Mockserver

Name: Mockserver
Author: mock-server

by mock-serverversion 9.2.0i★ 5,008iRuns on your computer

Registry namecom.mock-server/mockserver

How to install

What it does

Mock, record/replay, verify and chaos-test any HTTP, REST, gRPC or LLM dependency over MCP.

Connects Runs on your computer
Account or key No key needed
Category Search & AI memory

Install

Pick the AI app you use, then copy the settings.

Passed 3/3 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Docker on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Docker
One time only; it works for every server that needs Docker
Open the Docker download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "mockserver": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "docker.io/mockserver/mockserver:9.2.0"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Mockserver and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Mockserver or shows a Mockserver tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Mockserver yet

Mockserver runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Mockserver

Steps for Claude →Install Docker on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Docker on your computer first (one time)
Steps for Cursor →Install Docker on your computer first (one time)
Steps for VS Code →Install Docker on your computer first (one time)

B · Others in Search & AI memory that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Context7✓ ChatGPT
AIHOT✓ ChatGPT
Sui Knowledge Base (kapa.ai)✓ ChatGPT

Works with Claude Code, with some setup first

Install Docker on your computer first (one time)

Install Docker
One time only; it works for every server that needs Docker
Open the Docker download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --scope user mockserver -- docker run -i --rm docker.io/mockserver/mockserver:9.2.0

Done

Type /mcp in Claude Code
You should see Mockserver listed as connected
Done
Try it
Use Mockserver and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Mockserver or shows a Mockserver tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Docker on your computer first (one time)

Install Docker
One time only; it works for every server that needs Docker
Open the Docker download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Mockserver and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Mockserver or shows a Mockserver tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Docker on your computer first (one time)

Install Docker
One time only; it works for every server that needs Docker
Open the Docker download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Mockserver and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Mockserver or shows a Mockserver tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Mockserver💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user mockserver -- docker run -i --rm docker.io/mockserver/mockserver:9.2.0

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "mockserver": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "docker.io/mockserver/mockserver:9.2.0"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "mockserver": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "docker.io/mockserver/mockserver:9.2.0"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "mockserver": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "docker.io/mockserver/mockserver:9.2.0"
      ]
    }
  }
}

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

At a glance

GitHub stars i: 5,008
Downloads per weeki: Not on npm/PyPI
Verified domain: ✓ mock-server.com
Licence i: Apache-2.0
Connection: Runs on your computer
Transport: streamable-http
Latest versioni: 9.2.0
Categoryi: Search & AI memory
Published to registryi: Oct 27, 2026
Code last changedi: Nov 12, 2026
Maker: mock-server
Packages: oci: docker.io/mockserver/mockserver:9.2.0
Repo: mock-server/mockserver-monorepo
Website: www.mock-server.com
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 12, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain mock-server.com (the registry checks domain ownership)
✓ Pass
Still maintained
Code last changed today
✓ Pass
Has a licence
Uses Apache-2.0
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Search & AI memoryi

More stars than 99% of the other 5981 servers in this category
Published to the registry more recently than 69% of the other 5981 servers in this category
Basic checks equal to or better than 100% of the other 5981 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Mockserver safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed today, and the latest version (9.2.0) reached the registry 16 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Docker on your computer.

What can I use instead?

In the same category: Context7, Codebase Memory, Ruflo

Others in the same category

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

by upstashWidely used↓ 1.2M/wk★ 64.6KUpdated 3 days ago

Computer or cloud

Install

Codebase Memory

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

by DeusDataWidely used↓ 16.8K/wk★ 48.5KUpdated 26 days ago

Runs on your computer

Install

Ruflo

Agent teams, swarms, memory and hooks for Claude Code and Codex, served over MCP.

by ruvnetWidely used↓ 74.3K/wk★ 81.5K Stars for the whole repoUpdated yesterday

Runs on your computer

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

MockServer

=====

MockServer mocks, records, and chaos-tests any HTTP(S) dependency your application talks to — one binary, no per-protocol setup.

Why MockServer

One port, every protocol — HTTP/1.1, HTTPS, HTTP/2, gRPC & gRPC-Web, WebSockets and raw TCP are auto-detected from the first bytes of each connection. Beyond that: HTTP/3 (QUIC, experimental), JSON-RPC for MCP/A2A mocking, and AsyncAPI-driven testing against Kafka/MQTT brokers.
Mock, proxy, or both — return canned/templated/callback responses, or sit as a proxy (port forwarding, HTTP proxy, HTTPS tunneling, SOCKS) and record, inspect, and modify real traffic in flight, with full visibility into TLS-encrypted exchanges.
Chaos engineering built in — inject latency, dropped connections, and errors on demand to see how your application copes when a dependency misbehaves.
Mock AI too — chat-completion APIs for OpenAI, Anthropic, Gemini, Bedrock, Azure OpenAI and Ollama (including streaming), plus a built-in MCP server so AI coding assistants can drive MockServer directly.
Generate mocks, don't hand-write them — from an OpenAPI/Swagger spec, with request matching on method, path, query, headers, cookies, and body (JSON, XML, JSONPath, XPath, regex).
Fits your stack — Java, JavaScript/Node, Python, Ruby, Go, .NET, Rust, and PHP clients, plus JUnit and Spring support; runs as Docker, Helm/Kubernetes, a JAR, or a WAR, with a live dashboard and optional clustered state for multi-instance deployments.

