DiffPal Demo

A tiny Go service with a deliberately flawed pull request showing how DiffPal reviews code inside GitHub Actions.

View the live demo review · DiffPal documentation · DiffPal source repository

What this demonstrates

The open demo pull request shows normal tests passing alongside a DiffPal review summary, actionable inline findings, repository-owned review instructions, an optional merge gate, and machine-readable artifacts.

Try the service locally

go test ./...
go run ./cmd/server

Create an order:

curl -X POST http://localhost:8080/orders \
  -H 'Content-Type: application/json' -H 'X-User-ID: user-123' \
  -d '{"product_id":"keyboard","quantity":2}'

Retrieve it:

curl http://localhost:8080/orders/ord-000001 -H 'X-User-ID: user-123'

Run DiffPal in your own repository

1. Create a repository from this template.
2. Add an OPENAI_API_KEY repository secret.
3. Open a same-repository pull request.
4. Inspect the DiffPal review.

The configured provider receives review context. Keep secrets out of workflows that execute untrusted fork pull request code.

Why the DiffPal check is red

The red DiffPal check is intentional. The permanent demo PR contains high-severity regressions so the repository can demonstrate merge gating.

Demo repository policy

main is the clean baseline. The canonical demo PR remains open and should not be merged.