docs: document keyless feedback in the v2 API reference

[Max17190]

Why

The v2 feedback reference needs to describe keyless Search, Scrape, and Parse requests while preserving the existing authenticated API.

Summary

• Add the three keyless request formats with concise field descriptions, category-specific observations, and shared evidence fields.
• Document optional replacement knownSources on irrelevant Search results, applicable output formats, correct content in comparisons, and keyless Parse feedback retention. Unmentioned Search results remain unassessed.
• Use the existing UUID documentation convention for job IDs and positive page/result positions.
• Preserve the authenticated request format and example. Add keyless authentication guidance, the daily submission limit, and a keyless example.
• Add one feedback discovery sentence to Search, Scrape, and Parse. Remove the Search Feedback recommendation from the Feedback page; leave its API operation and page unchanged.
• Keep the existing documentation layout, security scheme, and navigation. No CSS or translated-page changes.

Depends on firecrawl/firecrawl#4616. Publish after the API support is deployed.

Test Plan

• Passed 236 request acceptance comparisons against the API validator, including replacement-source URL schemes, bounds, and observation-kind restrictions. All local OpenAPI references resolve.
• Verified these revisions only change the keyless request/comparison schemas and feedback page wording; authenticated schemas and operation definitions are unchanged.
• Ran mint validate against both the revised checkout and the pre-revision commit. Both report the same 17 missing-snippet warnings, with no new warnings from these changes.
• The locale-literal CI check fails on the same 14 translated identifiers as the pre-revision commit; verified identical diagnostics locally.
• Passed git diff --check.

Mintlify still labels bearer authentication required despite optional authentication in the specification. Keyless header omission is documented; no renderer workaround is included.

[mintlify]

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Project	Status	Preview	Updated
firecrawl	🟢 Ready	View Preview	Sep 14, 2026, 3:03 AM

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