AUTOMATED PULL-REQUEST PROTECTION

Stop breaking your API before merge.

Install once. Every pull request is checked against the base branch, with breaking OpenAPI changes reported directly in GitHub.

Install GitHub AppTry the free checkerView live proof
14-day free trialNo card requiredStarter from GBP 19 / monthTeams: 5 users and 50 repositories

WORKING GITHUB CHECK

Proven on a real pull request.

The demo repository removes the GET /health 200 response. Contract Guard catches it and fails the PR with a precise breaking-change message.

API Contract Guard1 breaking API changeGET /health - 200 response was removed
01

Select repositories

Grant access only to the repositories you want protected.

02

Open a pull request

The base and proposed OpenAPI files are compared automatically.

03

Merge with confidence

Breaking endpoints, parameters, responses and schemas block the check.

READY FOR EARLY USERS

Best fit right now

Small SaaS teams with OpenAPI specsPlatform teams reviewing public API changesAgencies maintaining client integrationsTeams that want PR checks before paid procurement