@crediolabs/policy-builder-mcp

An MCP server for the OZ Policy Builder. It registers the nine tools of @crediolabs/policy-synth exactly as that package defines them (record_transaction, synthesize_policy, simulate_policy, verify_policy, install_policy, revoke_policy, bind_policy, get_interpreter_info, review_unsigned): name, description and input schema come from its table, and so does every answer. A result is the tool's data as JSON text and as structuredContent; a refusal sets isError and carries the error envelope (code, message, retryable).

Run

Register the published package at version 5.2.0:

{ "mcpServers": { "policy-builder": {
  "command": "npx", "args": ["-y", "@crediolabs/[email protected]"] } } }

From a checkout of the repository, build policy-synth and this package (bun run --cwd packages/<name> build) and point the client at packages/policy-builder-mcp/dist/bin/server.js with node.

policy-builder-mcp serves stdio. policy-builder-mcp --http [--http-port N] serves stateless Streamable HTTP at POST /mcp on loopback; the surface has no authentication, so a non-loopback host is refused unless the embedding code passes allowExternalHost (startHttpServer).

The server holds no key material: install and revoke return unsigned XDR for a wallet to sign. See the agent manual for which tool to call for which intent, and the policy-synth README for the limits, the install guardrails and the operator's environment variables.

License

MIT