1 Commits

• feat(caching): implement Claude prompt caching with multi-turn support

  - Add ensureCacheControl() to auto-inject cache breakpoints
  - Cache tools (last tool), system (last element), and messages (2nd-to-last user turn)
  - Add prompt-caching-2024-07-31 beta header
  - Return original payload on sjson error to prevent corruption
  - Include verification test for caching logic
  
  Enables up to 90% cost reduction on cached tokens.
  
  Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

  Martin Schneeweiss · 2026-01-29 22:59:33 +01:00
  3a43ecb19b