Optic

Acquired

Making APIs Developer-friendly

Summer 2018Founded 20185 peopleNew York, NY, USA; Remote

useoptic.com/ ↗X ↗GitHub ↗Crunchbase ↗See on the Idea Map B2B momentum

About

We help developers collaborate at scale and build better APIs. Optic’s open source tools makes it easy for developers to document API changes, review each other’s API changes during code review, and catch breaking changes before they reach production. **tl;dr** It’s version control but for behavior not code. We are taking the really successful ideas from Git / Code Review / CI and applying them to API descriptions and (future) other non-code artifacts. Engineers at [Snyk](https://snyk.io/) use Optic daily to make the new Snyk API great. Read their engineering blog: [Snyk's shift left approach to API development | Snyk](https://snyk.io/blog/snyk-api-development-shift-left/)

From their website

as of Jun 7, 2026useoptic.com ↗

Developer Tool

Optic provides tools to lint, diff, and test OpenAPI specifications to prevent breaking changes, ensure accurate documentation, and improve API design. It focuses on making APIs developer-friendly through automated checks and design guidance.

Optic offers capabilities to lint OpenAPI specs, compare diffs to detect breaking changes, and test schemas to ensure accuracy. It supports OpenAPI features like $ref and multi-file specs, enabling automated checks, documentation accuracy, and governance around API design changes across the API lifecycle.

Who it’s for: API teams and developers who design, document, and maintain OpenAPI specifications for their services

Features

OpenAPI linting
Diffing for breaking changes
Automated schema testing
Documentation accuracy improvements
Support for $ref and multi-file specs
Governance and design improvement tools
OpenAPI generation from test traffic

Active project with historical commits and repository activity; Optic Labs became part of Atlassian (indirect indication of corporate activity/partnerships).