Release 2026.10.01.2: instrumentation imports without the database extras

CHANGELOG.md

@@ -5,6 +5,34 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Calendar Versioning](https://calver.org/) (YYYY.MM.DD).
 
+## [2026.10.01.2] - 2026-10-01
+
+The instrumentation imports on a base install, without the database extras.
+
+### Fixed
+- `import fastmcp_feedback.instrumentation` failed on `pip install
+  fastmcp-feedback` without the `instrumentation` extra: the package imported
+  `storage.py` eagerly, which imports `sqlalchemy.ext.asyncio`, and SQLAlchemy
+  2.1 raises `ImportError` there when `greenlet` is missing. `instrument(app)`
+  with `JsonLinesSink`, `CallbackSink` or `MemorySink`, events, redaction and
+  result classification now need only the base dependencies.
+- `DatabaseSink`, `EmbeddingVector`, `build_metadata`, `Embedder`,
+  `EmbeddingSink`, `EmbeddingText`, `OpenAIEmbedder`, `extract_texts`,
+  `backfill_embeddings` and `backfill_feedback` load on first access. Without
+  the extra, accessing one raises `ImportError` naming the missing package and
+  the extra to install (`[instrumentation]`, or `[instrumentation,embeddings]`
+  for the embedding names), chained to the original error. Every access
+  raises, not only the first, although SQLAlchemy itself reports a missing
+  `greenlet` only once. Import paths are unchanged.
+- The middleware finds a `DatabaseSink` or `EmbeddingSink` among its sinks
+  without importing their modules, so `database_sink`, `embedding_sink`,
+  `capture_recent_calls`, `link_feedback`, `feedback_context`, `events_for`,
+  `similar` and `similar_feedback` return their usual empty results on a base
+  install.
+- `DEFAULT_TABLE_PREFIX`, `DEFAULT_EMBEDDING_DIM`, `EMBEDDING_SOURCES` and
+  `DEFAULT_EVENT_TEXT_KEYS` moved to `instrumentation/constants.py` and import
+  without the extras; `storage` and `embeddings` still export them.
+
 ## [2026.10.01.1] - 2026-10-01
 
 A result that says it succeeded is no longer flagged for its own error string.

README.md

@@ -30,6 +30,20 @@ pip install fastmcp-feedback
 uv add "fastmcp-feedback[postgresql]"
 ```
 
+What each install covers:
+
+| Install | Adds | Covers |
+|---------|------|--------|
+| `fastmcp-feedback` | FastMCP, SQLAlchemy, Pydantic | The feedback tools (sync SQLAlchemy, no greenlet), and `instrument(app)` with `JsonLinesSink`, `CallbackSink` and `MemorySink`, events, redaction and result classification |
+| `fastmcp-feedback[instrumentation]` | `sqlalchemy[asyncio]` (greenlet), `aiosqlite` | `DatabaseSink`, `build_metadata`, call history for linking feedback (`capture_recent_calls` across workers, `link_feedback`, `feedback_context`) |
+| `fastmcp-feedback[instrumentation,embeddings]` | `pgvector` | `EmbeddingSink`, `OpenAIEmbedder`, `similar()`, the backfill helpers; pgvector is only needed on PostgreSQL |
+
+Postgres hosts add `asyncpg` for the async sinks. Without the
+`instrumentation` extra, `from fastmcp_feedback.instrumentation import
+DatabaseSink` raises an `ImportError` that names the missing package and the
+extra to install, and the middleware's database helpers return their empty
+defaults (`[]`, `False`).
+
 ### From Git (Latest Development)
 
 ```bash
@@ -181,8 +195,7 @@ instrument(app, [
 
 `DatabaseSink` needs the `instrumentation` extra
 (`uv add "fastmcp-feedback[instrumentation]"`), plus `asyncpg` for Postgres.
-Install the extra even if you already have SQLAlchemy: SQLAlchemy 2.1 no longer
-pulls in `greenlet` by itself, and its async engine cannot run without it.
+The other sinks work on the base install (see [Installation](#installation)).
 
 ### Using your own database and migrations
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "fastmcp-feedback"
-version = "2026.10.01.1"  # YYYYMMDD.patch versioning - update for each release
+version = "2026.10.01.2"  # YYYYMMDD.patch versioning - update for each release
 description = "Production-ready feedback collection system for FastMCP servers"
 readme = "README.md"
 license = "MIT"

src/fastmcp_feedback/__init__.py

@@ -44,7 +44,7 @@ Quick Start:
 import logging
 
 # Version information - CalVer YYYY.MM.DD
-__version__ = "2026.10.01.1"
+__version__ = "2026.10.01.2"
 __author__ = "Ryan Malloy"
 __email__ = "ryan@supported.systems"
 

uv.lock

@@ -601,7 +601,7 @@ wheels = [
 
 [[package]]
 name = "fastmcp-feedback"
-version = "2026.10.1.1"
+version = "2026.10.1.2"
 source = { editable = "." }
 dependencies = [
     { name = "fastmcp" },