Added API documentation and improved bridge functionality

- Added comprehensive GHIDRA_HTTP_API.md documenting the Java plugin's endpoints
- Improved bridge_mcp_hydra.py with better docstrings and type hints
- Updated port range calculations to use DEFAULT_GHIDRA_PORT
- Cleaned up comments and simplified code
- Improved error handling and response formatting
- Standardized API response structure across all endpoints

GHIDRA_HTTP_API.md

@@ -0,0 +1,73 @@
+# Ghidra HTTP API Documentation
+
+## Base URL
+`http://{host}:{port}/` (default port: 8192)
+
+## Endpoints
+
+### Instance Management
+- `GET /instances` - List active instances
+- `GET /info` - Get project information
+- `GET /` - Root endpoint with basic info
+
+### Program Analysis
+- `GET /functions` - List functions
+  - Parameters:
+    - `offset` - Pagination offset
+    - `limit` - Max items to return
+    - `query` - Search string for function names
+
+- `GET /functions/{name}` - Get function details
+  - Parameters:
+    - `cCode` - Return C-style code (true/false)
+    - `syntaxTree` - Include syntax tree (true/false)
+    - `simplificationStyle` - Decompiler style
+
+- `GET /get_function_by_address` - Get function by address
+  - Parameters:
+    - `address` - Memory address in hex
+
+- `GET /classes` - List classes
+- `GET /segments` - List memory segments
+- `GET /symbols/imports` - List imported symbols
+- `GET /symbols/exports` - List exported symbols
+- `GET /namespaces` - List namespaces
+- `GET /data` - List data items
+- `GET /variables` - List global variables
+- `GET /functions/{name}/variables` - List function variables
+
+### Modifications
+- `POST /functions/{name}` - Rename function
+  - Body: `{"newName": string}`
+
+- `POST /data` - Rename data at address
+  - Body: `{"address": string, "newName": string}`
+
+- `POST /set_decompiler_comment` - Add decompiler comment
+  - Body: `{"address": string, "comment": string}`
+
+- `POST /set_disassembly_comment` - Add disassembly comment
+  - Body: `{"address": string, "comment": string}`
+
+- `POST /rename_local_variable` - Rename local variable
+  - Body: `{"functionAddress": string, "oldName": string, "newName": string}`
+
+- `POST /rename_function_by_address` - Rename function by address
+  - Body: `{"functionAddress": string, "newName": string}`
+
+- `POST /set_function_prototype` - Update function prototype
+  - Body: `{"functionAddress": string, "prototype": string}`
+
+- `POST /set_local_variable_type` - Change variable type
+  - Body: `{"functionAddress": string, "variableName": string, "newType": string}`
+
+## Response Format
+All endpoints return JSON with standard structure:
+```json
+{
+  "success": boolean,
+  "result": object|array,
+  "error": string, // if success=false
+  "timestamp": number,
+  "port": number
+}

bridge_mcp_hydra.py

@@ -27,8 +27,8 @@ instances_lock = Lock()
 DEFAULT_GHIDRA_PORT = 8192
 DEFAULT_GHIDRA_HOST = "localhost"
 # Port ranges for scanning
-QUICK_DISCOVERY_RANGE = range(8192, 8202)  # Limited range for interactive/triggered discovery (10 ports)
+QUICK_DISCOVERY_RANGE = range(DEFAULT_GHIDRA_PORT, DEFAULT_GHIDRA_PORT+10)
-FULL_DISCOVERY_RANGE = range(8192, 8212)   # Wider range for background discovery (20 ports)
+FULL_DISCOVERY_RANGE = range(DEFAULT_GHIDRA_PORT, DEFAULT_GHIDRA_PORT+20)
 
 instructions = """
 GhydraMCP allows interacting with multiple Ghidra SRE instances. Ghidra SRE is a tool for reverse engineering and analyzing binaries, e.g. malware.
@@ -39,7 +39,6 @@ First, run `discover_instances` to find open Ghidra instances. List tools to see
 mcp = FastMCP("GhydraMCP", instructions=instructions)
 
 ghidra_host = os.environ.get("GHIDRA_HYDRA_HOST", DEFAULT_GHIDRA_HOST)
-# print(f"Using Ghidra host: {ghidra_host}")
 
 def get_instance_url(port: int) -> str:
     """Get URL for a Ghidra instance by port"""
@@ -47,7 +46,6 @@ def get_instance_url(port: int) -> str:
         if port in active_instances:
             return active_instances[port]["url"]
 
