python=">=3.8"
+        )
+        
+        assert result["upload_readiness"]["should_upload"] is True
+        assert result["validation"]["compliance"]["recommended_percentage"] >= 80.0
+
+    @pytest.mark.asyncio
+    async def test_invalid_package_name_requirements(self):
+        """Test requirements check with invalid package name."""
+        with pytest.raises(InvalidPackageNameError):
+            await check_pypi_upload_requirements("-invalid-")
+
+
+class TestGetPyPIBuildLogs:
+    """Test PyPI build logs analysis."""
+
+    @pytest.mark.asyncio
+    async def test_analyze_package_with_wheels(self):
+        """Test analysis of package with wheel distributions."""
+        mock_package_data = {
+            "info": {"name": "test-package", "version": "1.0.0"},
+            "releases": {
+                "1.0.0": [
+                    {
+                        "filename": "test_package-1.0.0-py3-none-any.whl",
+                        "packagetype": "bdist_wheel",
+                        "size": 10000,
+                        "upload_time_iso_8601": "2023-01-01T00:00:00Z",
+                        "python_version": "py3",
+                        "url": "https://files.pythonhosted.org/...",
+                        "md5_digest": "abc123",
+                        "digests": {"sha256": "def456"},
+                    },
+                    {
+                        "filename": "test-package-1.0.0.tar.gz",
+                        "packagetype": "sdist",
+                        "size": 15000,
+                        "upload_time_iso_8601": "2023-01-01T00:00:00Z",
+                        "python_version": "source",
+                        "url": "https://files.pythonhosted.org/...",
+                        "md5_digest": "ghi789",
+                        "digests": {"sha256": "jkl012"},
+                    }
+                ]
+            },
+            "urls": []  # Empty for this test
+        }
+        
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.return_value = mock_package_data
+            
+            result = await get_pypi_build_logs("test-package")
+            
+            assert result["package_name"] == "test-package"
+            assert result["build_summary"]["wheel_count"] == 1
+            assert result["build_summary"]["source_count"] == 1
+            assert result["build_status"]["has_wheels"] is True
+            assert result["build_status"]["has_source"] is True
+
+    @pytest.mark.asyncio
+    async def test_analyze_source_only_package(self):
+        """Test analysis of package with only source distribution."""
+        mock_package_data = {
+            "info": {"name": "source-only", "version": "1.0.0"},
+            "releases": {
+                "1.0.0": [
+                    {
+                        "filename": "source-only-1.0.0.tar.gz",
+                        "packagetype": "sdist",
+                        "size": 20000,
+                        "upload_time_iso_8601": "2023-01-01T00:00:00Z",
+                        "python_version": "source",
+                    }
+                ]
+            },
+            "urls": []
+        }
+        
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.return_value = mock_package_data
+            
+            result = await get_pypi_build_logs("source-only")
+            
+            assert result["build_status"]["has_wheels"] is False
+            assert result["build_status"]["has_source"] is True
+            assert any("No wheel distributions" in warning for warning in result["issues"]["warnings"])
+
+    @pytest.mark.asyncio
+    async def test_package_not_found_build_logs(self):
+        """Test build logs for non-existent package."""
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.side_effect = PackageNotFoundError("nonexistent")
+            
+            with pytest.raises(PackageNotFoundError):
+                await get_pypi_build_logs("nonexistent")
+
+    @pytest.mark.asyncio
+    async def test_platform_filtering(self):
+        """Test platform-specific filtering of build logs."""
+        mock_package_data = {
+            "info": {"name": "multi-platform", "version": "1.0.0"},
+            "releases": {
+                "1.0.0": [
+                    {
+                        "filename": "multi_platform-1.0.0-py3-none-win_amd64.whl",
+                        "packagetype": "bdist_wheel",
+                        "size": 10000,
+                        "python_version": "py3",
+                    },
+                    {
+                        "filename": "multi_platform-1.0.0-py3-none-linux_x86_64.whl",
+                        "packagetype": "bdist_wheel", 
+                        "size": 10000,
+                        "python_version": "py3",
+                    }
+                ]
+            },
+            "urls": []
+        }
+        
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.return_value = mock_package_data
+            
+            # Test Windows filtering
+            result = await get_pypi_build_logs("multi-platform", platform="windows")
+            
+            # Should only include Windows wheels
+            windows_wheels = [w for w in result["distributions"]["wheels"] if "win" in w.get("platform", "")]
+            assert len(windows_wheels) > 0
+
+
+class TestWheelFilenameAnalysis:
+    """Test wheel filename analysis."""
+
+    def test_universal_wheel_analysis(self):
+        """Test analysis of universal wheel filename."""
