auth-audit SKILL.md skillA
auth-audit from fusengine/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add fusengine/agents/auth-audit@git:20260729.3b91eedPins git:20260729.3b91eed in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- fusengine/agents
- Path
plugins/security-expert/skills/auth-audit/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260729.3b91eed, committed Jul 29, 2026
- First version recorded
- Feb 21, 2026
- Size
- 2,175 bytes
- Repository stars
- 36
- License
- MIT
Use when auditing JWT, session, OAuth2/PKCE, password, or MFA implementations for security vulnerabilities and best-practice deviations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
<objective> This skill audits authentication and authorization implementations end to end: JWT signing algorithm, expiration, refresh, and storage; session storage, expiry, regeneration, and fixation; OAuth2 PKCE, state parameter, and redirect validation; password hashing algorithm, strength rules, and reset flow; and MFA implementation, backup codes, and recovery. It runs a fixed workflow — detect the auth implementation, scan for known anti-patterns, verify cryptographic choices, check token/session lifecycle, and audit authorization logic (RBAC/ABAC) — checking for vulnerabilities such as JWT signed with `none`, undersized JWT secrets, missing/too-long token expiration, refresh tokens in localStorage, session fixation, missing CSRF protection, and OAuth flows missing PKCE or the `state` parameter. </objective> # Auth Audit Skill ## Overview Comprehensive audit of authentication and authorization implementations. ## Audit Categories | Category | Checks | |----------|--------| | JWT | Signing algo, expiration, refresh, storage | | Sessions | Storage, expiry, regeneration, fixation | | OAuth2 | PKCE, state param, redirect validation | …
Read the whole file at its exact version.
How to install
mdr add fusengine/agents/auth-audit@sha256:c33e7eb595d27e3cThe line at the top of this page pins the label git:20260729.3b91eed, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_5sclnrmbsmv4b6la)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 21, 2026 and Jul 29, 2026, about one every 53 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260729.3b91eed latest | 2026-07-29 | 3b91eed | 2,175 B | A | view · diff |
| git:20260705.ba8ee52 | 2026-07-05 | ba8ee52 | 1,472 B | A | view · diff |
| git:20260705.8c2f9bc | 2026-07-05 | 8c2f9bc | 1,470 B | A | view · diff |
| git:20260221.ef8fc89 | 2026-02-21 | ef8fc89 | 1,361 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2175 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fusengine/agents · 36 stars · license MIT · pushed 2026-10-30 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5sclnrmbsmv4b6la GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/auth-audit GET https://markdownregistry.com/api/v1/blob/c33e7eb595d27e3c348c0faa891c725f82f8d148c76d68a8335524f5cbaac86c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.