auth-audit skillA
auth-audit is agent-read markdown (skill) from fusengine/agents: Use when auditing JWT, session, OAuth2/PKCE, password, or MFA implementations for security vulnerabilities and best-practice deviations..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260729.3b91eedmdr add fusengine/agents/auth-audit@sha256:c33e7eb595d27e3cPin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_5sclnrmbsmv4b6la)
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Versions
| 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 · 28 stars · license MIT · pushed 2026-09-24 · 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
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