-        # Auto-register if not found but port is valid
         if 8192 <= port <= 65535:
             register_instance(port)
             if port in active_instances:
@@ -79,10 +77,8 @@ def _make_request(method: str, port: int, endpoint: str, params: dict = None, js
     if headers:
         request_headers.update(headers)
 
-    # Origin validation for state-changing requests
+    is_state_changing = method.upper() in ["POST", "PUT", "PATCH", "DELETE"]
-    is_state_changing = method.upper() in ["POST", "PUT", "DELETE"] # Add other methods if needed
     if is_state_changing:
-        # Extract headers from json_data if present, otherwise use provided headers
         check_headers = json_data.get("headers", {}) if isinstance(json_data, dict) else (headers or {})
         if not validate_origin(check_headers):
             return {
@@ -91,11 +87,10 @@ def _make_request(method: str, port: int, endpoint: str, params: dict = None, js
                 "status_code": 403,
                 "timestamp": int(time.time() * 1000)
             }
-        # Set Content-Type for POST/PUT if sending JSON
         if json_data is not None:
              request_headers['Content-Type'] = 'application/json'
         elif data is not None:
-             request_headers['Content-Type'] = 'text/plain' # Or appropriate type
+             request_headers['Content-Type'] = 'text/plain'
 
     try:
         response = requests.request(
@@ -105,35 +100,29 @@ def _make_request(method: str, port: int, endpoint: str, params: dict = None, js
             json=json_data,
             data=data,
             headers=request_headers,
-            timeout=10 # Increased timeout slightly
+            timeout=10
         )
 
-        # Attempt to parse JSON regardless of status code, as errors might be JSON
         try:
             parsed_json = response.json()
-            # Add timestamp if not present in the response from Ghidra
             if isinstance(parsed_json, dict) and "timestamp" not in parsed_json:
                  parsed_json["timestamp"] = int(time.time() * 1000)
             return parsed_json
         except ValueError:
-            # Handle non-JSON responses (e.g., unexpected errors, successful plain text)
             if response.ok:
-                 # Success, but not JSON - wrap it? Or assume plugin *always* returns JSON?
-                 # For now, treat unexpected non-JSON success as an error from the plugin side.
                  return {
                      "success": False,
                      "error": "Received non-JSON success response from Ghidra plugin",
                      "status_code": response.status_code,
-                     "response_text": response.text[:500], # Limit text length
+                     "response_text": response.text[:500],
                      "timestamp": int(time.time() * 1000)
                  }
             else:
-                 # Error response was not JSON
                  return {
                      "success": False,
                      "error": f"HTTP {response.status_code} - Non-JSON error response",
                      "status_code": response.status_code,
-                     "response_text": response.text[:500], # Limit text length
+                     "response_text": response.text[:500],
                      "timestamp": int(time.time() * 1000)
                  }
 
@@ -141,14 +130,14 @@ def _make_request(method: str, port: int, endpoint: str, params: dict = None, js
         return {
             "success": False,
             "error": "Request timed out",
-            "status_code": 408, # Request Timeout
+            "status_code": 408,
             "timestamp": int(time.time() * 1000)
         }
     except requests.exceptions.ConnectionError:
         return {
             "success": False,
             "error": f"Failed to connect to Ghidra instance at {url}",
-            "status_code": 503, # Service Unavailable
+            "status_code": 503,
             "timestamp": int(time.time() * 1000)
         }
     except Exception as e:
@@ -160,12 +149,11 @@ def _make_request(method: str, port: int, endpoint: str, params: dict = None, js
         }
 
 def safe_get(port: int, endpoint: str, params: dict = None) -> dict:
-    """Perform a GET request to a specific Ghidra instance and return JSON response"""
+    """Make GET request to Ghidra instance"""
     return _make_request("GET", port, endpoint, params=params)
 
 def safe_put(port: int, endpoint: str, data: dict) -> dict:
-    """Perform a PUT request to a specific Ghidra instance with JSON payload"""
+    """Make PUT request to Ghidra instance with JSON payload"""
-    # Pass headers if they exist within the data dict
     headers = data.pop("headers", None) if isinstance(data, dict) else None
     return _make_request("PUT", port, endpoint, json_data=data, headers=headers)
 
