Fetter MCP

io.github.fetter-io/fetter-mcpVersion 1.0.1

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

Status

Responds367 msNov 14, 2026, 14:51 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://mcp.fetter.io/mcpResponds367 msNov 14, 2026, 14:51 UTC

No sign-in

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

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Settings > Connectors > Add custom connector
Name: fetter-mcp
Remote MCP server URL: https://mcp.fetter.io/mcp

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

code --add-mcp '{"name":"fetter-mcp","type":"http","url":"https://mcp.fetter.io/mcp"}'

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3 tools

Tools of Fetter MCP
	Description		Read-only	Idempotent	Open world
`is_vulnerable`Check if a specific package version has known vulnerabilities. Requires an exact version specifier (e.g., 'requests==2.31.0').	Check if a specific package version has known vulnerabilities. Requires an exact version specifier (e.g., 'requests==2.31.0').	Not declared	Not declared	Not declared	Not declared
`lookup`Look up a package by name and (optionally) version number to find which versions are available and/or have vulnerabilities.	Look up a package by name and (optionally) version number to find which versions are available and/or have vulnerabilities.	Not declared	Not declared	Not declared	Not declared
`most_recent_not_vulnerable`Find the most recent version of a package that has no known vulnerabilities.	Find the most recent version of a package that has no known vulnerabilities.	Not declared	Not declared	Not declared	Not declared

Registry status: Active
Published: Feb 26, 2026
Updated: Feb 26, 2026
Website: https://fetter.io/mcp⁠ (opens in a new tab)
Repository: https://github.com/fetter-io/fetter-mcp⁠ (opens in a new tab)
Categories (suggested): Developer toolsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared