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MCP Server Config Generator for Claude, Cursor and VS Code

For developers adding Model Context Protocol servers to their AI tools. Pick the app and the servers to get the config file in the right shape for that app.

FreeRuns in your browserNothing uploadedNo sign-up neededAll 13 tools in the LLM / AI Toolbox
Keep this resultSign in to email it to yourself or save it to your profile. The tool itself never needs an account.

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How to use

How to use the MCP Config Builder

  1. Choose the app you are configuring.
  2. Add servers from the list: filesystem, fetch, git, memory, time, a remote URL or your own.
  3. Edit commands, arguments, environment variables or headers.
  4. Copy the JSON into the file named above it, or use the claude mcp add commands, then restart the app.
Worked example

An example, step by step

You enter

Claude Desktop with the filesystem server for /home/me/projects and the fetch server

The tool shows

Valid JSON with mcpServers.filesystem (npx -y @modelcontextprotocol/server-filesystem /home/me/projects) and mcpServers.fetch (uvx mcp-server-fetch), plus the matching claude mcp add commands

FAQ

Questions about the MCP Config Builder

Where is the Claude Desktop MCP config file?

Open Settings, then Developer, then Edit Config: it opens claude_desktop_config.json. Restart Claude Desktop after saving.

What is the difference for VS Code?

VS Code uses a servers key in .vscode/mcp.json and a type for each server (stdio or http). The builder writes the right shape for each app.

How do I keep API keys out of the file?

Use environment variable placeholders and set the real values on your machine. The builder warns when a value looks like a real secret.

Is the MCP Config Builder free and private?

Yes. It is free, needs no sign-up and runs entirely in your browser, so what you type is not uploaded. You only sign in if you want to email a result to yourself or save it to your CareerByteCode profile.

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