@@ -179,14 +167,18 @@ def safe_post(port: int, endpoint: str, data: dict | str) -> dict:
         headers = data.pop("headers", None)
         json_payload = data
     else:
-        text_payload = data # Assume string data is text/plain
+        text_payload = data
 
     return _make_request("POST", port, endpoint, json_data=json_payload, data=text_payload, headers=headers)
 
 # Instance management tools
 @mcp.tool()
 def list_instances() -> dict:
-    """List all active Ghidra instances"""
+    """List all active Ghidra instances
+    
+    Returns:
+        dict: Contains 'instances' list with port, url, project and file info for each instance
+    """
     with instances_lock:
         return {
             "instances": [
@@ -202,22 +194,27 @@ def list_instances() -> dict:
 
 @mcp.tool()
 def register_instance(port: int, url: str = None) -> str:
-    """Register a new Ghidra instance"""
+    """Register a new Ghidra instance
+    
+    Args:
+        port: Port number of the Ghidra instance
+        url: Optional URL if different from default http://host:port
+        
+    Returns:
+        str: Confirmation message or error
+    """
     if url is None:
         url = f"http://{ghidra_host}:{port}"
 
-    # Verify instance is reachable before registering
     try:
         test_url = f"{url}/instances"
         response = requests.get(test_url, timeout=2)
         if not response.ok:
             return f"Error: Instance at {url} is not responding properly"
 
-        # Try to get project info
         project_info = {"url": url}
 
         try:
-            # Try the root endpoint first
             root_url = f"{url}/"
             root_response = requests.get(root_url, timeout=1.5)  # Short timeout for root
 
@@ -225,7 +222,6 @@ def register_instance(port: int, url: str = None) -> str:
                 try:
                     root_data = root_response.json()
 
-                    # Extract basic information from root
                     if "project" in root_data and root_data["project"]:
                         project_info["project"] = root_data["project"]
                     if "file" in root_data and root_data["file"]:
@@ -234,7 +230,6 @@ def register_instance(port: int, url: str = None) -> str:
                 except Exception as e:
                     print(f"Error parsing root info: {e}", file=sys.stderr)
 
-            # If we don't have project info yet, try the /info endpoint as a fallback
             if not project_info.get("project") and not project_info.get("file"):
                 info_url = f"{url}/info"
 
@@ -243,11 +238,9 @@ def register_instance(port: int, url: str = None) -> str:
                     if info_response.ok:
                         try:
                             info_data = info_response.json()
-                            # Extract relevant information
                             if "project" in info_data and info_data["project"]:
                                 project_info["project"] = info_data["project"]
 
-                            # Handle file information
                             file_info = info_data.get("file", {})
                             if isinstance(file_info, dict) and file_info.get("name"):
                                 project_info["file"] = file_info.get("name", "")
@@ -272,7 +265,14 @@ def register_instance(port: int, url: str = None) -> str:
 
 @mcp.tool()
 def unregister_instance(port: int) -> str:
-    """Unregister a Ghidra instance"""
+    """Unregister a Ghidra instance
+    
+    Args:
+        port: Port number of the instance to unregister
+        
+    Returns:
+        str: Confirmation message or error
+    """
     with instances_lock:
         if port in active_instances:
             del active_instances[port]
@@ -280,11 +280,14 @@ def unregister_instance(port: int) -> str:
         return f"No instance found on port {port}"
 
 @mcp.tool()
-def discover_instances(host: str = None) -> dict:
+def discover_instances(host: str = null) -> dict:
-    """Auto-discover Ghidra instances by scanning ports (quick discovery with limited range)
+    """Discover available Ghidra instances by scanning ports
     
     Args:
-        host: Optional host to scan (defaults to configured ghidra_host)
+        host: Optional host to scan (default: configured ghidra_host)
+        
+    Returns:
+        dict: Contains 'found' count and 'instances' list with discovery results
     """
     return _discover_instances(QUICK_DISCOVERY_RANGE, host=host, timeout=0.5)
 
@@ -300,7 +303,7 @@ def _discover_instances(port_range, host=None, timeout=0.5) -> dict:
         url = f"http://{scan_host}:{port}"
         try:
             test_url = f"{url}/instances"
-            response = requests.get(test_url, timeout=timeout)  # Short timeout for scanning
+            response = requests.get(test_url, timeout=timeout)
             if response.ok:
                 result = register_instance(port, url)
                 found_instances.append({"port": port, "url": url, "result": result})
@@ -315,36 +318,45 @@ def _discover_instances(port_range, host=None, timeout=0.5) -> dict:
 
