I Stopped Using Postman for Mock Servers. Here's What I Use Instead

Source: Dev.to

What I tried

Prism by Stoplight is excellent for local CLI mocking.

npx @stoplight/prism-cli mock api.yaml

Starts a local proxy in seconds, validates requests, and returns spec‑compliant responses.
Downside: it’s local only. You can’t share the URL with teammates or use it in CI without running a server somewhere.

Mockoon is a desktop app with a nice GUI. Great for offline work.
Limitation: also local‑only, and the cloud sync feature is paid.

moqapi.dev hit the sweet spot for my needs: spec‑import, hosted, free tier that doesn’t cap requests. Import an OpenAPI file, get a public URL that anyone on the team can call.

The concrete difference from Postman

• Postman: You manually maintain example responses. If your User object adds a preferredLanguage field, you must update every example that contains a user.
• moqapi.dev: You update the spec. The mock updates automatically on the next import. Your team gets the new field in the next request without touching anything else.

When I still use Postman

• Exploring an unfamiliar API
• Building custom request sequences
• Running a one‑off load test

Postman remains the best HTTP client for interactive exploration; I just don’t use its mock server anymore.