willow-mcp is an agent-neutral MCP server providing persistent memory and task execution through three storage backends: a local SQLite key/value store, a Postgres knowledge base, and a sandboxed task queue.

SQLite Store (SOIL) Operations:

• store_put — Write a JSON record to a named collection

• store_get — Retrieve a specific record by ID

• store_list — List all records within a collection

• store_update — Modify an existing record

• store_search — Multi-keyword AND search within a collection

• store_search_all — Search across all collections simultaneously

• store_delete — Soft-delete a record by ID

Postgres Knowledge Base Operations:

• knowledge_ingest — Add a knowledge atom (with optional tags, domain, and source)

• knowledge_search — Multi-keyword search, optionally filtered by domain

Task Queue (Kart) Operations:

• task_submit — Submit a shell command or script to a sandboxed execution queue

• task_status — Check the status of a submitted task by ID

• task_list — List all pending tasks

Authorization: Every tool call is gated via SAP/1.0 filesystem-based identity checking (open mode if openclaw-sap-gate is not installed). Compatible with Claude Code, Claude Desktop, Cursor, or any stdio MCP client.

Enforces SAP/1.0 authorization on every tool call, requiring app_id validation through SAFE folder configuration and PGP signature verification.

Provides SQLite key/value store operations including reading, writing, listing, searching, and deleting data atoms across collections.

1. Click on "Install Server".

2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.

3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@willow-mcp store the user preferences for app 'notes' with key 'theme' as 'dark'"

That's it! The server will respond to your query, and you can continue using it as needed.

Here is a step-by-step guide with screenshots.