doobidoo/mcp-memory-service v6.20.1

v6.20.1: Critical SQLite-vec Backend Regression Fix

on GitHub

🐛 Critical Bug Fixes

SQLite-vec Backend Regression Fix

This release fixes multiple critical issues that completely prevented the sqlite_vec backend (default) from working with the MCP server.

What was broken:

• ❌ Class name mismatch: Code tried to import non-existent SqliteVecStorage instead of SqliteVecMemoryStorage
• ❌ Wrong constructor parameters: Used embedding_manager=None instead of correct embedding_model parameter
• ❌ Wrong database path: Used ChromaDB path instead of SQLITE_VEC_PATH
• ❌ Missing imports: SQLITE_VEC_PATH and EMBEDDING_MODEL_NAME not imported

What's fixed:

• ✅ Fixed class import: SqliteVecStorage → SqliteVecMemoryStorage in get_storage_backend()
• ✅ Fixed constructor: Use correct db_path and embedding_model parameters
• ✅ Fixed database path: Use SQLITE_VEC_PATH instead of hardcoded ChromaDB path
• ✅ Added missing imports from config
• ✅ Code quality: Added _get_sqlite_vec_storage() helper function to reduce duplication

Impact:

• Restores Default Backend: sqlite_vec backend now works correctly with MCP server
• Fixes Memory Operations: Resolves "No embedding model available" errors
• Claude Desktop Integration: Enables proper memory storage and retrieval
• Embedding Support: Ensures embedding model loads and generates embeddings successfully

Thanks

Special thanks to @ergut for identifying and comprehensively fixing this critical regression that was preventing the default backend from functioning.

Full Changelog: v6.20.0...v6.20.1