Show HN: Zof API Contract Check

Category: devtools

Tags: api-contracts, openapi, breaking-change-detection, api-governance, typescript, cli-tool

Score: 5.5/10 (Innovation: 5, Technical: 6, Documentation: 7, Utility: 4)

Zof API Contract Check is a TypeScript tool that compares local OpenAPI 3.0/3.1 contracts (and a JSON Schema subset) to detect breaking changes, reporting findings on removed endpoints, type incompatibilities, and policy violations. It offers a CLI, a library API, and runs offline without an account, making it a practical alternative to hosted API diff services for teams needing self-contained contract validation.

Target audience: backend developers, API platform engineers, DevOps engineers

Repository: https://github.com/Zof-AI/zof-api-contract-check/tree/e9d45f612e75406b1f943c7bab76fab600fa950f · TypeScript · Apache-2.0

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