OpenAI Codex

{
  "schemaVersion": 1,
  "id": "codex",
  "vendor": "OpenAI Codex",
  "status": "implemented",
  "entrypoint": "AGENTS.md",
  "sharedInstructions": [
    "AGENTS.md"
  ],
  "notes": [
    "Codex reads AGENTS.md, which is itself the vendor-neutral instruction document for this repository.",
    "The entrypoint and the shared document coincide here; no Codex-specific architecture exists.",
    "Nested projects keep their own AGENTS.md or CLAUDE.md, which apply when working inside them."
  ]
}