Dev Proxy MCP Server
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Dev Proxy MCP Servercreate a configuration to simulate 429 rate limit errors"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Dev Proxy MCP Server
A Model Context Protocol (MCP) server for Dev Proxy that enables AI assistants to interact with Dev Proxy capabilities using the MCP standard. Use this server to:
Create Dev Proxy configurations using natural language
Get contextual help for working with Dev Proxy
Discover Dev Proxy features and capabilities

What is Dev Proxy?
Dev Proxy is an API simulator that helps you effortlessly test your app beyond the happy path. It allows you to:
Test API error handling: See how your app responds to API errors without changing your code
Verify rate limit handling: Simulate API rate limits to improve user experience
Test slow API responses: See how your app handles slow APIs to implement necessary affordances
Create mock APIs: Quickly stand up mock APIs without writing code you won't ship
Dev Proxy works with any type of app and tech stack as it intercepts network requests at the proxy level.
Related MCP server: Azure DevOps MCP Server
What This Package Does
This package provides a Model Context Protocol (MCP) server interface to Dev Proxy. It allows AI assistants and other MCP-compatible clients to:
Find Dev Proxy documentation using natural language queries
Get the installed Dev Proxy version
Prerequisites
Usage
To set up and use the MCP server, refer to the instructions for your MCP host, such as Visual Studio Code. The Dev Proxy MCP server is published on npm under @devproxy/mcp.
Use the following values:
Type:
stdioCommand:
npxArguments:
-y@devproxy/mcp
Environment: none
If you want to test the preview version of the server using@devproxy/mcp@next.
Connect with an MCP Client
This MCP server exposes the following tools:
GetBestPractices
Gets a list of best practices for configuring and using Dev Proxy. Call it for any code generation or operation involving Dev Proxy. These best practices do not change so once it has been called during the current session, you do not need to invoke it again.
_Best practices in markdown_FindDocs
Finds relevant Dev Proxy documentation related to a specific query.
{
"query": "How to simulate API errors"
}GetVersion
Gets the currently installed Dev Proxy version. This is useful to ensure that the generated configuration is compatible with the installed version of Dev Proxy.
{}Development
# Clone the repository
git clone https://github.com/waldekmastykarz/dev-proxy-mcp.git
cd dev-proxy-mcp
# Install dependencies
npm install
# Build the project
npm run build
# Run the server
npm start
# Run with MCP inspector for debugging
npm run inspectContributing
Contributions are welcome! Please feel free to submit a Pull Request.
Fork the repository
Create your feature branch (
git checkout -b feature/amazing-feature)Commit your changes (
git commit -m 'Add some amazing feature')Push to the branch (
git push origin feature/amazing-feature)Open a Pull Request
License
This project is licensed under the MIT License - see the LICENSE file for details.
Related Projects
Dev Proxy - The core Dev Proxy tool
Model Context Protocol (MCP) - Protocol specification for AI assistant tools
This server cannot be deployed
Maintenance
Related MCP Connectors
MCP server that lets AI assistants use all OneSchema features exposed via the public API.
Build, validate, and manage API simulations in WireMock Cloud from MCP-compatible AI agents.
Use AI models for chat, image, and video generation from Claude Code and other MCP hosts.
- QuallaaOAuthcom.quallaa
Talk to your public-facing AI from any MCP client — Claude, ChatGPT, Cursor, Cline, Windsurf.
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