Validate AI in simulated API environments
(before it breaks in production.)

The agentic SDLC needs reliable test environments. WireMock Cloud delivers simulated APIs that mirror reality — so you can test code and agent behavior without ever risking production.

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OVO Energy
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Dependencies create unstable environments. AI makes things worse.

AI agents generate heaps of unverified code. Slow, flaky, expensive test environments can't keep up. Relying on shared production replicas is no longer an option.

WireMock gives every developer and every agent a place to build.

Replace the APIs you don't control with simulations you do. Stateful, realistic, stood up in minutes from a prompt. Ready to ship? Tear down and switch to the real APIs.

10 hrs/week Saved per developer
3x Shorter release cycles
90% Faster test setup

An API simulation platform built for the AI-native enterprise

Simulate API environments with AI

The world’s most advanced API simulation, light years beyond basic mocking. Simulate REST, GraphQL, or gRPC with stateful behavior, realistic data, and production-grade failure modes.

See features
WireMock Cloud editor showing a stateful mock of the Google Sign-In API

Start from a realistic template

Turnkey simulations of the APIs you’re already using so you can get started instantly, validated through WireMock AI (not just an OpenAPI spec). Point the AI to any API to create a new template.

Find a template
WireMock Cloud featured templates: Anthropic, Mastercard, GitHub, Azure, OAuth2 and WhatsApp Business

Do everything with agents

Every capability in WireMock Cloud is exposed as an Agent Skill and through a native MCP server. Anything a developer can do with WireMock, an AI agent can do as well.

Start with agents
Building an API simulation through an AI agent skill command

Deploy anywhere

Simulate and record APIs on your laptop, in your cluster, or in CI/CD. The same simulations run everywhere your code and your agents do.

Start with Runner
WireMock Runner project with an OpenAPI spec and stub mappings open in an editor

Wherever AI meets your APIs, WireMock is the solution

Test agents in an API cleanroom

Give an unfinished agent a bounded place to work — with realistic API behavior, real edge cases, and zero blast radius.

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Build AI test environments

Replace shared, expensive test environments for small, deterministic, short-lived ones — that you can build with AI in minutes.

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Modernize service virtualization

Retire clunky, IT-centric legacy tools for cloud-native simulation that any developer, tester, or agent can self-serve.

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Accelerate code quality

AI made it easy to write code fast. WireMock makes it production-ready with the environments and feedback loops agents need.

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See it. Try it. Get the hang of it.

Experience all WireMock has to offer, and continue on the free forever edition if you just need the basics.