What is go-appsec/toolbox?

MCP server for AI security testing: proxy traffic, replay/mutate requests, JWT/cookie tools. Pairs with Claude for collaborative pentests.

How to find OAuth2 bugs like this?

Proxy browser traffic via toolbox, capture flows, let Claude replay/modify. No pentest experience needed.

Does spec compliance mean secure OAuth?

No—passes conformance but misses auth leaks, PKCE skips. Use dynamic tools for flows.

🤖 AI Dev Tools

Builder's OAuth2 Fortress Crumbles: 5 Bugs Found in Minutes with an AI-Powered MCP Tool

You think your OAuth2 setup is ironclad? One dev did—until a new MCP tool and Claude ripped it apart, finding five bugs on first try. Spec compliance? Not security.

theAIcatchup Apr 09, 2026 3 min read

Developer discovering 5 security vulnerabilities in OAuth2 provider using go-appsec toolbox and Claude AI

⚡ Key Takeaways

Spec compliance ≠ security; ZAP misses OAuth nuances. 𝕏
go-appsec/toolbox + Claude finds real bugs fast, no expertise needed. 𝕏
AI-human pentest rising—expect more disclosures in IdPs. 𝕏

Published by

theAIcatchup

Ship faster. Build smarter.

#AI pentesting #Claude AI #Claude Code #MCP Tools #MCP toolbox #OAuth2 security #appsec testing #go-appsec toolbox

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Originally reported by dev.to

⚡ Key Takeaways

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