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Free browser tool · Generate a local stdio server configuration

MCP Config Builder

Enter a server name, command, arguments and optional environment variables. Get valid JSON for a common mcpServers configuration shape.

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Your result

Fill the fields and run the tool. Your input stays in this browser session.

Ready when you are.
Problem and result

What this tool does

Enter a server name, command, arguments and optional environment variables. Get valid JSON for a common mcpServers configuration shape.

Example

Example: server name filesystem, command npx, arguments -y and @modelcontextprotocol/server-filesystem, then an allowed folder path.

Method

How to use it

Use the command from the server’s official instructions. Put one argument and one KEY=value variable per line. Generate, inspect and adapt the JSON to your specific client.

Useful for

Drafting local server configs, checking JSON syntax and documenting an MCP setup for a team.

Know the boundary

Limitations

MCP clients differ in config paths and supported fields. This tool does not install, run or verify a server. Avoid pasting credentials into shared devices.

Common questions

FAQ

Will this install an MCP server?

No. It only builds a JSON configuration for you to inspect.

Does every MCP client accept mcpServers?

No. Check your client’s official configuration format and adapt the output when necessary.

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