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Contractr
Spin up a mock API server in under 2 minutes - no backend.
Contractr lets freelancers and contractors define API contracts, spin up instant mock servers, and share live environments with clients -without writing a single line of backend code. Define your API, share a link, watch the requests come in. That's it.
Hey Product Hunt 👋
I'm an AI engineer. On every team I've worked with, I've watched
FE + BE try to "align on the API" the same way: a messy sync, a
Notion doc nobody maintains, and Swagger auto-generated from code
six months later that tells you what the API "is" but not what it
was supposed to be or why.
The result is always the same - onboarding takes weeks, integration
bugs ship, and the next dev to touch the service spends a week just
understanding it.
Contractr is where FE + BE build the contract together and keep
it alive:
• Define endpoints + schemas collaboratively
• Instant mock server so FE isn't blocked
• Share link for PM/QA - no GitHub account needed
• Comments + approval workflow on changes
• Versioning with breaking-change detection
• Request logs to see what's actually called vs. what was agreed
The contract should be a living artifact the team owns - not a doc
one person wrote and nobody maintains.
Free: unlimited contracts + endpoints, 5-min mocks.
Solo $19/mo: always-on mocks + share links + logs.
Agency $49/mo: team RBAC + approval workflows.
What's your team's "source of truth" for API contracts right now -
and how honest are you being when you call it that?
No comment highlights available yet. Please check back later!
About Contractr on Product Hunt
“Spin up a mock API server in under 2 minutes - no backend. ”
Contractr was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #122 on the daily leaderboard. Contractr lets freelancers and contractors define API contracts, spin up instant mock servers, and share live environments with clients -without writing a single line of backend code. Define your API, share a link, watch the requests come in. That's it.
Contractr was featured in Freelance (31.1k followers), API (98.1k followers) and Software Engineering (42.4k followers) on Product Hunt. Together, these topics include over 20.5k products, making this a competitive space to launch in.
Who hunted Contractr?
Contractr was hunted by Anubhav Girdhar. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Anubhav Girdhar