unboundcompute/security-agent-skills · skills/auditing-cross-account-role-trust-boundaries/SKILL.md

auditing-cross-account-role-trust-boundaries skillA

auditing-cross-account-role-trust-boundaries is agent-read markdown (skill) from unboundcompute/security-agent-skills: Audit cross-account IAM role assumption for trust policies that let the wrong principal assume a role: a trust policy with a wildcard or overbroad principal, a missing or unverifiable external ID on a third-party role, a confused-deputy path where a vendor assumes your role on any customer's behalf, and a role chain that reaches privileges the origin principal should never hold. Covers AWS assume-role trust policies, condition keys that should scope who may assume, and the transitive reach of on.

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-cross-account-role-trust-boundaries@git:20260827.b5f41a4
Exact content
mdr add unboundcompute/security-agent-skills/auditing-cross-account-role-trust-boundaries@sha256:53c6392d7c6da1b6

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_gh2j4fn2ksr45sek.svg)](https://markdownregistry.com/a/art_gh2j4fn2ksr45sek)

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Versions

versioncommittedcommitsizeaudit
git:20260827.b5f41a4 latest2026-08-27 b5f41a4 9,356 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 (9356 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_gh2j4fn2ksr45sek
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/auditing-cross-account-role-trust-boundaries
GET https://markdownregistry.com/api/v1/blob/53c6392d7c6da1b617109240b02e6baba3b998c78aa53304e0a2f681d594e00d

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