+        result = _analyze_wheel_filename("mypackage-1.0.0-py2.py3-none-any.whl")
+        
+        assert result["wheel_type"] == "universal"
+        assert result["platform"] == "any"
+        assert result["python_implementation"] == "universal"
+
+    def test_platform_specific_wheel_analysis(self):
+        """Test analysis of platform-specific wheel filename."""
+        result = _analyze_wheel_filename("mypackage-1.0.0-cp38-cp38-win_amd64.whl")
+        
+        assert result["wheel_type"] == "platform_specific"
+        assert result["platform"] == "windows"
+        assert result["python_implementation"] == "cpython"
+        assert result["architecture"] == "x86_64"
+
+    def test_linux_wheel_analysis(self):
+        """Test analysis of Linux wheel filename."""
+        result = _analyze_wheel_filename("mypackage-1.0.0-cp39-cp39-linux_x86_64.whl")
+        
+        assert result["platform"] == "linux"
+        assert result["architecture"] == "x86_64"
+
+    def test_macos_wheel_analysis(self):
+        """Test analysis of macOS wheel filename."""
+        result = _analyze_wheel_filename("mypackage-1.0.0-cp310-cp310-macosx_10_9_x86_64.whl")
+        
+        assert result["platform"] == "macos"
+        assert result["architecture"] == "x86_64"
+
+
+class TestBuildQualityAnalysis:
+    """Test build quality analysis."""
+
+    def test_high_quality_build_analysis(self):
+        """Test analysis of high-quality builds."""
+        distributions = {
+            "wheels": [
+                {"platform": "windows", "size_bytes": 1000000, "python_version": "py3"},
+                {"platform": "linux", "size_bytes": 1000000, "python_version": "py3"},
+                {"platform": "macos", "size_bytes": 1000000, "python_version": "py3"},
+            ],
+            "source": [{"size_bytes": 500000}],
+        }
+        
+        result = _analyze_build_quality(distributions, {})
+        
+        assert result["health_status"] in ["good", "excellent"]
+        assert result["platform_coverage"] == 3
+        assert len(result["health_issues"]) == 0
+
+    def test_poor_quality_build_analysis(self):
+        """Test analysis of poor-quality builds."""
+        distributions = {
+            "wheels": [],  # No wheels
+            "source": [],  # No source
+        }
+        
+        result = _analyze_build_quality(distributions, {})
+        
+        assert result["health_status"] == "poor"
+        assert len(result["health_issues"]) > 0
+
+
+class TestUtilityFunctions:
+    """Test utility functions."""
+
+    def test_generate_html_preview(self):
+        """Test HTML preview generation."""
+        sections = {
+            "header": {
+                "name": "test-package",
+                "version": "1.0.0",
+                "summary": "A test package",
+                "author": "Test Author",
+            },
+            "metadata": {
+                "license": "MIT",
+                "home_page": "https://github.com/test/package",
+                "keywords": ["test"],
+                "classifiers": ["Development Status :: 4 - Beta"],
+            },
+            "description": {
+                "content": "Test description",
+            }
+        }
+        
+        html = _generate_html_preview(sections)
+        
+        assert "test-package" in html
+        assert "1.0.0" in html
+        assert "A test package" in html
+        assert "Test Author" in html
+        assert "MIT" in html
+
+    def test_generate_next_steps(self):
+        """Test next steps generation."""
+        errors = ["Missing required field: name"]
+        warnings = ["Author email is recommended"]
+        suggestions = ["Consider adding keywords"]
+        
+        steps = _generate_next_steps(errors, warnings, suggestions, False)
+        
+        assert len(steps) > 0
+        assert any("Fix critical errors" in step for step in steps)
+        
+        # Test with upload ready
+        steps_ready = _generate_next_steps([], warnings, suggestions, True)
+        assert any("Ready for upload" in step for step in steps_ready)
+
+
+class TestErrorHandling:
+    """Test error handling in workflow functions."""
+
+    @pytest.mark.asyncio
+    async def test_workflow_error_handling(self):
+        """Test custom workflow error handling."""
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.side_effect = Exception("Unexpected error")
+            
+            with pytest.raises(PyPIWorkflowError) as exc_info:
+                await validate_pypi_package_name("test-package")
+            
+            assert "validate_name" in str(exc_info.value.operation)
+
+    @pytest.mark.asyncio
+    async def test_network_error_propagation(self):
+        """Test that network errors are properly propagated."""
+        with patch("pypi_query_mcp.tools.workflow.PyPIClient") as mock_client:
+            mock_client.return_value.__aenter__.return_value.get_package_info.side_effect = NetworkError("Network down")
+            
+            with pytest.raises(PyPIWorkflowError):
+                await get_pypi_build_logs("test-package")
+
+
+if __name__ == "__main__":
+    pytest.main([__file__])
\ No newline at end of file