 @mcp.tool()
 def list_functions(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all functions in the current program
+    """List functions in the current program with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of segments to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of strings with function names and addresses
+        list: Function names and addresses
     """
     return safe_get(port, "functions", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def list_classes(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all classes with pagination"""
+    """List classes in the current program with pagination
+    
+    Args:
+        port: Ghidra instance port (default: 8192)
+        offset: Pagination offset (default: 0)
+        limit: Maximum items to return (default: 100)
+        
+    Returns:
+        list: Class names and info
+    """
     return safe_get(port, "classes", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def get_function(port: int = DEFAULT_GHIDRA_PORT, name: str = "", cCode: bool = True, syntaxTree: bool = False, simplificationStyle: str = "normalize") -> dict:
-    """Get decompiled code for a specific function
+    """Get decompiled code for a function
     
     Args:
         port: Ghidra instance port (default: 8192)
-        name: Name of the function to decompile
+        name: Function name to decompile
-        cCode: Whether to output C code (default: True)
+        cCode: Return C-style code (default: True)
-        syntaxTree: Whether to include syntax tree (default: False)
+        syntaxTree: Include syntax tree (default: False)
-        simplificationStyle: Decompiler analysis style (default: "normalize")
+        simplificationStyle: Decompiler style (default: "normalize")
         
     Returns:
-        Dict containing function details including decompiled code
+        dict: Contains function name, address, signature and decompilation
     """
     response = safe_get(port, f"functions/{quote(name)}", {
         "cCode": str(cCode).lower(),
@@ -352,124 +364,125 @@ def get_function(port: int = DEFAULT_GHIDRA_PORT, name: str = "", cCode: bool =
         "simplificationStyle": simplificationStyle
     })
     
-    # Check if the response is a string (old format) or already a dict with proper structure
+    if not isinstance(response, dict) or "success" not in response:
-    if isinstance(response, dict) and "success" in response:
-        # If it's already a properly structured response, return it
-        return response
-    elif isinstance(response, str):
-        # If it's a string (old format), wrap it in a proper structure
-        return {
-            "success": True,
-            "result": {
-                "name": name,
-                "address": "",  # We don't have the address here
-                "signature": "",  # We don't have the signature here
-                "decompilation": response
-            },
-            "timestamp": int(time.time() * 1000),
-            "port": port
-        }
-    else:
-        # Unexpected format, return an error
         return {
             "success": False,
-            "error": "Unexpected response format from Ghidra plugin",
+            "error": "Invalid response format from Ghidra plugin",
             "timestamp": int(time.time() * 1000),
             "port": port
         }
+    return response
 
 @mcp.tool()
 def update_function(port: int = DEFAULT_GHIDRA_PORT, name: str = "", new_name: str = "") -> str:
-    """Rename a function (Modify -> POST)"""
+    """Rename a function
+    
+    Args:
+        port: Ghidra instance port (default: 8192)
+        name: Current function name
+        new_name: New function name
+        
+    Returns:
+        str: Confirmation message or error
+    """
     return safe_post(port, f"functions/{quote(name)}", {"newName": new_name})
 
 @mcp.tool()
 def update_data(port: int = DEFAULT_GHIDRA_PORT, address: str = "", new_name: str = "") -> str:
-    """Rename data at specified address (Modify -> POST)"""
+    """Rename data at a memory address
+    
+    Args:
+        port: Ghidra instance port (default: 8192)
+        address: Memory address in hex format
+        new_name: New name for the data
+        
+    Returns:
+        str: Confirmation message or error
+    """
     return safe_post(port, "data", {"address": address, "newName": new_name})
 
 @mcp.tool()
 def list_segments(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all memory segments in the current program with pagination
+    """List memory segments with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of segments to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of segment information strings
+        list: Segment information strings
     """
     return safe_get(port, "segments", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def list_imports(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all imported symbols with pagination
+    """List imported symbols with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of imports to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of import information strings
+        list: Imported symbol information
     """
     return safe_get(port, "symbols/imports", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def list_exports(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all exported symbols with pagination
+    """List exported symbols with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of exports to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of export information strings
+        list: Exported symbol information
     """
     return safe_get(port, "symbols/exports", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def list_namespaces(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all namespaces in the current program with pagination
+    """List namespaces with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of namespaces to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of namespace information strings
+        list: Namespace information strings
     """
     return safe_get(port, "namespaces", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def list_data_items(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int = 100) -> list:
-    """List all defined data items with pagination
+    """List data items with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of data items to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of data item information strings
+        list: Data item information strings
     """
     return safe_get(port, "data", {"offset": offset, "limit": limit})
 
