codex skillA
codex is agent-read markdown (skill) from majiayu000/spellbook: Use when the user asks to run Codex CLI (codex exec, codex resume) or references OpenAI Codex for code analysis, refactoring, or automated editing.
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
mdr add majiayu000/spellbook/codex@git:20260830.5b9004fmdr add majiayu000/spellbook/codex@sha256:9ed445e66c0a9262Pin 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_hbe3ela7oir5io3s)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260830.5b9004f latest | 2026-08-30 | 5b9004f | 8,297 B | A | view · diff |
| git:20260619.9f35213 | 2026-06-19 | 9f35213 | 4,616 B | A | view · diff |
| git:20260613.c4ca4e6 | 2026-06-13 | c4ca4e6 | 4,575 B | A | view · diff |
| git:20260612.ec5e0c4 | 2026-06-12 | ec5e0c4 | 4,562 B | A | view · diff |
| git:20260610.de062df | 2026-06-10 | de062df | 4,599 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 (8297 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
majiayu000/spellbook · 275 stars · license MIT · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hbe3ela7oir5io3s GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/codex GET https://markdownregistry.com/api/v1/blob/9ed445e66c0a9262be4400ea46292487dc58ec38cf695267f7c964ea3e0f7cf0