MCPClientMock

Name: MCPClientMock
Author: Akkshay10

by Akkshay10version 1.0.2i★ 1iRuns on your computer

Registry nameio.github.Akkshay10/MCPClientMock

How to install

What it does

MCP server for James Bloom MockServer - create expectations, verify requests, and manage mock state

Connects Runs on your computer
Account or key No key needed
Category Other

Install

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

Passed 2/3 checks · Runs on your computer · ✓ Commands checked Nov 14, 2026

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

Let AI install it

Copy this message into a Claude chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCPClientMock for Claude on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "mcpclientmock": { "command": "npx", "args": [ "-y", "mockserver-mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the MCPClientMock tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "mcpclientmock": {
      "command": "npx",
      "args": [
        "-y",
        "mockserver-mcp"
      ]
    }
  }
}

Done

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

2 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

MOCKSERVER_HOST MockServer hostname
MOCKSERVER_PORT MockServer port

Descriptions are as written by the maker.

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

ChatGPT cannot connect MCPClientMock yet

MCPClientMock 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 MCPClientMock

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

B · Others in Other that work with ChatGPT

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

Hostinger✓ ChatGPT
World Monitor✓ ChatGPT
Svelte MCP✓ ChatGPT

Works with Claude Code, with some setup first

Install Node.js on your computer first (one time)

Let AI install it

Copy this message into a Claude Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCPClientMock for Claude Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): claude mcp add --scope user mcpclientmock -- npx -y mockserver-mcp 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the MCPClientMock tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
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 mcpclientmock -- npx -y mockserver-mcp

Done

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

2 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

MOCKSERVER_HOST MockServer hostname
MOCKSERVER_PORT MockServer port

Descriptions are as written by the maker.

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 Node.js on your computer first (one time)

Let AI install it

Copy this message into a Cursor chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCPClientMock for Cursor on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "mcpServers": { "mcpclientmock": { "command": "npx", "args": [ "-y", "mockserver-mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the MCPClientMock tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
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 MCPClientMock and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using MCPClientMock or shows a MCPClientMock tool in the answer, you are connected

2 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

MOCKSERVER_HOST MockServer hostname
MOCKSERVER_PORT MockServer port

Descriptions are as written by the maker.

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 Node.js on your computer first (one time)

Let AI install it

Copy this message into a VS Code chat. The AI checks your computer, tells you which file it will change, and waits for your OK every time.

Please install the MCP server MCPClientMock for VS Code on this computer, in this order: 1) Check Node.js with node -v. If it is missing, tell me to install it from https://nodejs.org/en/download; do not install it yourself. 2) Use only this config (already checked by PopNx MCP): { "servers": { "mcpclientmock": { "type": "stdio", "command": "npx", "args": [ "-y", "mockserver-mcp" ] } } } 3) Tell me the full path of the file you will change, or the command you will run, and wait for my OK. 4) No key is needed. 5) Do what we agreed, then check that the MCPClientMock tools really show up.

This message has no key in it. If a key is needed, the AI will ask you to paste it yourself into the file or the app’s field.

1
Install Node.js (if you don’t have it)
Already installed? Check first · Open Terminal, type this command and press Enter
node -v
- A version number such as v26.13.1 = installed, skip this step
- "command not found" (on Windows: "is not recognized") = not installed yet, or installed but Terminal needs to be closed and reopened
How to open Terminal
Mac: press ⌘ + Space, type Terminal, press Enter
Windows: open Start, type Windows PowerShell, then Open
Not installed: Open the official download page, pick the LTS version and the click-through installer: .pkg on Mac · .msi on Windows. Double-click and follow it to the end. No curl command needed
Open the Node.js download page ↗
When it’s done, close Terminal, open it again and run the same command. You should see a version number: node -v
Install once; it works for everything that needs Node.js
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 MCPClientMock and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using MCPClientMock or shows a MCPClientMock tool in the answer, you are connected

2 optional setting(s) (works without them)

The command above works without these. Add them only if you want to change something, following the maker’s description.

MOCKSERVER_HOST MockServer hostname
MOCKSERVER_PORT MockServer port

Descriptions are as written by the maker.

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 MCPClientMock💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user mcpclientmock -- npx -y mockserver-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "mcpclientmock": {
      "command": "npx",
      "args": [
        "-y",
        "mockserver-mcp"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "mcpclientmock": {
      "command": "npx",
      "args": [
        "-y",
        "mockserver-mcp"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "mcpclientmock": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mockserver-mcp"
      ]
    }
  }
}

Values you fill in

MOCKSERVER_HOST env
MockServer hostname
MOCKSERVER_PORT env
MockServer port

Descriptions are as written by the maker.

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

At a glance

GitHub stars i: 1
Downloads per weeki: 50/wk
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 1.0.2
Categoryi: Other
Published to registryi: Dec 16, 2025
Code last changedi: Dec 17, 2025
Maker: Akkshay10
Packages: npm: mockserver-mcp
Repo: Akkshay10/MCPClientMock
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 15, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account Akkshay10, which owns the repo
! Caution
Still maintained
Code last changed 11 months ago, more than 6 months ago
✓ Pass
Has a licence
Uses MIT
– 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

Published vulnerabilities (OSV.dev)

Not checked yet

What we check → · JSON

Makers: ask for a re-check or report wrong info

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 Otheri

More stars than 86% of the other 19835 servers in this category
Published to the registry more recently than 0% of the other 19835 servers in this category
Basic checks equal to or better than 45% of the other 19835 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 MCPClientMock safe?

It passed 2 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 11 months ago, and the latest version (1.0.2) reached the registry 11 months ago.

