Free and open source, forever

Ship API changes
without breaking anything.

A deploy gate that stops breaking changes before they reach production, shared mocks that keep your team moving, and monitoring that pages you before your customers notice. The app you already use, with a team superpower bolted on.

Start free in 2 minutes See how it works

No credit card. Your local work never leaves your machine.

The app is free and open source. Always.

Requests, collections, code generation, local mocks, contract authoring: all MIT licensed, all yours, no account required. We will never paywall something you already have. Cloud is the optional team layer, and nothing more.

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The whole API lifecycle, covered

Mock while you build, contract-test before you ship, monitor once you're live. Three products, one platform, working together.

Hosted mocks

Unblock your team on day one

Give frontend, mobile, and partner teams a live API to build against before the real one exists. One always-on URL, updated anytime, no waiting on the backend.

  • Frontend stops waiting on backend
  • Onboard partners with a sandbox
  • Share one URL, change it anytime
Includes
Always-on public URLs Deploy from a recording Live request inspector Scenarios Latency + error injection Auth + rate limits Private or public Custom domains
Contract testing

Never break an integration again

Every release is checked against what your other services actually expect. Pact-compatible, so your existing Pact tests and can-i-deploy just work, and bi-directional testing verifies a provider's OpenAPI against consumer contracts without running it. If a change would break a consumer, the pipeline stops before it ships.

  • Works with your existing Pact tooling
  • Bi-directional: OpenAPI vs consumers, no provider run
  • One matrix shows what is safe to deploy
Includes
Pact-compatible broker + can-i-deploy CLI Bi-directional (OpenAPI) contract testing Deployment matrix (all version combos) Deploy check gate Consumer + provider contracts Verification results Deployment ledger Dependency map
API monitoring

Find out before your customers do

Run your API tests around the clock from the cloud and get paged the moment something breaks or slows down, instead of hearing it first from support.

  • Catch outages and regressions first
  • Watch latency trend over time
  • Alerts in Slack, email, PagerDuty
Includes
Scheduled + CI-triggered runs Uptime + latency history Run traces Assertion failures Status pages Alerting + escalation

Works with your local and internal APIs, not just public ones

Install a lightweight private runner inside your network. It connects out to the cloud (nothing inbound, nothing exposed), so all three products reach services that never touch the public internet: localhost, staging, on-prem, or a private VPC. Your traffic stays in your network; only results come back.

Outbound-only, no open ports Mock + test + monitor internal APIs Runs in Docker or your cluster Traffic stays in your network Bring your own secrets manager, zero secrets stored

One simple rule

Runs on your machine? Free.
  • Requests, collections, environments
  • Code generation (Robot, Playwright, more)
  • Local mock servers and recorder
  • Contract authoring and verification
  • CLI and Docker for CI
Runs on our servers, or for a team? Paid.
  • Hosted contract broker and deploy gate
  • Always-on shared mock servers
  • Scheduled monitors and alerting
  • Shared workspaces, roles, SSO
  • Private runner for internal APIs
  • Secrets from Vault, AWS, Azure, 1Password

Start free. Pay when it saves you time.

The desktop app is free and open source, forever. These plans are for the hosted cloud.

Monthly Yearly (2 months free)
Free
$0

Kick the tyres. A few mocks and monitors, no card.

Get started
  • 1 user
  • 3 applications
  • 3 contract relationships
  • 1 environment
  • 3 hosted mocks
  • Unlimited mocks from contracts
  • 3 monitors
  • 1,000 mock requests / month
  • 5 req/s rate limit
  • Monitor every 15 min
  • 8-hour history
  • 1 status page
  • Webhook alerts
  • Maintenance windows
  • Custom-branded status page
  • SAML single sign-on
Most popular
Pro
$19 /mo

For a working project: real quotas, fast monitors, webhooks.

Choose Pro
  • 5 users
  • 15 applications
  • 25 contract relationships
  • 3 environments
  • 15 hosted mocks
  • Unlimited mocks from contracts
  • 25 monitors
  • 250,000 mock requests / month
  • 10 req/s rate limit
  • Monitor every 1 min
  • 7-day history
  • 3 status pages
  • Webhook alerts
  • Maintenance windows
  • Custom-branded status page
  • SAML single sign-on
Team
$54 /mo
$9 / user

For a team shipping together: pay per seat, everything else unlimited.

Choose Team
  • Priced per user, unlimited seats
  • Unlimited applications
  • Unlimited contract relationships
  • Unlimited environments
  • Unlimited hosted mocks
  • Unlimited mocks from contracts
  • Unlimited monitors
  • 1M mock requests / month
  • 50 req/s rate limit
  • Monitor every 30 sec
  • 30-day history
  • 10 status pages
  • Webhook alerts
  • Maintenance windows
  • Custom-branded status page
  • SAML single sign-on

Prices exclude tax. Applicable VAT / sales tax is calculated at checkout.

Bigger team, a private runner, or custom limits? Talk to us about a custom plan.

Stop hoping your deploys are safe.

Set up your team in a couple of minutes and put a gate in front of your next release.

Start free