On this page
What Graphwake adds
Nothing to write
A spec URL or one CI step, and team subscriptions. Consumers write no test code.
Consumer teams told
Only subscribed teams hear about a breaking change, in Slack, Microsoft Teams or email.
Impact score and ownership
Each change set gets a 0-100 score with public rules, next to a map of consumers and owners.
Before the merge
With the CI step, the alert reaches consumer teams while the change is still a pull request.
Where Graphwake fits
Graphwake starts from the OpenAPI spec you already have, so every endpoint is covered on day one, including the ones no contract test reaches yet. Consumer teams subscribe once to the endpoints they call, and each breaking change on those endpoints reaches them in their own channel.
At a glance
Pact facts as of 2026-11-01, from docs.pact.io and pactflow.io/pricing. “Not listed” means we did not find it there.
| Feature | Pact / PactFlow | Graphwake |
|---|---|---|
| Tells consumer teams of a change | Webhooks are listedper-team alert routing is not listed | Yesonly subscribed teams, in Slack, Microsoft Teams or email |
| What you write | Consumer-side tests that generate the contracts | Nothinga spec URL or one CI step, and team subscriptions |
| Impact score and ownership map | Not listed | Yes0-100 with public rules |
| What it is | A code-first tool for testing HTTP and message integrations with contract tests | A dependency map and alerting service for OpenAPI specs |
| What it checks | That the provider meets what consumers use | That a spec change breaks an endpoint, and who consumes it |
When Pact alone is enough
- Your consumers already have test suites and are willing to add contract tests.
- You need to verify behavior, not just the shape of a spec.
Using both
A spec check catches a changed shape early and cheaply, and Graphwake tells the right team. Contract tests then guard the integrations where a runtime break would be costly.
Questions
How is Graphwake different from contract testing?
Contract tests check a running service against what consumers expect. Graphwake reads your OpenAPI spec, finds breaking changes and tells the teams that consume the endpoint. There is nothing to run against your service.
Do consumers need to write code for Graphwake?
No. A consumer team subscribes to the endpoints it calls.
Can I keep Pact?
Yes. Graphwake works next to it.
Pick an endpoint. See who it reaches. 7-day free trial. Cancel before day 7 and you pay nothing.
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Competitor facts were checked on 2026-11-01; check their pages for the latest.