 @mcp.tool()
 def search_functions_by_name(port: int = DEFAULT_GHIDRA_PORT, query: str = "", offset: int = 0, limit: int = 100) -> list:
-    """Search for functions by name with pagination
+    """Search functions by name with pagination
     
     Args:
         port: Ghidra instance port (default: 8192)
-        query: Search string to match against function names
+        query: Search string for function names
         offset: Pagination offset (default: 0)
-        limit: Maximum number of functions to return (default: 100)
+        limit: Maximum items to return (default: 100)
         
     Returns:
-        List of matching function information strings or error message if query is empty
+        list: Matching function info or error if query empty
     """
     if not query:
         return ["Error: query string is required"]
@@ -477,23 +490,20 @@ def search_functions_by_name(port: int = DEFAULT_GHIDRA_PORT, query: str = "", o
 
 @mcp.tool()
 def get_function_by_address(port: int = DEFAULT_GHIDRA_PORT, address: str = "") -> dict:
-    """Get function details by its memory address
+    """Get function details by memory address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        address: Memory address of the function (hex string)
+        address: Memory address in hex format
         
     Returns:
-        Dict containing function details including name, address, signature, and decompilation
+        dict: Contains function name, address, signature and decompilation
     """
     response = safe_get(port, "get_function_by_address", {"address": address})
     
-    # Check if the response is a string (old format) or already a dict with proper structure
     if isinstance(response, dict) and "success" in response:
-        # If it's already a properly structured response, return it
         return response
     elif isinstance(response, str):
-        # If it's a string (old format), wrap it in a proper structure
         return {
             "success": True,
             "result": {
@@ -504,7 +514,6 @@ def get_function_by_address(port: int = DEFAULT_GHIDRA_PORT, address: str = "")
             "port": port
         }
     else:
-        # Unexpected format, return an error
         return {
             "success": False,
             "error": "Unexpected response format from Ghidra plugin",
@@ -513,44 +522,42 @@ def get_function_by_address(port: int = DEFAULT_GHIDRA_PORT, address: str = "")
         }
 
 @mcp.tool()
-def get_current_address(port: int = DEFAULT_GHIDRA_PORT) -> dict: # Return dict
+def get_current_address(port: int = DEFAULT_GHIDRA_PORT) -> dict:
-    """Get the address currently selected in Ghidra's UI
+    """Get currently selected address in Ghidra UI
     
     Args:
         port: Ghidra instance port (default: 8192)
         
     Returns:
-        Dict containing the current memory address (hex format)
+        dict: Contains current memory address in hex format
     """
-    # Directly return the dictionary from safe_get
     return safe_get(port, "get_current_address")
 
 @mcp.tool()
-def get_current_function(port: int = DEFAULT_GHIDRA_PORT) -> dict: # Return dict
+def get_current_function(port: int = DEFAULT_GHIDRA_PORT) -> dict:
-    """Get the function currently selected in Ghidra's UI
+    """Get currently selected function in Ghidra UI
     
     Args:
         port: Ghidra instance port (default: 8192)
         
     Returns:
-        Dict containing function details including name, address, and signature
+        dict: Contains function name, address and signature
     """
-    # Directly return the dictionary from safe_get
     return safe_get(port, "get_current_function")
 
 @mcp.tool()
 def decompile_function_by_address(port: int = DEFAULT_GHIDRA_PORT, address: str = "", cCode: bool = True, syntaxTree: bool = False, simplificationStyle: str = "normalize") -> dict:
-    """Decompile a function at a specific memory address
+    """Decompile function at memory address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        address: Memory address of the function (hex string)
+        address: Memory address in hex format
-        cCode: Whether to output C code (default: True)
+        cCode: Return C-style code (default: True)
-        syntaxTree: Whether to include syntax tree (default: False)
+        syntaxTree: Include syntax tree (default: False)
-        simplificationStyle: Decompiler analysis style (default: "normalize")
+        simplificationStyle: Decompiler style (default: "normalize")
         
