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CORS
Cross-Origin Resource Sharing — browser security check on which origins may call your API. Set with response headers, not in the client.
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Open lesson fastapi-30 →Related — Web & APIs
FastAPIModern Python web framework. Type-driven, async-first, autogenerates OpenAPI doc…PydanticData validation library. Define a model, get parsing + validation + JSON seriali…RESTArchitectural style for HTTP APIs — resources at URLs, verbs in the HTTP method,…JWTJSON Web Token — a signed, base64-encoded payload used for stateless auth. Verif…OpenAPISpec for describing REST APIs as JSON/YAML. FastAPI emits one automatically; too…