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WireMock

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The API mocking library most teams already use, with a cloud and MCP above it

Service Virtualization Software
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  • Deployment Cloud Based, On Premise, SaaS
  • Starting price Not published
  • Free trial Available
  • Best for Freelancers, Small Business, Medium Business

What is WireMock?

WireMock Cloud is an AI-native API simulation and mocking platform providing turnkey simulations of widely used APIs with AI-validated response data, native MCP integration and Agent Skills for agentic development, plus a runner and CLI for integration into pipelines.

WireMock's position rests on the open source library being close to a default in Java testing, which means the hosted product is not asking teams to adopt a new tool so much as to move something they already run locally into somewhere shared. That is a far shorter sale than convincing an organisation to buy service virtualization from scratch.

Turnkey simulations of common APIs is the practical time saver, since most teams needing to mock Stripe, Twilio or a cloud provider are rebuilding the same fixtures every other team has already built, and starting from a maintained simulation removes days of that work.

Native MCP integration is a genuinely useful application of the protocol rather than a badge, because an AI agent writing code against an API needs somewhere safe to exercise it, and a simulated endpoint it can call freely is safer than a sandbox with rate limits and real side effects. Rates are behind a get-pricing route.

Key Features of WireMock

  • API mocking and simulation
  • Open source WireMock library heritage
  • Turnkey simulations of common APIs
  • AI-validated response data
  • Native MCP integration
  • Agent Skills for agentic development
  • Runner and CLI for pipelines
  • Stateful simulation behaviour
  • Latency and fault injection
  • Team sharing of simulations
  • Integration with CI systems
  • Cloud hosted instances

WireMock Pricing

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Not published

Request pricing

WireMock routes pricing through a form rather than publishing rates. The open source WireMock library is free.

WireMock Specifications

Deployment
  • Cloud Based
  • On Premise
  • SaaS
Desktop
  • Web App
  • Linux
  • Mac
  • Windows
Built for
  • Freelancers
  • Small Business
  • Medium Business
  • Large Enterprise
Support
  • Email
  • Knowledge Base
Public API
Yes
Free trial
Yes
Free plan
No
Runs in browser
No
Customisable
No
Website
wiremock.io

WireMock Screenshots

WireMock screenshot 1

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WireMock FAQs

No rate is published. WireMock routes pricing through a get-pricing form, quoted per team. The open source WireMock library remains free.

The open source library is close to a default in Java testing, so the hosted product asks teams to move something they already run locally into somewhere shared rather than to adopt a new tool.

Maintained simulations of widely used APIs, so a team mocking Stripe, Twilio or a cloud provider starts from an existing fixture rather than rebuilding what every other team has already built.

An AI agent writing code against an API needs somewhere safe to exercise it, and a simulated endpoint it can call freely is safer than a sandbox with rate limits and real side effects.

Through a runner and CLI, so simulations start and stop as part of a continuous integration job rather than being managed by hand.