Codex Framework SKILL.md skillA
Codex Framework from nxtg-ai/forge-plugin is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nxtg-ai/forge-plugin/Codex Framework@git:20260714.4fd0952Pins git:20260714.4fd0952 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nxtg-ai/forge-plugin
- Path
plugins/nxtg-forge/skills/codex-framework/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260714.4fd0952, committed Jul 14, 2026
- First version recorded
- Feb 7, 2026
- Size
- 6,824 bytes
- Repository stars
- 6
- License
- MIT
Reference knowledge for OpenAI Codex CLI compatibility — how Codex discovers AGENTS.md instructions and .agents/skills so a Forge (Claude Code) project can interoperate with Codex without duplicating agent definitions. Use when a user asks to "add Codex support", make the repo "work with Codex CLI" / "work with both Claude Code and Codex", share governance state between the two tools, or when comparing AGENTS.md vs CLAUDE.md discovery. REFERENCE ONLY — never auto-creates AGENTS.md or .agents/…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Codex CLI — Reference Knowledge > **REFERENCE ONLY.** Do NOT create `AGENTS.md`, `AGENTS.override.md`, `SKILLS.md`, or `.agents/` > on your own initiative. NXTG-Forge delivers agents and skills through the **Claude Code plugin** > system, not Codex-style files. Only scaffold Codex files when the user **explicitly** asks to add > Codex support (see the worked example below). ## How Codex CLI discovers instructions (AGENTS.md) Codex builds one instruction chain per run by **concatenating** files from two layers, joined by blank lines — it does NOT pick a single "winning" file: 1. **Home layer** (`~/.codex`, or `$CODEX_HOME`): reads `AGENTS.override.md` if present, else `AGENTS.md`. First non-empty file at this level only. 2. **Project layer**: from the project root (usually the git root) walking **down** to the current working directory, in each directory it takes at most one of: `AGENTS.override.md`, then `AGENTS.md`, then any name in `project_doc_fallback_filenames` (config-driven). All matched files are concatenated root-first. A nested `AGENTS.md` in a subdirectory **adds to** (does not replace) the root one — closer files …
Read the whole file at its exact version.
How to install
mdr add nxtg-ai/forge-plugin/Codex Framework@sha256:7546640d17ca5ec7The line at the top of this page pins the label git:20260714.4fd0952, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_ogexq627c52dhieu)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Feb 7, 2026 and Jul 14, 2026, about one every 52 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260714.4fd0952 latest | 2026-07-14 | 4fd0952 | 6,824 B | A | view · diff |
| git:20260714.061716b | 2026-07-14 | 061716b | 3,170 B | A | view · diff |
| git:20260209.1d311b4 | 2026-02-09 | 1d311b4 | 3,139 B | A | view · diff |
| git:20260207.88c1f6e | 2026-02-07 | 88c1f6e | 9,882 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 (6824 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
nxtg-ai/forge-plugin · 6 stars · license MIT · pushed 2026-10-15 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ogexq627c52dhieu GET https://markdownregistry.com/api/v1/resolve?ref=nxtg-ai/forge-plugin/Codex Framework GET https://markdownregistry.com/api/v1/blob/7546640d17ca5ec7333ac01bb74c1276e3ed0399e8896160aca6e81b813cf7f0
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.