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Meta Drops Legacy Graph API Protocol Features (July 2026)

Facebook Deprecation Rolling out Announced Rollout: 29 July 2026 to 27 October 2026 Last verified

Quick answer

From version 26.0 on 29 July 2026, the Graph API stopped supporting several legacy protocol behaviours. The same changes reach all remaining supported versions on 27 October 2026.

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What changed

  • The pretty parameter is ignored, and responses use compact formatting.
  • The debug parameter is ignored and no debug envelope is added, though the token debugging endpoint is unaffected.
  • A request that includes a date format parameter returns an error.
  • A root request that passes a list of ids returns an error, so per-object requests or supported batching are needed instead.
  • Legacy ETag response headers and the 304 Not Modified behaviour are removed, so requests return full responses.
  • These apply to version 26.0 from 29 July 2026 and to all remaining supported versions from 27 October 2026.

Who is affected

  • Anyone running custom Graph API scripts or integrations that rely on these legacy parameters or on ETag caching.

What to check this week

  • Check custom Graph API scripts for the affected parameters and for ETag caching, before the October date. Recommended in the platform documentation: read the official page

Official sources

Related

Glossary

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Page history
  • Updated on 8 October 2026: Published automatically after verification against the official source.