Reads are free with no key. Results are provided as-is, without warranty; verify before acting, especially for tools with send, spend or delete side effects. Data license: our derived fields (scores, health, inferred effects) are CC BY 4.0 with attribution "Toolwork (toolwork.org)"; upstream CC0 data stays CC0; Docker catalog entries are MIT. The Agent Tool Card schema is CC0. Fair use: keep automated traffic reasonable; write endpoints are rate-limited.