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Beta user profile endpoints restructured; new thinking token count field added

BreakingBreaking change

This is a breaking change — integrations that rely on the affected behaviour will need updates before the change rolls out.

What changed

This diff contains several changes across the beta API:

  • Removed endpoints: POST /v1/user_profiles?beta=true (Create User Profile) and GET /v1/user_profiles?beta=true (List User Profiles) have been removed from the spec; clients calling these beta endpoints will break.
  • New endpoint: POST /v1/user_profiles/{user_profile_id}/enrollment_url?beta=true (BetaCreateEnrollmentUrl) has been added.
  • New required field: estimated_tokens is now listed in required on BetaThinkingContentBlockDelta, with a new beta flag thinking-token-count-2026-05-13; clients that deserialize this schema strictly may fail if they don't expect this field.
  • The BetaTrustGrant.status enum (active, pending, rejected) ordering changed cosmetically but no values were added or removed.

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