Kits / 01 · Claude API Kit

Claude API Kit

10 runnable TypeScript examples for the Claude API. Read one, run it, steal it — and ship a real feature this afternoon instead of reading docs all week.

What's inside

Ten self-contained files.

  • Streamingtoken-by-token output for responsive chat UIs.
  • Tool usetyped tools plus an automatic agent loop, validated with Zod.
  • RAGretrieve and answer with citations, no extra service.
  • Guaranteed JSONstructured output that's validated before you trust it.
  • Prompt cachingcut input cost dramatically on repeated context.
  • Vision · PDF · Batchimage Q&A, native PDF reading, half-price async bulk runs.
  • Reusable clientone configured client with a model picker, shared across every example.
Requirements

Bring two things.

Node 20+ and your own Anthropic API key. No framework lock-in, no vendor to wire up beyond your key. You ship code, not compute.

License

Yours to keep.

Single-developer commercial license with lifetime updates. Use it in your own products. When the API changes, you get the refreshed examples — no re-purchase.

Get it — €19