anthropic-prompt-caching

Language model. The router (src/lib/llm-router.ts) calls this when a task matches its strengths. Used inside content-factory subagents, Anthropic Routines, and any /api route that calls Claude.

Cache framework prompts. 90% discount on cached tokens.

{
  "best_for": [
    "framework_reuse",
    "brand_voice_caching"
  ],
  "strengths": [
    "context_reuse"
  ]
}

{
  "header": "cache_control:ephemeral",
  "method": "sdk"
}