Early adopter insight
"We caught three breaking changes in week one and avoided a customer-facing release incident."
Merge-Time API Protection
Stop Breaking API Changes Before They Ship.
API Contract Guard integrates with GitHub to automatically detect and block breaking OpenAPI changes at merge time.
GitHub-native • OpenAPI-first • No code changes required
Secure GitHub OAuthNo code changes requiredData stored securely
GitHub PR check with actionable failure context
Contract changes are classified and enforced directly in the pull request before merge.
Trusted by API-first teams
Built for teams that ship frequently and need confidence in every merge.
Merge-time enforcement
Policy-backed PR checks prevent accidental API regressions before they leave GitHub.
Audit-ready decisions
Track failures, waivers, and policy outcomes with a clear operational history.
How it works
Go from install to enforced API safety in minutes.
Connect GitHub and install the app
Authorize once and connect the repositories you want protected.
Define policy defaults and service overrides
Set org-level guardrails and tune strictness per service as teams mature.
Block breaking changes automatically in PR
Contract diffs run in pull requests and enforce release safety before merge.
Built for API-first engineering teams
Adopt contract safety without changing your delivery workflow.
Jump to detailed capabilities:Automated Contract DiffingPolicy EngineWaivers
Product workflow visuals
Understand how checks, policy editing, and operations work together.
Policy Engine controls
Define enforcement rules and service-level exceptions without changing developer workflow.
Operational dashboard overview
Track setup progress, recent checks, and risk signals in one operations-focused dashboard.
Prevent production API breakages before merge.
Start your 3-day trial, choose monthly or yearly billing, and onboard your first repositories.