     Returns:
-        Dict containing the decompiled pseudocode in the 'result.decompilation' field
+        dict: Contains decompiled code in 'result.decompilation'
     """
     response = safe_get(port, "decompile_function", {
         "address": address,
@@ -559,125 +566,111 @@ def decompile_function_by_address(port: int = DEFAULT_GHIDRA_PORT, address: str
         "simplificationStyle": simplificationStyle
     })
     
-    # Check if the response is a string (old format) or already a dict with proper structure
+    if not isinstance(response, dict) or "success" not in response:
-    if isinstance(response, dict) and "success" in response:
-        # If it's already a properly structured response, return it
-        return response
-    elif isinstance(response, str):
-        # If it's a string (old format), wrap it in a proper structure
-        return {
-            "success": True,
-            "result": {
-                "decompilation": response
-            },
-            "timestamp": int(time.time() * 1000),
-            "port": port
-        }
-    else:
-        # Unexpected format, return an error
         return {
             "success": False,
-            "error": "Unexpected response format from Ghidra plugin",
+            "error": "Invalid response format from Ghidra plugin",
             "timestamp": int(time.time() * 1000),
             "port": port
         }
+    return response
 
 @mcp.tool()
-def disassemble_function(port: int = DEFAULT_GHIDRA_PORT, address: str = "") -> dict: # Return dict
+def disassemble_function(port: int = DEFAULT_GHIDRA_PORT, address: str = "") -> dict:
-    """Get disassembly for a function at a specific address
+    """Get disassembly for function at address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        address: Memory address of the function (hex string)
+        address: Memory address in hex format
         
     Returns:
-        List of strings showing assembly instructions with addresses and comments
+        dict: Contains assembly instructions with addresses and comments
     """
     return safe_get(port, "disassemble_function", {"address": address})
 
 @mcp.tool()
 def set_decompiler_comment(port: int = DEFAULT_GHIDRA_PORT, address: str = "", comment: str = "") -> str:
-    """Add/edit a comment in the decompiler view at a specific address
+    """Add/edit decompiler comment at address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        address: Memory address to place comment (hex string)
+        address: Memory address in hex format
-        comment: Text of the comment to add
+        comment: Comment text to add
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "set_decompiler_comment", {"address": address, "comment": comment})
 
 @mcp.tool()
 def set_disassembly_comment(port: int = DEFAULT_GHIDRA_PORT, address: str = "", comment: str = "") -> str:
-    """Add/edit a comment in the disassembly view at a specific address
+    """Add/edit disassembly comment at address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        address: Memory address to place comment (hex string)
+        address: Memory address in hex format
-        comment: Text of the comment to add
+        comment: Comment text to add
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "set_disassembly_comment", {"address": address, "comment": comment})
 
 @mcp.tool()
 def rename_local_variable(port: int = DEFAULT_GHIDRA_PORT, function_address: str = "", old_name: str = "", new_name: str = "") -> str:
-    """Rename a local variable within a function
+    """Rename local variable in function
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function_address: Memory address of the function (hex string)
+        function_address: Function memory address in hex
-        old_name: Current name of the variable
+        old_name: Current variable name
-        new_name: New name for the variable
+        new_name: New variable name
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "rename_local_variable", {"functionAddress": function_address, "oldName": old_name, "newName": new_name})
 
 @mcp.tool()
 def rename_function_by_address(port: int = DEFAULT_GHIDRA_PORT, function_address: str = "", new_name: str = "") -> str:
-    """Rename a function at a specific memory address
+    """Rename function at memory address
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function_address: Memory address of the function (hex string)
+        function_address: Function memory address in hex
-        new_name: New name for the function
+        new_name: New function name
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "rename_function_by_address", {"functionAddress": function_address, "newName": new_name})
 
 @mcp.tool()
 def set_function_prototype(port: int = DEFAULT_GHIDRA_PORT, function_address: str = "", prototype: str = "") -> str:
-    """Update a function's signature/prototype
+    """Update function signature/prototype
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function_address: Memory address of the function (hex string)
+        function_address: Function memory address in hex
-        prototype: New function prototype string (e.g. "int func(int param1)")
+        prototype: New prototype string (e.g. "int func(int param1)")
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "set_function_prototype", {"functionAddress": function_address, "prototype": prototype})
 
