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Auth Flow Reviewer

Category: Security  ·  Sub-category: web-security  ·  Last updated:
type:review
Read-only review of authentication AND authorization flows — session/token model, cookie flags, CSRF, token rotation, password-reset/email-verification, OAuth redirect/state, and per-route object-level access checks — for exploitable gaps. Use before shipping login/session/token code, when adding a protected route or sharing-by-URL feature, or during a security pass. Reports findings by severity with location, impact, and the concrete fix; never edits code.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Review authentication and authorization code for exploitable gaps without touching a line of it. The skill walks the session/token model, cookie flags, CSRF defenses, token lifecycle, password-reset and email-verification flows, and OAuth parameter validation — then spends most of its effort on the part teams routinely skip: confirming that every protected route enforces an object-level access check. A login form that works tells you nothing about whether user A can read user B's invoice by editing an ID. Output is a findings list grouped by severity, each with a location, the concrete…

What this skill does

Auth Flow Reviewer is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/auth-flow-reviewer/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Auth Flow Reviewer Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 154,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/auth-flow-reviewer
curl -L https://claudskills.com/skills/auth-flow-reviewer/SKILL.md \
  -o ~/.claude/skills/auth-flow-reviewer/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/auth-flow-reviewer/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/auth-flow-reviewer/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\auth-flow-reviewer\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Auth Flow Reviewer Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/auth-flow-reviewer/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Auth Flow Reviewer skill do?
Read-only review of authentication AND authorization flows — session/token model, cookie flags, CSRF, token rotation, password-reset/email-verification, OAuth redirect/state, and per-route object-level access checks — for exploitable gaps. Use before shipping login/session/token code, when adding a protected route or sharing-by-URL feature, or during a security pass. Reports findings by severity with location, impact, and the concrete fix; never edits code.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Auth Flow Reviewer skill?
Use Auth Flow Reviewer when your Claude Code task falls under the Security category — specifically in the web security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Auth Flow Reviewer" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Auth Flow Reviewer skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Auth Flow Reviewer is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
imtiazrayhan. (2026). Auth Flow Reviewer [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/auth-flow-reviewer/
BibTeX
@misc{auth-flow-reviewer-2026,
  author    = {imtiazrayhan},
  title     = {Auth Flow Reviewer [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/auth-flow-reviewer/}
}

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Security scan

Grade A · scanned 2026-07-19 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

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[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/auth-flow-reviewer/#security)

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Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
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