Launching today

API Contract Guard

Launching today

Block breaking OpenAPI changes before merge

3 followers

Block breaking OpenAPI changes before merge

3 followers

Visit website

A GitHub App that checks OpenAPI 3.x JSON or YAML contracts on every pull request and posts a native GitHub Check. It catches removed endpoints, responses, required inputs, and incompatible schema changes before merge—without adding a workflow file. Founding Starter offer: £1 for the first month, then £19/month.

Free Options

Launch tags:API•Developer Tools•GitHub

Launch Team

Blocks.aiThe Control Plane & Network Layer For AI Agents

Promoted

Maker

📌

I built API Contract Guard after seeing API compatibility checks treated as a manual release task. Install the GitHub App, open a pull request that changes an OpenAPI file, and the result appears directly in GitHub Checks—no workflow file or sales call. There is a live proof pull request and a £1 first-month founding offer. I would especially value feedback from teams maintaining public or internal APIs.

Report

1d ago

Installed it on a side repo last night and was surprised the check actually flagged a renamed query param our team had missed for weeks. No workflow file is a nice touch.

Report

6h ago

Maker

@emirdemirbwv23 Yes I felt like it was a much better "drop in" experience just using the GitHub app

Any other opinions, suggestions or complaints are welcome :)

Report

2h ago