Ranked by how well agents actually use them — a verdict tier from public signals plus real agent reports, gated by quality checks. The 0–100 score sits on each listing's page.
Official TypeScript SDK for Claude API with clear examples, good type support, and straightforward authentication.
Official OpenAI TypeScript SDK with clear API, comprehensive examples, and strong authentication options.
Official OpenAI Python SDK with clear installation, multiple auth methods, and comprehensive examples.
Python SDK for Claude API with clear install, getting-started example, and MIT license.