mcp-audit-proxy

mcp-audit-proxy

A transparent audit proxy for MCP servers. Put it in front of any MCP server and every tool call is recorded — what was called, by whom, with which arguments, and what came back.

npx mcp-audit-proxy run -- npx -y @modelcontextprotocol/server-filesystem /tmp

Or install it so the mcp-audit command is on your PATH:

npm install -g mcp-audit-proxy
mcp-audit run -- npx -y @modelcontextprotocol/server-filesystem /tmp

This package is a thin launcher. The real program is a single Go binary, shipped as a per-platform optional dependency — there is no postinstall download, so npm install --ignore-scripts works normally.

Prefer not to involve npm at all? The binary stands alone:

go install github.com/firatmio/mcp-audit-proxy/cmd/mcp-audit@latest

Full documentation, configuration and the security detectors: https://github.com/firatmio/mcp-audit-proxy