mcp-server

MockServer: Easy API Mocking

Name: MockServer: Easy API Mocking
Author: mock-server

Get easy mocking of systems via HTTP/HTTPS with MockServer, ideal for startup founders integrating with multiple services

intermediate⏱ 30 minutes💵 Free

4,931 stars1,113 forksJavaGuide quality 8/10Updated 7/31/2026100% free · open source

What it is

Create a mock version of any system you integrate with via HTTP or HTTPS to test it without using the real thing, like a mock Amazon server to test your e-commerce app.

Real use case example

"A founder wants to test the payment processing of their new e-commerce app. They set up a mock Stripe server using MockServer and create a few test customers. They then write a script to simulate real payments and test the app's behavior. After testing, they know their app will work seamlessly with Stripe."

Best insideAny AI ClientCursor

When to use it

•When integrating with multiple external services and need to test how your application behaves with different responses
•When developing against an API that is still in development or has rate limiting
•When testing error scenarios or edge cases that are difficult to replicate with real services

Ready-to-paste prompt

curl -v -X 'PUT' 'http://localhost:1080/mockserver/expectation' -H 'Content-Type: application/json' -d '{"httpRequest":{"method":"POST","path":"/login"},"httpResponse":{"statusCode":200,"body":" authenticated successfully"}}'

Heads up: Make sure you have Maven (version 3.6.0 or higher) installed on your system, as it is required to build and run MockServer

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/mockserver-monorepo && curl -fsSL https://workflowstacks.com/api/skills/mockserver-monorepo/claude-skill -o ~/.claude/skills/mockserver-monorepo/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

What's inside — free to inspect

No purchase needed

Read the entire source before you build — unlike paid marketplaces that hide it behind a buy button.

top-level files

folders

121.7M

source size

Apache-2.0

license

Key files

.editorconfig

AGENTS.md

README.md

File tree

.buildkite/

.claude/

.github/

.opencode/

.tmp/

container_integration_tests/

docker/

docker_build/

docs/

examples/

helm/

jekyll-www.mock-server.com/

mockserver/

mockserver-client-dotnet/

mockserver-client-go/

mockserver-client-node/

mockserver-client-php/

mockserver-client-python/

mockserver-client-ruby/

mockserver-client-rust/

mockserver-core/

mockserver-integration-testing/

mockserver-jetbrains/

mockserver-node/

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

✅ Light setup

Installs with a command or two; your AI agent can do it for you.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/mockserver-monorepo && curl -fsSL https://workflowstacks.com/api/skills/mockserver-monorepo/claude-skill -o ~/.claude/skills/mockserver-monorepo/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

mock-server

Language

Java