jkheadley/instar · skills/agent-passport/SKILL.md

agent-passport skillA

agent-passport is agent-read markdown (skill) from jkheadley/instar: View this agent's digital passport (identity + trust + allowed/forbidden actions) and verify a peer's passport against a proposed action (EXO 3.0)..

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 jkheadley/instar/agent-passport@git:20260606.972e9ab
Exact content
mdr add jkheadley/instar/agent-passport@sha256:c5d810e0d3eeb345

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_zu4yc7m72nu3h4ro.svg)](https://markdownregistry.com/a/art_zu4yc7m72nu3h4ro)

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Versions

versioncommittedcommitsizeaudit
git:20260606.972e9ab latest2026-06-06 972e9ab 1,781 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 (1781 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

jkheadley/instar · 77 stars · license MIT · pushed 2026-09-06 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zu4yc7m72nu3h4ro
GET https://markdownregistry.com/api/v1/resolve?ref=jkheadley/instar/agent-passport
GET https://markdownregistry.com/api/v1/blob/c5d810e0d3eeb345a294b2548480bbac84be9d7254291d174f2cd9f01835c2cb