See the changelog for what shipped in each version.

Getting started in 60 seconds

Run MockServer with Docker, then mock an endpoint and call it:

# 1. Start MockServer

docker run -d --rm -p 1080:1080 mockserver/mockserver

2. Mock an endpoint: GET /hello -> 200 "Hello World"

(MockServer exposes a REST control plane on the same port)

curl -X PUT http://localhost:1080/mockserver/expectation \ -H 'Content-Type: application/json' \ -d '{ "httpRequest": { "method": "GET", "path": "/hello" }, "httpResponse": { "statusCode": 200, "body": "Hello World" } }'

3. Call your mock

curl http://localhost:1080/hello

-> Hello World

…or, on macOS / Linux, install with Homebrew and run the mockserver command directly:

brew install mockserver

mockserver run --port 1080

For every way to run MockServer — Docker, docker-compose recipes, the mockserver CLI, a JVM-less binary bundle, Helm/Kubernetes, the JAR, and Testcontainers — see the Self-Hosting MockServer guide. The same setup can be driven from any client library or the dashboard at http://localhost:1080/mockserver/dashboard.

One-command recipes

The examples/docker-compose recipes are a single docker compose up each — mock from an OpenAPI spec, a record/replay proxy, a contract-validating proxy, or a chaos proxy:

cd examples/docker-compose/mock-from-openapi

docker compose up curl http://localhost:1080/pets

Drive it from Postman or Bruno

Postman — click the button above, or import examples/postman (guide).
Bruno (open-source, git-native) — open examples/bruno in Bruno via Open Collection (guide).

Install

Channel	Command
Docker	`docker run -d --rm -p 1080:1080 mockserver/mockserver`
Docker from GitHub Container Registry (avoids Docker Hub's pull limit)	`docker run -d --rm -p 1080:1080 ghcr.io/mock-server/mockserver`
Homebrew (macOS/Linux)	`brew install mockserver`
Helm (chart guide)	`helm upgrade --install --namespace mockserver mockserver oci://ghcr.io/mock-server/charts/mockserver`
Maven Central	`org.mock-server:mockserver-netty-no-dependencies` — see all Maven artifacts (server, WARs, JUnit 4/5, Spring, Maven plugin)
npm	`mockserver-node` (start/stop)

Client libraries (create expectations, verify requests, drive the control plane from your tests):

Full install options (SNAPSHOT repository, WAR deployment, Testcontainers modules, package-manager channels) are on the Self-Hosting guide and Where to find MockServer.

Requirements

Runtime: Java 17+ (raised from Java 11 in MockServer 6.0.0 — see the Java 17 / Jakarta upgrade guide; pin to 5.15.x if you need Java 11). The official Docker image bundles its own JVM, so containerised users need no JVM of their own.

Building from source: JDK 17+.

Security note: MockServer is a development and testing tool only — see SECURITY.md.

Documentation

Usage guide: www.mock-server.com
Architecture, code structure, infrastructure, and operations docs: docs/
AI/MCP integration: built-in MCP server at /mockserver/mcp — see llms.txt and the AI Integration docs

Versions

What changed: changelog and GitHub releases (every version is also a git tag mockserver- ).
API docs for a version: Java API at https://mock-server.com/versions/ /apidocs/index.html; REST API on SwaggerHub (one spec per major.minor.x).
Java 11: the last Java 11-compatible release is 5.15.0 (January 2023).

6.0.0 breaking change: the shaded Maven form was removed. Replace mockserver-netty: :shaded with mockserver-netty-no-dependencies: (same shaded bytes, new coordinates).

Community & Contributing

Issues / bugs / feature requests: GitHub Issues — please include your MockServer version, how you're running it (Docker, Maven plugin, etc.), and INFO-level (or higher) log output.
Discussions: GitHub Discussions
Roadmap: GitHub Project
Security policy: SECURITY.md
Community tools: MockServer Browser Admin, a React + TypeScript web UI for managing expectations
Contributing: pull requests are very welcome — read CONTRIBUTING.md first, then check the open issues and let us know if you intend to work on something.

Maintainers

James D Bloom

Mockserver

What it does

Install

Install Docker

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Docker

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Docker

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Docker

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Discussion

User reviews

Compared with others in Search & AI memoryi

Common questions

Others in the same category

Context7

Codebase Memory

Ruflo

README from the maker

Why MockServer

Getting started in 60 seconds

2. Mock an endpoint: GET /hello -> 200 "Hello World"

(MockServer exposes a REST control plane on the same port)

3. Call your mock

-> Hello World

One-command recipes

Drive it from Postman or Bruno

Install

Requirements

Documentation

Versions

Community & Contributing

Maintainers