Which apps can use it?

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

What can I use instead?

In the same category: World Monitor, openstatus, Oh My Posh Validator, Strata, Jitsu

Similar alternatives

Same category, other makers, commands already checked. Official ones first, then by stars.

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

World Monitor

Real-time global intelligence on conflict, markets, energy, trade, shipping and cyber. 97 tools.

by koala73Widely used★ 90.6KUpdated yesterday

Runs in the cloud✓ service owner · worldmonitor.app

How to connect

openstatus

Manage monitors, status pages, incidents and maintenances in your openstatus workspace.

by openstatusHQWidely used★ 9.3KUpdated 2 months ago

Runs in the cloud✓ service owner · openstatus.dev

How to connect

Oh My Posh Validator

Validate oh-my-posh configurations and segment snippets against the official schema.

by JanDeDobbeleerWidely used★ 23.8K Stars for the whole repoUpdated 26 days ago

Runs in the cloud✓ service owner · ohmyposh.dev

How to connect

Strata

MCP server for progressive tool usage at any scale (see https://klavis.ai)

by Klavis-AIGrowing★ 5.8KUpdated 14 months ago

Runs in the cloudRepo archived✓ klavis.ai

How to connect

Jitsu

Manage Jitsu data pipelines: destinations, streams, connections, functions, live events.

by jitsucomWidely used★ 5.1KUpdated 4 months ago

Runs in the cloud✓ service owner · jitsu.com

How to connect

World Monitor — Runs in the cloud, nothing to install · No key needed
openstatus — Runs in the cloud, nothing to install · No key needed
Oh My Posh Validator — Runs in the cloud, nothing to install · No key needed
Strata — Runs in the cloud, nothing to install · No key needed
Jitsu — Runs in the cloud, nothing to install · No key needed

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-mcp

An MCP (Model Context Protocol) server for interacting with James Bloom's MockServer. This enables AI assistants to create mock HTTP expectations, verify requests, clear state, and manage MockServer instances programmatically.

Prerequisites

You need a running MockServer instance:

# Using Docker (easiest)

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

Installation

Using npx (recommended)

npx mockserver-mcp

Global installation

npm install -g mockserver-mcp

mockserver-mcp

Configuration

Environment Variables

Variable	Description	Default
`MOCKSERVER_HOST`	MockServer hostname	`localhost`
`MOCKSERVER_PORT`	MockServer port	`1080`

MCP Client Configuration

Add to your MCP client configuration file (e.g., Claude Desktop, Kiro, Cursor):

"mcpServers": { "mockserver": { "command": "npx", "args": ["-y", "mockserver-mcp"], "env": { "MOCKSERVER_HOST": "localhost", "MOCKSERVER_PORT": "1080" } } } }

For shared team MockServer, change MOCKSERVER_HOST to your server's address.

Available Tools

mockserver_create_expectation

Create a mock HTTP expectation on MockServer.

Parameters:

httpRequest (required): Request matching criteria
method: HTTP method (GET, POST, PUT, DELETE, etc.)
path: URL path to match
queryStringParameters: Query parameters to match
headers: Headers to match
body: Body matcher with type (STRING, JSON, REGEX, XPATH, JSON_PATH) and value
httpResponse: Response configuration
statusCode: HTTP status code
headers: Response headers
body: Response body (string or object)
delay: Response delay with timeUnit and value
times: How many times to match (remainingTimes, unlimited)
timeToLive: Expectation lifetime (timeUnit, timeToLive)

Example:

"httpRequest": { "method": "GET", "path": "/api/users" }, "httpResponse": { "statusCode": 200, "body": { "users": [] } } }

mockserver_verify

Verify that requests matching criteria were received by MockServer.

Parameters:

httpRequest (required): Request matching criteria (same as create_expectation)
times: Expected request count
atLeast: Minimum number of requests
atMost: Maximum number of requests
exactly: Exact number of requests

Example:

"httpRequest": { "method": "POST", "path": "/api/orders" }, "times": { "atLeast": 1 } }

mockserver_clear

Clear expectations and recorded requests from MockServer.

Parameters:

httpRequest (optional): Request matcher to clear specific expectations. If not provided, clears all.

Example:

"httpRequest": { "path": "/api/users" } }

mockserver_reset

Perform a full reset of MockServer, clearing all expectations and recorded requests.

Parameters: None

mockserver_retrieve_requests

Retrieve recorded requests from MockServer.

Parameters:

httpRequest (optional): Request matcher to filter recorded requests

Example:

"httpRequest": { "method": "GET" } }

mockserver_status

Get MockServer connection status and configuration.

Parameters: None

Why Mocking?

API mocking enables early testing — start building and testing your frontend or integrations before the backend is ready. No more waiting. Ship faster.

Requirements

Node.js >= 18.0.0
A running MockServer instance

License

MIT

MCPClientMock

What it does

Install

Install Node.js (if you don’t have it)

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 Node.js (if you don’t have it)

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js (if you don’t have it)

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js (if you don’t have it)

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

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

Published vulnerabilities (OSV.dev)

Discussion

User reviews

Compared with others in Otheri

Common questions

Similar alternatives

World Monitor

openstatus

Oh My Posh Validator

Strata

Jitsu

README from the maker

mockserver-mcp

Prerequisites

Installation

Using npx (recommended)

Global installation

Configuration

Environment Variables

MCP Client Configuration

Available Tools

mockserver_create_expectation

mockserver_verify

mockserver_clear

mockserver_reset

mockserver_retrieve_requests

mockserver_status

Why Mocking?

Requirements

Links

License