OpenAPI

OpenAPI spec quality checklist

Better specs produce better agent tools. Clear operation ids, parameter descriptions, auth schemes, examples, and response schemas help Astrail generate safer MCP endpoints and better SDK exports.

Updated Jun 25, 20267 min read

Implementation

Path to ship.

Add stable operation ids and human-readable summaries for every important route.

Describe required parameters, request bodies, auth schemes, and error responses.

Include examples for common success and failure paths.

Mark destructive or private operations so policy review is straightforward.

Guide

Spec fields agents care about

Agents benefit from names, summaries, descriptions, required fields, enum values, examples, and response shapes. Missing detail forces the model to infer behavior from route names alone.

Astrail can generate from imperfect specs, but high-quality specs reduce review work and improve search_docs results for large APIs.

Guide

Common fixes

Replace vague operation ids with action-oriented names, add examples for nested objects, document pagination, and make auth requirements explicit at route level when they differ from the global default.

If a route changes state, label it clearly. That makes it easier to require confirmation, hide it from public surfaces, or keep it out of early agent trials.

FAQ

Common questions.

Can Astrail generate MCP from incomplete OpenAPI?

Yes, but incomplete specs usually need more review. Better schemas and examples produce more reliable generated tools.

Which OpenAPI field matters most for tool names?

Stable operation ids help, followed by clear summaries and route descriptions.