Fetter MCP

Gives your AI agent live access to Python package vulnerability data from PyPI and OSV so it can make safer dependency choices while coding. You get three tools: most_recent_not_vulnerable finds the latest clean release of a package, is_vulnerable checks if a specific pinned version has known CVEs, and lookup shows which versions in a range are affected. The agent calls them automatically when you ask it to add dependencies, audit a requirements file, or pin a version. Responses include CVE IDs, CVSS scores, severity ratings, and links to full advisories. Runs as a remote HTTP server at mcp.fetter.io, so there's nothing to install locally.