After 3 hours of debugging, we discovered the slos-api bridge was unnecessary complexity. Direct MCP connection to ChromaDB is 10-20x faster!
Added chroma-mcp to claude_desktop_config.json
Result: "Could not attach to MCP server chroma"
Tried python -m chroma_mcp, discovered Claude uses different Python
Finding: Claude's venv vs System Python conflict
Located chroma-mcp.exe in PythonSoftwareFoundation path
Path: C:\Users\ourpr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\Scripts\
Used full path to chroma-mcp.exe in config
Result: ✅ CONNECTED!
{
"mcpServers": {
"desktop-commander": {
"command": "npx",
"args": [
"-y",
"@wonderwhy-er/desktop-commander@latest"
]
},
"chroma": {
"command": "C:\\Users\\ourpr\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\\LocalCache\\local-packages\\Python313\\Scripts\\chroma-mcp.exe",
"args": [
"--client-type",
"http",
"--host",
"localhost",
"--port",
"8000",
"--ssl",
"false"
]
}
}
}
# Only what's actually needed and working: services: redis: image: redis:alpine container_name: slos-redis ports: ["6379:6379"] volumes: ["./data/redis:/data"] chromadb: image: chromadb/chroma container_name: slos-chroma ports: ["8000:8000"] volumes: ["./data/chroma:/data"] # slos-api removed - unnecessary complexity!
Available Collections (via ChromaDB MCP):
┌──────────────────────┬──────────┬────────────────────────────┐
│ Collection │ Docs │ Purpose │
├──────────────────────┼──────────┼────────────────────────────┤
│ patterns │ 17+ │ Core semantic patterns │
│ breakthroughs │ 5+ │ Key discoveries │
│ work_done │ 1+ │ Completed tasks │
│ emergence │ 0 │ Emergent patterns │
│ relationships │ 0 │ Relational patterns │
│ processes │ 1+ │ Process documentation │
│ knowledge │ 1+ │ General knowledge base │
└──────────────────────┴──────────┴────────────────────────────┘
# Old way (slow): docker exec slos-chroma python -c "..." # 5000ms+ # New way (fast): chroma:chroma_query_documents(...) # 100ms!
No more careful file operations or path management. Just direct semantic queries:
Every interaction now builds on the semantic surface:
cd C:\Users\ourpr\OneDrive\Desktop\SLOS-PERSISTENT docker-compose up -d # Verify: slos-chroma on 8000, slos-redis on 6379
# In Claude, the tools should be available: chroma:chroma_list_collections() # Should return: patterns, breakthroughs, etc.
# Check the executable exists: dir C:\Users\ourpr\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.13_qbz5n2kfra8p0\LocalCache\local-packages\Python313\Scripts\chroma* # Restart Claude Desktop completely (kill all processes) # The error "Could not attach" might be from other MCP extensions
It was failing to connect to ChromaDB internally and causing port conflicts. Removing it simplified everything.
Claude uses its own venv, system Python has packages installed elsewhere. Full paths solve this.
Errors about "Could not attach" might be from OTHER extensions (Figma, Chrome Control, etc.), not your configured servers.
ChromaDB MCP → HTTP → Docker is simpler and faster than any bridge layer we tried to build.