 @mcp.tool()
 def set_local_variable_type(port: int = DEFAULT_GHIDRA_PORT, function_address: str = "", variable_name: str = "", new_type: str = "") -> str:
-    """Change the data type of a local variable in a function
+    """Change local variable data type
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function_address: Memory address of the function (hex string)
+        function_address: Function memory address in hex
-        variable_name: Name of the variable to modify
+        variable_name: Variable name to modify
-        new_type: New data type for the variable (e.g. "int", "char*")
+        new_type: New data type (e.g. "int", "char*")
         
     Returns:
-        Confirmation message or error if failed
+        str: Confirmation message or error
     """
     return safe_post(port, "set_local_variable_type", {"functionAddress": function_address, "variableName": variable_name, "newType": new_type})
 
@@ -688,11 +681,11 @@ def list_variables(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int
     Args:
         port: Ghidra instance port (default: 8192)
         offset: Pagination offset (default: 0)
-        limit: Maximum number of variables to return (default: 100)
+        limit: Maximum items to return (default: 100)
-        search: Optional search string to filter variables by name
+        search: Optional filter for variable names
         
     Returns:
-        Dict containing the list of variables in the 'result' field
+        dict: Contains variables list in 'result' field
     """
     params = {"offset": offset, "limit": limit}
     if search:
@@ -700,73 +693,25 @@ def list_variables(port: int = DEFAULT_GHIDRA_PORT, offset: int = 0, limit: int
     
     response = safe_get(port, "variables", params)
     
-    # Check if the response is a string (old format) or already a dict with proper structure
+    if not isinstance(response, dict) or "success" not in response:
-    if isinstance(response, dict) and "success" in response:
-        # If it's already a properly structured response, return it
-        return response
-    elif isinstance(response, str):
-        # If it's a string (old format), parse it and wrap it in a proper structure
-        # For empty response, return empty list
-        if not response.strip():
-            return {
-                "success": True,
-                "result": [],
-                "timestamp": int(time.time() * 1000),
-                "port": port
-            }
-        
-        # Parse the string to extract variables
-        variables = []
-        lines = response.strip().split('\n')
-        
-        for line in lines:
-            line = line.strip()
-            if line:
-                # Try to parse variable line
-                parts = line.split(':')
-                if len(parts) >= 2:
-                    var_name = parts[0].strip()
-                    var_type = ':'.join(parts[1:]).strip()
-                    
-                    # Extract address if present
-                    address = ""
-                    if '@' in var_type:
-                        type_parts = var_type.split('@')
-                        var_type = type_parts[0].strip()
-                        address = type_parts[1].strip()
-                    
-                    variables.append({
-                        "name": var_name,
-                        "dataType": var_type,
-                        "address": address
-                    })
-        
-        # Return structured response
-        return {
-            "success": True,
-            "result": variables,
-            "timestamp": int(time.time() * 1000),
-            "port": port
-        }
-    else:
-        # Unexpected format, return an error
         return {
             "success": False,
-            "error": "Unexpected response format from Ghidra plugin",
+            "error": "Invalid response format from Ghidra plugin",
             "timestamp": int(time.time() * 1000),
             "port": port
         }
+    return response
 
 @mcp.tool()
 def list_function_variables(port: int = DEFAULT_GHIDRA_PORT, function: str = "") -> dict:
-    """List variables in a specific function
+    """List variables in function
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function: Name of the function to list variables for
+        function: Function name to list variables for
         
     Returns:
-        Dict containing the function variables in the 'result.variables' field
+        dict: Contains variables list in 'result.variables'
     """
     if not function:
         return {"success": False, "error": "Function name is required"}
@@ -774,83 +719,27 @@ def list_function_variables(port: int = DEFAULT_GHIDRA_PORT, function: str = "")
     encoded_name = quote(function)
     response = safe_get(port, f"functions/{encoded_name}/variables", {})
     
