majiayu000/spellbook · skills/codex-agent/SKILL.md

codex-agent skillA

codex-agent is agent-read markdown (skill) from majiayu000/spellbook: Use when you want a second-opinion review via Codex CLI, cross-verification after another agent implements changes, debugging help, or alternative implementation proposals. Requires Codex CLI to be installed and authenticated..

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 majiayu000/spellbook/codex-agent@git:20260619.9f35213
Exact content
mdr add majiayu000/spellbook/codex-agent@sha256:2d485f33a824280a

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_l6xbebjf7w7a6abz.svg)](https://markdownregistry.com/a/art_l6xbebjf7w7a6abz)

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Versions

versioncommittedcommitsizeaudit
git:20260619.9f35213 latest2026-06-19 9f35213 7,593 BA view · diff
git:20260610.de062df2026-06-10 de062df 7,552 BA view · diff
git:20260605.a09e45c2026-06-05 a09e45c 5,880 BA view · diff
git:20260530.1e1fca02026-05-30 1e1fca0 5,691 BA view · diff
git:20260115.112b20c2026-01-15 112b20c 5,588 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 (7593 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

majiayu000/spellbook · 280 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_l6xbebjf7w7a6abz
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/codex-agent
GET https://markdownregistry.com/api/v1/blob/2d485f33a824280ae5c7d34771e615744f13f0fa9d9ef86df2694eccfa5557a7

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