Update from support feedback: OpenAPI URL fetch failures during build - #6913
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Split the troubleshooting accordion: the curated page keeps a complete, compact answer, and the deep diagnostic walkthrough moves to a new help-center page that is searchable but excluded from the sidebar. - Add hidden + searchable "Help center" group to docs.json - Revert es/fr/zh edits so the translation pipeline regenerates them - Broaden the allowlist vocabulary entry to cover inflected forms Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
ethanpalm
approved these changes
Aug 7, 2026
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Summary
Multiple support tickets escalated to humans after Mintlify builds failed with "Failed to fetch OpenAPI file for anchor or tab" against a hosted
openapiURL, and the existing troubleshooting page had no coverage for this class of failure.Changes
api-playground/troubleshooting.mdxthat lists the common causes (unreachable/private host, auth-required endpoint, TLS/DNS, transient 5xx, spec republishing mid-build), shows how to reproduce the fetch withcurland validate locally withmint validate, and recommends either committing the spec into the docs repo (preferred when the source is behind auth) or serving it from a stable public HTTPS URL, with CI sequenced so the spec publishes before Trigger deployment is called.Support context
Note
Low Risk
Documentation and navigation config only; no product code, auth, or data-handling changes.
Overview
Adds support-oriented documentation for Mintlify builds that fail with "Failed to fetch OpenAPI file for anchor or tab" when
docs.jsonreferences a hosted OpenAPI URL.API playground troubleshooting gains a new accordion covering typical causes (private/unreachable hosts, auth, TLS/DNS, transient errors, spec republishing mid-build), unauthenticated public
curlchecks, and fixes: commit the spec in the docs repo or serve it from a stable public HTTPS URL—with a link to a deeper guide.A new help center page walks through reproducing the fetch outside Mintlify, interpreting
curlresults, usingmint validate, diagnosing CI race conditions when Trigger deployment runs before the spec is published, and committing the spec when the URL cannot be public. The page is wired in via a hidden, searchable Help center tab indocs.json. Vale allowlist inflections are added for prose linting.Reviewed by Cursor Bugbot for commit 1d68eeb. Bugbot is set up for automated code reviews on this repo. Configure here.