Optic
by Optic · Open-source CLI for OpenAPI linting, diffing and testing
51.5 — BenchRank score out of 100
Screenshots of Optic
Homepage Pricing page
Overview
Optic is an open-source command-line tool for OpenAPI linting, diffing and testing. It generates OpenAPI from test traffic and keeps specs accurate through automatic schema testing and patches, and applies breaking-change detection and lint rules from the same tool. It supports $ref and specs split across multiple files, and installs via npm.
- Best for
- API teams on OpenAPI who want to catch breaking changes and keep specs matching real traffic
- Pricing
- No pricing is shown for Optic; the project is MIT licensed and distributed free through npm.
- Runs on
- CLI
Strengths and trade-offs
Strengths
- Generates and updates OpenAPI specs from test traffic
- Breaking-change checks and lint rules in the same tool
- Supports $ref and specs split across multiple files
- MIT licensed, installed as a global npm CLI
Trade-offs
- Repository was archived on 12 Jan 2026 and is now read-only
- No further development expected; Optic Labs is now part of Atlassian
- Requires Node and npm tooling; distributed only as a command-line package
How this score is made up
Each dimension is scored out of 100 and combined into the headline score using fixed weights.
- MCP support
- 0 out of 100
- API quality
- 10 out of 100
- Documentation
- 90 out of 100
- Agent friendliness
- 45 out of 100
- Pricing transparency
- 100 out of 100
- Changelog
- 100 out of 100
- Marketing site structure
- 80 out of 100
- Operational trust
- 35 out of 100
Measured, but not part of the score
Useful to know, but not a mark for or against the product — so these do not affect the ranking.
- Openness
- 60 out of 100
- Maintenance
- 5 out of 100
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