Oauth Auditor MCP server

by 4hmetuyar·io.github.4hmetuyar/oauth-auditor·v0.1.2·1 stars

Scans MCP server auth code for OAuth 2.1 anti-patterns: token passthrough, missing audience

A86/100grade A

What users say

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Safety scan

A86/100

Adoption

Growing

1 stars543 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.

list_patterns
List every OAuth/token-handling pattern this auditor detects, grouped by category
scan_directory
Recursively scan a directory of MCP server source for OAuth/token-handling anti-patterns
scan_file
Scan a single file for OAuth/token-handling anti-patterns
scan_text
Scan an MCP server's authorization code for OAuth 2.1 anti-patterns named in the MCP spec's own Security Considerations: token passthrough (forwarding a client's token to a downstream API unchanged), missing audience validation on JWT verification, OAuth/OIDC discovery SSRF, missing PKCE, loose redirect_uri validation, and hardcoded client secrets.

scanner v0.1.10 · 2026-10-01 · 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 0 days ago15/15
Maintainer identitynamespace and repository owner differ4/10

Overall 86/100. 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-oauth-auditor on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add oauth-auditor -- npx -y @guardbee/mcp-oauth-auditor

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

🇬🇧 English | 🇹🇷 Türkçe | 🇨🇳 中文

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 Oauth Auditor MCP server safe?: Yes, by our scan: it is graded A (86/100). Read the Oauth Auditor safety report
How do I install Oauth Auditor?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Oauth Auditor need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Oauth Auditor maintained?: The last commit was 12 days ago (2026-10-01). The latest release is v0.1.2.
What can I use instead of Oauth Auditor?: Servers from other publishers that do the same job: Oauth Auditor MCP server, Rede MCP server and ThinkReview MCP server. Compare all Oauth Auditor alternatives.

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