# MCP Tool Descriptor Lint

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Lint a supplied MCP tool descriptor for a bounded naming profile, description quality, object-root input/output schemas and typed annotation hints. Unsupported schemas produce explicit findings. Annotations are untrusted hints; this is neither full MCP protocol validation nor a security decision.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Review tool descriptors before adding them to an agent catalogue
- Identify schema limitations and untrusted annotation hints

## Outside this profile
- MCP transport/protocol conformance certification
- Trusting readOnlyHint as an authorization guarantee

Proposed nominal USD 0.01 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/mcp-tool-lint.json)
- [Input schema](/reference/schemas/mcp-tool-lint.input.json)
- [Output schema](/reference/schemas/mcp-tool-lint.output.json)
- [Fixed example](/reference/examples/mcp-tool-lint.json)
- [Complete HTML reference](/discover/tools/mcp-tool-lint)