Missing Auth Detection

by utkusen

Missing Auth Detection is a Quality skill for Claude Code, published by utkusen in sast-skills.

1.3K stars61 forkson utkusen/sast-skillsAdded 2026/07/20Repository updated 2026/04/08

View source on GitHub Download repo ZIP

ai-securityclaudeclaude-codesast

Install in seconds

Install Missing Auth Detection

Copy Missing Auth Detection into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/utkusen/sast-skills/tree/main/sast-files/.agents/skills/sast-missingauth ~/.claude/skills/sast-missingauth

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/utkusen/sast-skills.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: sast-files/.agents/skills/sast-missingauth/SKILL.md in utkusen/sast-skills
Installs to: ~/.claude/skills/sast-missingauth
Collection: One of 17 skills cataloged from this repository
Category: Quality — 1897 skills

What Missing Auth Detection does

Detects missing authentication and broken function-level authorization vulnerabilities via a three-phase recon-batch-merge approach. Use when asked to find unauthenticated endpoints or vertical privilege escalation bugs.

Missing Auth Detection is cataloged under Quality on DirSkills. Missing Auth Detection comes from a repository tagged ai-security, claude, claude-code and sast.

Documentation

README

Excerpt

Missing Authentication & Broken Function-Level Authorization Detection

You are performing a focused security assessment to find missing authentication and broken function-level authorization vulnerabilities in a codebase. This skill uses a three-phase approach with subagents: recon (map endpoints and the permission system), batched verify (check authentication and authorization in parallel batches of 3 endpoints each), and merge (consolidate batch results into the final report).

Prerequisites: sast/architecture.md must exist. Run the analysis skill first if it doesn't.

What This Skill Covers

Missing Authentication

An endpoint performs a sensitive action but requires no login at all — any anonymous HTTP request can trigger it.

This is the opening of the README. Read the full README on GitHub.

Commands Missing Auth Detection provides

Slash commands named in this skill’s SKILL.md, listed in the order they first appear.

/admin
/management
/internal
/superadmin
/system
/ops
/health
/ping
/status
/path

Frequently asked about Missing Auth Detection

What else does utkusen publish alongside Missing Auth Detection?
Missing Auth Detection is one of 17 skills that DirSkills catalogs from utkusen/sast-skills, the repository it ships in. Its siblings there include Business Logic Vulnerability Detection, Cross-Site Scripting Detection and GraphQL Injection Detection. Each one is a separate skill with its own page in this directory, installs the same way Missing Auth Detection does, and is maintained by utkusen in that same repository. The rest of the collection is listed on the utkusen/sast-skills page.
How does Missing Auth Detection compare to other Quality skills?
Missing Auth Detection ranks #718 by stars among the 1897 Quality skills in this catalog. The most-starred ones next to it are Benchmark, Benchmark Optimization Loop and API Design Patterns. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of Missing Auth Detection against them. Open each page to compare what they document and how they install.