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Use Codex (OpenAI's codex app-server) as a full agent provider — planning, tool orchestration, MCP tools, server-side history, session resume — alongside or instead of Claude. ChatGPT subscription or
The skill file stays in the publisher's repository.
Paste the copied command in a terminal. It installs this SKILL.md into that agent.
npx skills add nanocoai/nanoclaw --skill add-codex -a cursor -y
Use Codex (OpenAI's codex app-server) as a full agent provider — planning, tool orchestration, MCP tools, server-side history, session resume — alongside or instead of Claude. ChatGPT subscription or OpenAI API key, vault-only via the selected gateway. Per-group via `ncl groups config update --provider codex`. Distinct from using OpenAI as an MCP tool (where Claude remains the planner).
Use Codex (OpenAI's codex app-server) as a full agent provider — planning, tool orchestration, MCP tools, server-side history, session resume — alongside or instead of Claude. ChatGPT subscription or OpenAI API key, vault-only via the selected gateway. Per-group via `ncl groups config update --provider codex`. Distinct from using OpenAI as an MCP tool (where Claude remains the planner).
ncl groups config update --provider codexShortcut:
pnpm exec tsx setup/index.ts --step provider-auth codexperforms this whole install (manifest-driven from the providers branch: files, barrels, CLI manifest entry, image rebuild) plus auth in one command. The steps below are the same operations, for agent-driven or manual application.
NanoClaw selects each group's agent backend from container_configs.provider (default claude). This skill installs the Codex provider: copy the payload from the providers branch, append one import to each of the three provider barrels, add the pinned Codex CLI to the container manifest (container/cli-tools.json), rebuild, then run the vault auth walk-through.
The provider runs codex app-server as a child process speaking JSON-RPC over stdio: native streaming, MCP tools, server-side conversation history (the continuation is a thread id, no on-disk transcript). Credentials are vault-only: The selected gateway serves a sentinel auth.json stub into the container and swaps the real ChatGPT token or API key on the wire — no key in .env, nothing readable in the container.
The mechanical steps under Install carry nc: directive fences: an agent reads the prose and applies them, and a parser can apply them deterministically from the same document. Every directive is idempotent, so the whole skill is safe to re-run; anything a parser can't apply falls back to the prose beside it.
Requires src/project-doc-compose.ts on trunk. If it is missing, stop and tell
the operator to run /update-nanoclaw first.
Check whether the payload is already wired (a prior apply, or a trunk that still carries it). All of these present means installed — skip to Authenticate:
src/providers/codex.ts and src/providers/codex-agents-md.tscontainer/agent-runner/src/providers/codex.ts and codex-app-server.tssetup/providers/codex.ts and both provider-contracts/codex.ts declarations (host and container)import './codex.js'; in the three provider barrels and both contract barrels@openai/codex entry in container/cli-tools.jsonFetch the providers branch and copy the Codex payload into all three trees (additive — overwrite each file, never merge the branch). The host files are the provider contribution + the AGENTS.md spec (composition itself lives in trunk's src/project-doc-compose.ts) + their guards; the container files are the provider runtime (turn loop, JSON-RPC wrapper, native memory SessionStart hook, per-exchange archiver) + their guards; the setup file is the picker entry + vault auth walk-through; container/AGENTS.md is the runtime-contract base the composed AGENTS.md embeds.
src/providers/codex.ts
src/providers/codex-agents-md.ts
src/providers/codex-registration.test.ts
src/providers/codex-host-contribution.test.ts
src/providers/codex-agents-md.test.ts
container/agent-runner/src/providers/codex.ts
container/agent-runner/src/providers/codex-app-server.ts
container/agent-runner/src/providers/exchange-archive.ts
container/agent-runner/src/providers/exchange-archive.test.ts
container/agent-runner/src/providers/codex-registration.test.ts
container/agent-runner/src/providers/codex.factory.test.ts
container/agent-runner/src/providers/codex.turns.test.ts
container/agent-runner/src/providers/codex-app-server.test.ts
container/agent-runner/src/providers/codex-contract-parity.test.ts
container/agent-runner/src/providers/codex.conformance.test.ts
container/agent-runner/src/providers/codex-cli-tools.test.ts
container/agent-runner/src/provider-contracts/codex.ts
setup/providers/codex-registration.test.ts
container/AGENTS.md
Install the bundled Codex authentication hook alongside the registry payload. This keeps the same login choices while delegating custody to the selected gateway, and preserves the hook when a provider refresh copies registry files again. These two files are omitted from the registry copy so refresh stays idempotent. The setup screens and step sequence do not change.
payload/src/provider-contracts/codex.ts -> src/provider-contracts/codex.ts
payload/setup/providers/codex.ts -> setup/providers/codex.ts
payload/setup/providers/codex.test.ts -> setup/providers/codex.test.ts
Append the self-registration import to each provider and contract barrel (skipped if already present).
import './codex.js';
import './codex.js';
import './codex.js';
import './codex.js';
import './codex.js';
The agent's global Node CLIs install from container/cli-tools.json (a json-merge seam), not hand-edited Dockerfile layers. Add Codex by appending one entry — idempotent on name, so a re-run is a no-op. @openai/codex has no native postinstall, so no onlyBuilt. The Dockerfile already installs every manifest entry via pinned pnpm install -g; no Dockerfile edit is needed.
{ "name": "@openai/codex", "version": "0.162.1" }
The version (0.162.1) is the canonical pin — this SKILL.md is the source of truth.
pnpm run build
pnpm exec tsc -p container/agent-runner/tsconfig.json --noEmit
./container/build.sh
pnpm exec tsx scripts/provider-contract-verifier.ts --required-declared codex
The registration tests import only the real barrels — they go red if a barrel line is missing, a barrel fails to evaluate, or the payload is broken.
pnpm exec tsx setup/index.ts --step provider-auth codex
The same walk-through fresh installs get from the setup picker: ChatGPT subscription (browser login or device pairing) or an OpenAI API key, landed in the selected gateway’s vault. Idempotent — it short-circuits when a matching secret already exists. It finishes with the install check.
Per group:
ncl groups config update --id <group-id> --provider codex
ncl groups restart --id <group-id>
Switching is an operator action — run it from the host. Every provider uses the
same memory/ tree, so memory carries across automatically. Run
/migrate-memory only when upgrading a group that still has legacy .seed.md,
CLAUDE.local.md, or unindexed imported memory. See
docs/provider-migration.md.
New groups are created on the instance default (DEFAULT_AGENT_PROVIDER in .env, or claude when unset). Installing this skill wires codex in but does NOT change that default — "installed" is not "authenticated", so the default stays claude until you opt in explicitly.
After install, ask the operator before flipping it:
"Codex is installed. Default new agent groups to codex? Existing groups keep their current provider."
On yes — set it, then restart the host so it takes effect:
pnpm exec tsx setup/index.ts --step set-env -- --key DEFAULT_AGENT_PROVIDER --value codex
launchctl kickstart -k gui/$(id -u)/com.nanoclaw # macOS; Linux: systemctl --user restart nanoclaw
This affects only groups created afterward. Per-group ncl groups config update --provider still overrides the default in either direction. Creation itself stays provider-agnostic (no --provider flag — provider is a DB property stamped from the instance default at creation).
grep 'Container exited non-zero' logs/nanoclaw.error.log — the stderrTail carries the reason (e.g. Unknown provider: codex. Registered: claude means the barrels aren't wired in the running build).Error: spawn codex ENOENT on every message: the image predates the manifest entry — re-run ./container/build.sh.pnpm exec tsx setup/index.ts --step provider-auth codex (subscription re-login updates the vault copy).