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What is API Specification?

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In short

Formal description of endpoints, schemas, and errors—e.g., OpenAPI—used for docs, mocks, and validation.

Explained

API specifications describe requests, responses, and auth so clients and servers agree without ambiguity. They power contract tests, code generation, and agent tool calling where the model must follow a rigid JSON schema.

Where it shows up at Thinkia

Products

Further reading

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