How do I connect Fast MCP Server to Claude?

Run `claude mcp add punkpeye-fastmcp -- npx -y fastmcp dev src/examples/addition.ts` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.

Is Fast MCP Server free?

The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.

What can Fast MCP Server do?

Fast MCP Server documents 9 tools to the agent, including buffer, destructiveHint, idempotentHint. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.

Fastmcp

Unclaimed

by punkpeye

A TypeScript framework for building MCP servers.

Set up this server

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01 / Choose your client

02 / Before you connect

Authentication is not specified. Check the project instructions before connecting.

Install the runtime required by the project and make it available to your client.

Project instructionsEnvironment variable names (optional)

Use names from the project instructions, separated by commas. Enter names only, never secret values.

03 / Add the configuration

Source: generated from public install instructions

claude mcp add --transport stdio 'punkpeye-fastmcp' -- 'npx' '-y' 'fastmcp' 'dev' 'src/examples/addition.ts'

Run in your terminal after replacing any placeholders.

04 / Check it in your client

Open your client’s MCP settings and confirm the server connects and lists its tools. A copied configuration does not confirm a working connection.

mcpsse

Is this your MCP server?

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Security profile

Claimed and verified servers get a weekly static scan that shows what the code can reach: external services, environment variables, shell commands, agent configuration folders, plus any dependencies with known advisories. Claim this listing to get one. How the security profile works

9 of 9 tools

Documented tools (9)

From project documentation. A server handshake does not verify each tool’s description or behavior.

buffer

The image data as a buffer.

destructiveHint

boolean

idempotentHint

boolean

openWorldHint

boolean

path

The path to the image file.

readOnlyHint

boolean

timeoutMs

Optional timeout for a URL download in milliseconds (defaults to 30 seconds).

title

string

url

The URL of the image.

Tool change history

Compared across complete checks of the same configuration. Tools were listed, not invoked. Input-schema changes are not measured here.

No complete tool checks yet.

FAQ

Questions about Fast MCP Server

How do I connect Fast MCP Server to Claude?: Run `claude mcp add punkpeye-fastmcp -- npx -y fastmcp dev src/examples/addition.ts` in Claude Code, or add the same command and arguments under mcpServers in Cursor's mcp.json or Claude Desktop's claude_desktop_config.json, then restart the client. The blocks above are ready to paste.
Is Fast MCP Server free?: The listed licence is MIT. Check the upstream terms for permitted use and commercial requirements; a public repository does not by itself mean the software is free or open source. Connected APIs and hosted services may have separate charges.
What can Fast MCP Server do?: Fast MCP Server documents 9 tools to the agent, including buffer, destructiveHint, idempotentHint. The descriptions above come from project documentation. A live handshake does not test individual tool behavior.