The Anthropic Beta Header Format
ArchiveExpert
Anthropic's API exposes new features behind a specific HTTP header that carries comma-separated feature flags. Name the header (lowercase, hyphens). Flag format: CONGRESS{header}. Example: CONGRESS{x-beta-features}.
Show hint
Company + the Greek letter for 'still being tested'.
Archive — no submissions accepted
This challenge is preserved for reference. Play live challenges at /challenges.