Toxic Flow Auditor MCP server

by GuardBee·io.github.GuardBee/toxic-flow-auditor·v0.1.15·1 stars

Finds lethal-trifecta toxic flows in MCP tool catalogs: untrusted input, sensitive data, egress

A91/100grade A

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Safety scan

A91/100

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Growing

1 stars1.9k downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

audit_catalog
Audit a tools/list-shaped JSON catalog for the lethal trifecta (toxic flow): untrusted content + sensitive/private data + exfiltration or destruction on the same MCP server. Returns an A–F grade.
explain_trifecta
Explain the lethal trifecta / toxic-flow model this auditor uses
scan_directory
Recursively scan a directory of MCP server source for toxic flows across all registered tools
scan_file
Scan a single source file for toxic flows
scan_source
Scan TypeScript/JavaScript MCP server source for .tool(...) registrations and audit them for toxic flows

scanner v0.1.10 · 2026-10-13 · same rubric, same numbers if you re-run it

no findings

Code scan15 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 1 days ago15/15
Maintainer identityregistry namespace matches repository owner7/10

Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

Runs npx -y @guardbee/mcp-toxic-flow-auditor on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add toxic-flow-auditor -- npx -y @guardbee/mcp-toxic-flow-auditor

From the Toxic Flow Auditor repository's README, as published. We do not edit it. Read it on GitHub

guardbee.ai — AI Security Copilot for websites.

GuardBee's family of MCP (Model Context Protocol) servers — a single monorepo, independent npm packages.

Nothing above is checked by us. What we check is on the safety report.

Is Toxic Flow Auditor MCP server safe?: Yes, by our scan: it is graded A (91/100). Read the Toxic Flow Auditor safety report
How do I install Toxic Flow Auditor?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Toxic Flow Auditor need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Toxic Flow Auditor maintained?: The last commit was 2 days ago (2026-10-11). The latest release is v0.1.15.