-    # Check if the response is a string (old format) or already a dict with proper structure
+    if not isinstance(response, dict) or "success" not in response:
-    if isinstance(response, dict) and "success" in response:
-        # If it's already a properly structured response, return it
-        return response
-    elif isinstance(response, str):
-        # If it's a string (old format), parse it and wrap it in a proper structure
-        # Example string format: "Function: init_peripherals\n\nParameters:\n  none\n\nLocal Variables:\n  powArrThree: undefined * @ 08000230\n  pvartwo: undefined * @ 08000212\n  pvarEins: undefined * @ 08000206\n"
-        
-        # Parse the string to extract variables
-        variables = []
-        lines = response.strip().split('\n')
-        
-        # Extract function name from first line if possible
-        function_name = function
-        if lines and lines[0].startswith("Function:"):
-            function_name = lines[0].replace("Function:", "").strip()
-        
-        # Look for local variables section
-        in_local_vars = False
-        for line in lines:
-            line = line.strip()
-            if line == "Local Variables:":
-                in_local_vars = True
-                continue
-            
-            if in_local_vars and line and not line.startswith("Function:") and not line.startswith("Parameters:"):
-                # Parse variable line: "  varName: type @ address"
-                parts = line.strip().split(':')
-                if len(parts) >= 2:
-                    var_name = parts[0].strip()
-                    var_type = ':'.join(parts[1:]).strip()
-                    
-                    # Extract address if present
-                    address = ""
-                    if '@' in var_type:
-                        type_parts = var_type.split('@')
-                        var_type = type_parts[0].strip()
-                        address = type_parts[1].strip()
-                    
-                    variables.append({
-                        "name": var_name,
-                        "dataType": var_type,
-                        "address": address,
-                        "type": "local"
-                    })
-        
-        # Return structured response
-        return {
-            "success": True,
-            "result": {
-                "function": function_name,
-                "variables": variables
-            },
-            "timestamp": int(time.time() * 1000),
-            "port": port
-        }
-    else:
-        # Unexpected format, return an error
         return {
             "success": False,
-            "error": "Unexpected response format from Ghidra plugin",
+            "error": "Invalid response format from Ghidra plugin",
             "timestamp": int(time.time() * 1000),
             "port": port
         }
+    return response
 
 @mcp.tool()
 def rename_variable(port: int = DEFAULT_GHIDRA_PORT, function: str = "", name: str = "", new_name: str = "") -> dict:
-    """Rename a variable in a function
+    """Rename variable in function
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function: Name of the function containing the variable
+        function: Function name containing variable
-        name: Current name of the variable
+        name: Current variable name
-        new_name: New name for the variable
+        new_name: New variable name
         
     Returns:
-        Dict containing the result of the operation
+        dict: Operation result
     """
     if not function or not name or not new_name:
         return {"success": False, "error": "Function, name, and new_name parameters are required"}
@@ -861,16 +750,16 @@ def rename_variable(port: int = DEFAULT_GHIDRA_PORT, function: str = "", name: s
 
 @mcp.tool()
 def retype_variable(port: int = DEFAULT_GHIDRA_PORT, function: str = "", name: str = "", data_type: str = "") -> dict:
-    """Change the data type of a variable in a function
+    """Change variable data type in function
     
     Args:
         port: Ghidra instance port (default: 8192)
-        function: Name of the function containing the variable
+        function: Function name containing variable
-        name: Current name of the variable
+        name: Variable name to modify
-        data_type: New data type for the variable
+        data_type: New data type
         
     Returns:
-        Dict containing the result of the operation
+        dict: Operation result
     """
     if not function or not name or not data_type:
         return {"success": False, "error": "Function, name, and data_type parameters are required"}
@@ -886,10 +775,8 @@ def periodic_discovery():
     """Periodically discover new instances"""
     while True:
         try:
-            # Use the full discovery range
             _discover_instances(FULL_DISCOVERY_RANGE, timeout=0.5)
 
-            # Also check if any existing instances are down
             with instances_lock:
                 ports_to_remove = []
                 for port, info in active_instances.items():
@@ -901,24 +788,19 @@ def periodic_discovery():
                     except requests.exceptions.RequestException:
                         ports_to_remove.append(port)
 
-                # Remove any instances that are down
                 for port in ports_to_remove:
                     del active_instances[port]
                     print(f"Removed unreachable instance on port {port}")
         except Exception as e:
             print(f"Error in periodic discovery: {e}")
 
-        # Sleep for 30 seconds before next scan
         time.sleep(30)
 
 if __name__ == "__main__":
-    # Auto-register default instance
     register_instance(DEFAULT_GHIDRA_PORT, f"http://{ghidra_host}:{DEFAULT_GHIDRA_PORT}")
 
-    # Auto-discover other instances
     discover_instances()
 
-    # Start periodic discovery in background thread
     discovery_thread = threading.Thread(
         target=periodic_discovery,
         daemon=True,