@stoplight/spectral-cli
Advanced tools
[](https://stoplight.io/api-governance?utm_source=github&utm_medium=spectral&utm_campaign=readme) [ against predefined or custom rules to ensure it adheres to best practices and standards.
spectral lint openapi.yamlCustom Rules
Spectral allows users to define their own rulesets in a YAML file. The `-r` option specifies the custom ruleset file (`custom-ruleset.yaml`) to be used for linting the OpenAPI document (`openapi.yaml`).
spectral lint -r custom-ruleset.yaml openapi.yamlTransforming Documents
Spectral can transform documents based on rules. The `transform` command processes the input document (`openapi.yaml`) and outputs the transformed document (`transformed.yaml`).
spectral transform openapi.yaml -o transformed.yamlValidating Documents
The `validate` command checks the provided document (`openapi.yaml`) for structural correctness and adherence to the specified format (e.g., OpenAPI, AsyncAPI).
spectral validate openapi.yamlswagger-cli is a command-line tool for validating and bundling OpenAPI definitions. It focuses on ensuring that OpenAPI documents are valid and can be bundled into a single file. Compared to Spectral, it is more specialized in OpenAPI validation and bundling but lacks the extensive linting and custom rule capabilities.
openapi-lint is a linter specifically for OpenAPI documents. It provides a set of rules to enforce best practices in OpenAPI specifications. While it offers similar linting capabilities, it is not as flexible as Spectral in terms of custom rules and document transformation.
Install
npm install -g @stoplight/spectral-cli
# OR
yarn global add @stoplight/spectral-cli
Find more installation methods in our documentation.
Lint
spectral lint petstore.yaml
If you need help using Spectral or have a support question, please use GitHub Discussions. It's also a great place to share your rulesets, or tools that leverage Spectral.
If you have a bug or feature request, please create an issue.
Ajv is a JSON Schema validator, and Spectral is a JSON/YAML linter. Instead of just validating against JSON Schema, it can be used to write rules for any sort of JSON/YAML object, which could be JSON Schema, or OpenAPI, or anything similar. Spectral does expose a schema function that you can use in your rules to validate all or part of the target object with JSON Schema (we even use Ajv used under the hood for this), but that's just one of many functions.
No problem! A hosted version of Spectral comes free with the Stoplight platform. Sign up for a free account here.
Speccy was a great inspiration for Spectral, but was designed to work only with OpenAPI v3. Spectral can apply rules to any JSON/YAML object (including OpenAPI v2/v3, Arazzo, and AsyncAPI). Speccy has mostly been abandoned now, and is JavaScript not TypeScript.
If you're using Spectral for an interesting use case, create an issue with details on how you're using it. We'll add it to a list here. Spread the goodness 🎉
If you are interested in contributing to Spectral, check out CONTRIBUTING.md.
Spectral is 100% free and open-source, under Apache License 2.0.
If you would like to thank us for creating Spectral, we ask that you buy the world a tree.
FAQs
[](https://stoplight.io/api-governance?utm_source=github&utm_medium=spectral&utm_campaign=readme) [
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