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Mock APIs

Fake a few endpoints and pass everything else to your real API, so you can test one change without a full fake server.

Create a mock API

Sign in to get a free path mock for 1 day (100 requests/day). No card required.

Sign in for a free mock
Free vs with credits

Free

$0free

  • Mock APIs1 at a time, lasts 1 day
  • URLPath only (random name)
  • Path traffic100 / day
  • Subdomain trafficNot included
  • Rules per mock5
  • Pass-through to your real APIYes
  • Conditions (query, header, JSON body)Not included
  • Variants and error injectionNot included
  • OpenAPI import and private modeNot included
  • Request logLatest 50

With credits

$0.10a month per mock

  • Mock APIsAs many as you like, kept while paid
  • URLPath; optional subdomain (+5 cr/mo)
  • Path traffic120 / hour (upgrades to 600 / 2,000 / 6,000)
  • Subdomain traffic1 credit / 500 requests
  • Rules per mock100
  • Pass-through to your real APIYes
  • Conditions (query, header, JSON body)Yes
  • Variants and error injectionYes
  • OpenAPI import and private modeYes
  • Request log1,000 requests, 30 days
Buy credits from $1

Path traffic is rate-limited, not billed per request. Subdomain vanity URLs meter Worker use. Out of credits, a paid mock answers 402 until you top up.

How it works

Create a mock

  • Get a mock URL in one click.
  • Optionally add your real API as the fallback.

Add rules

  • Pick a method and path, then set the status, headers and body.
  • Add delays, variants or errors to test edge cases.

Point your app at it

  • Matched requests get your mock.
  • Everything else passes through to your real API.