Spectral
Flexible JSON and YAML linter for OpenAPI and more
Spectral is an open-source linter for structured documents such as OpenAPI and AsyncAPI specifications, enforcing custom rulesets for API quality. It runs locally as a CLI or library.
Key features
- OpenAPI and AsyncAPI linting
- Custom rulesets
- CI integration
- JSON and YAML support
Strengths
- Released under the Apache-2.0 license
- Easy to set up — beginner-friendly
- Active community (3.2k GitHub stars)
- Written in TypeScript
Spectral replaces
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