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/ files.
$npx -y skills add nxtg-ai/forge-plugin --skill codex-frameworkInstalls into the current project.
Run `npx skills use "https://github.com/nxtg-ai/forge-plugin" --skill "nxtg-ai/forge-plugin/codex-framework"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/nxtg-ai/forge-plugin" that are relevant to the current task. Run `npx skills add "https://github.com/nxtg-ai/forge-plugin"` and select the relevant skills, then follow their instructions.