MCP server

Fetter MCP Official

io.github.fetter-io/fetter-mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Real-time Python package and vulnerability data for AI coding agents.

Website Source

At a glance

Type

MCP server

Publisher

fetter.io (verified by the MCP Registry)

Status

Working at last check

Tools

3

Token cost

About 577 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http fetter-mcp https://mcp.fetter.io/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.fetter-mcp]
url = "https://mcp.fetter.io/mcp"

Gemini CLI

{"mcpServers":{"fetter-mcp":{"httpUrl":"https://mcp.fetter.io/mcp"}}}

Cursor

{"mcpServers":{"fetter-mcp":{"url":"https://mcp.fetter.io/mcp"}}}

VS Code

{"servers":{"fetter-mcp":{"type":"http","url":"https://mcp.fetter.io/mcp"}}}

Antigravity

agy mcp add fetter-mcp https://mcp.fetter.io/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"fetter-mcp","server_url":"https://mcp.fetter.io/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"fetter-mcp","server_url":"https://mcp.fetter.io/mcp"}

Tools

• is_vulnerable ~127 tokens
  Check if a specific package version has known vulnerabilities. Requires an exact version specifier (e.g., 'requests==2.31.0').
• lookup ~334 tokens
  Look up a package by name and (optionally) version number to find which versions are available and/or have vulnerabilities.
• most_recent_not_vulnerable ~116 tokens
  Find the most recent version of a package that has no known vulnerabilities.

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