Anthropic publishes a Claude Cookbook on the platform docs

Sources: Claude Cookbook, anthropics/claude-cookbooks, HN 49031409
Summary: The Claude Cookbook is a categorized set of runnable guides on the Anthropic platform docs, backed by the public anthropics/claude-cookbooks repository and open to contributions. Sections cover agent patterns and orchestration, tool use including programmatic tool calling and embedding-based tool search, retrieval, prompt caching and batching, evals, observability, skills, fine-tuning, and cybersecurity, with entries dated from August 2023 through June 2026. It reached the HN front page on 2026-07-24 with 296 points.
Comments: HN commenters compared it to the OpenAI cookbook and other lab example collections, and one argued that agentic-workflow guides date quickly because the techniques get absorbed into the harness or the next model.
Why it matters: Vendor cookbooks are where undocumented harness behavior tends to appear first, ahead of the API reference.