Is your staging API
breaking prod?

Paste and compare

The problem it solves

You deploy to staging. Tests pass. You promote to production — and something breaks for real users. The reason is almost always a schema difference nobody noticed:

• •staging returns userId as number, prod returns it as string
• •a required field exists in prod but got removed in the new staging build
• •a key was renamed between the old and new API version
• •prod has an extra required field that staging omitted

Every existing tool for this requires an OpenAPI spec. Most APIs — especially third-party ones — don’t have one. TypeMorph infers the schema from the actual response, so you can compare anything.

In CI — catch it before it ships

# Compare staging vs production live
typemorph envdiff \
  --a https://staging.api.com/users/1 \
  --b https://prod.api.com/users/1

# File-based comparison
typemorph envdiff staging-response.json prod-response.json

# GitHub Actions PR comment
typemorph envdiff \
  --a https://staging.api.com/users/1 \
  --b https://prod.api.com/users/1 \
  --format github >> $GITHUB_STEP_SUMMARY

The CLI command exits with code 1 on breaking changes. Wire it into your GitHub Actions pipeline and get a diff in your PR summary before the deployment ever reaches production.

FAQ