Which integrations are available for this server?

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.

How do I use willow-mcp?

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.

willow-mcp

Agent-neutral MCP server. SQLite key/value store, Postgres knowledge base, Kart task queue. SAP/1.0 authorization on every tool call.

pip install willow-mcp

Tools

Tool	Description
`store_put`	Write to SQLite store
`store_get`	Read from SQLite store
`store_list`	List atoms in a collection
`store_search`	Full-text search in a collection
`store_delete`	Delete an atom
`store_search_all`	Search across all collections
`knowledge_ingest`	Add to Postgres knowledge base
`knowledge_search`	Search Postgres knowledge base
`task_submit`	Submit task to Kart queue
`task_status`	Check task status
`task_list`	List pending tasks

Every tool requires an app_id param. Authorization is checked via SAP/1.0.

OpenClaw config

{
  "mcp": {
    "servers": {
      "willow": {
        "command": "python3",
        "args": ["-m", "willow_mcp"],
        "env": {
          "WILLOW_PG_DB": "willow",
          "SAP_SAFE_ROOT": "~/.sap/Applications",
          "SAP_PGP_FINGERPRINT": "YOUR_KEY_FINGERPRINT"
        }
      }
    }
  }
}

Configuration

Env var	Default	Description
`WILLOW_PG_DB`	`willow`	Postgres database name
`WILLOW_PG_USER`	`$USER`	Postgres user (Unix socket auth)
`WILLOW_STORE_ROOT`	`~/.willow/store`	SQLite store directory
`SAP_SAFE_ROOT`	`~/.sap/Applications`	SAFE folder root
`SAP_PGP_FINGERPRINT`	(empty)	Pinned GPG fingerprint

Authorization

Uses openclaw-sap-gate (SAP/1.0). Set up a SAFE folder for each app_id:

sap-gate init my-app
# edit ~/.sap/Applications/my-app/safe-app-manifest.json
# sign it, then:
sap-gate verify my-app

License

MIT — Sean Campbell 2026

Install Server

A

security – no known vulnerabilities

A

license - permissive license

B

quality - B tier

How are these scores calculated?

Resources

GitHub Repository

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