Optic

aid: optic
name: Optic
description: Optic is an open source tool for OpenAPI linting, diffing, and testing that helps prevent breaking changes, publish
  accurate documentation, and improve API design through behavior-aware specification comparison and forwards-only governance.
type: Index
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- API Governance
- Breaking Changes
- Contract Testing
- Diff
- Linting
- OpenAPI
- Testing
url: https://raw.githubusercontent.com/api-evangelist/optic/refs/heads/main/apis.yml
created: '2026-03-25'
modified: '2026-03-26'
specificationVersion: '0.19'
apis:
- aid: optic:optic-cli
  name: Optic CLI
  description: The Optic CLI provides OpenAPI diffing, linting, and breaking change detection from the command line, comparing
    two versions of an OpenAPI specification using behavior-aware diffing and applying style guide rules with forwards-only
    governance.
  humanURL: https://www.useoptic.com/docs
  tags:
  - Breaking Changes
  - CLI
  - Diff
  - Linting
  - OpenAPI
  properties:
  - type: Documentation
    url: https://www.useoptic.com/docs
  - type: GettingStarted
    url: https://www.useoptic.com/docs
  - type: OpenAPI Diff
    url: https://www.useoptic.com/docs/diff-openapi
  - type: Breaking Changes
    url: https://www.useoptic.com/docs/detect-breaking-changes
  - type: Linting
    url: https://www.useoptic.com/docs/lint-openapi
  - type: ChangeLog
    url: https://www.useoptic.com/docs/openapi-changelog
  - type: API Verification
    url: https://www.useoptic.com/docs/verify-openapi
common:
- type: LinkedIn
  url: https://www.linkedin.com/company/useoptic
- type: Website
  url: https://www.useoptic.com
- type: Documentation
  url: https://www.useoptic.com/docs
- type: Core Concepts
  url: https://www.useoptic.com/docs/core-concepts
- type: GitHubRepository
  url: https://github.com/opticdev/optic
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com