unboundcompute/security-agent-skills · skills/auditing-jwt-verification-trust/SKILL.md

auditing-jwt-verification-trust skillA

auditing-jwt-verification-trust is agent-read markdown (skill) from unboundcompute/security-agent-skills: Audit code that verifies a JSON Web Token for a signature or claims check that trusts token-supplied parameters, so an attacker can forge a token the server accepts, after the algorithm pinning and the key source are resolved. Covers an algorithm taken from the token header rather than pinned server-side, an RS256-to-HS256 key confusion where a public key is used as an HMAC secret, an accepted none algorithm or a verification call with signature checking off, a kid, jku, or x5u parameter sourcin.

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.

How to install

Latest version
mdr add unboundcompute/security-agent-skills/auditing-jwt-verification-trust@git:20260825.70f8609
Exact content
mdr add unboundcompute/security-agent-skills/auditing-jwt-verification-trust@sha256:88e20dd1797f10b2

Pin 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_fshrlz5rk6rsenso.svg)](https://markdownregistry.com/a/art_fshrlz5rk6rsenso)

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Versions

versioncommittedcommitsizeaudit
git:20260825.70f8609 latest2026-08-25 70f8609 9,967 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (9967 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

GitHub

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_fshrlz5rk6rsenso
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-jwt-verification-trust
GET https://markdownregistry.com/api/v1/blob/88e20dd1797f10b208620bd7a75e5886894f907ce64737acfa293061abd4527b

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.