For AI agents: a documentation index is available at the root level at /llms.txt and /llms-full.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.
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Changelog

May 28, 2026
May 28, 2026

5.41.0

(feat): Add X-Request-Id header to all CLI v2 HTTP requests for request tracing and debugging.

5.40.1

(fix): Add /openapi.json, /openapi.yaml, /openapi.yml, /asyncapi.json, /asyncapi.yaml, and /asyncapi.yml to the link validator whitelist, and add pattern-based matching for dynamic API spec paths like /openapi/<id>.json so fern check no longer reports false broken-link errors for these special doc pages.

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May 27, 2026