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My-Brain-Is-Full-Crew/references/codex-cli-compat.md
Arpit Behera 18fc58c398 feat: add Codex CLI as a first-class fourth platform (#35)
Rebuilt from scratch following Codex CLI's actual architecture (as
outlined in the review on PR #26). Closes the integration gap with a
proper build adapter, correct install paths, TOML agent files, and
all the architectural differences documented and tested.

What changed vs the previous attempt (PR #26):

- Agents: build adapter generates .toml files (name/description/
  developer_instructions) into dist/codex-cli/.codex/agents/ instead
  of copying .md files with sed transforms
- Skills: installed to .agents/skills/ (correct Codex discovery path)
  instead of .codex/skills/
- Dispatcher: AGENTS.md uses a root-context orchestration header that
  works within agents.max_depth=1 constraints; named-agent routing
  replaced with embedded-instructions workaround for the known
  spawn_agents limitation (openai/codex#15250)
- Tool compat: AskUserQuestion and request_user_input removed; all
  prompts adapted to Codex's actual tool set and approval/confirmation
  flow
- Installer/updater: launchme.sh --platform codex-cli and updateme.sh
  with Codex auto-detection, creating the correct split layout
  (AGENTS.md + .codex/agents/ + .codex/config.toml + .agents/skills/)
- Tests: new per-adapter test suite (tests/adapters/codex-cli/),
  install/update smoke (tests/scripts/codex-cli-install.test.sh), and
  a four-platform parity gate that proves Codex changes do not regress
  Claude Code, Gemini CLI, or OpenCode
- Docs: new codex-cli.md guide, codex-migration.md for users switching
  from other platforms, and README/getting-started/examples updated for
  four-platform positioning
- Bash harness: .gitattributes added to enforce LF on .sh files;
  harness LF-normalized so tests/run.sh works on Windows checkouts
- .gitignore: .planning/ added (internal GSD workflow artifacts)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-04-12 21:26:56 +02:00

2.1 KiB

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Codex CLI Compatibility Guide

Use this reference when source workflows mention platform-specific tools or recursion rules that do not map 1:1 to Codex CLI.

Source concept Codex CLI mapping Notes
AskUserQuestion Ask a direct plain-text question in chat and wait for the reply Codex uses the root conversation for confirmations and follow-up questions.
request_user_input Ask a direct plain-text question in chat and wait for the reply Use the same root-thread confirmation flow as any other user interaction.
Skill tool Follow the relevant skill instructions directly in the root context Skills stay in the main chat; do not invent a separate Skill API.
Agent tool Use spawn_agent only for bounded child tasks The root context keeps orchestration and integration decisions.
max chain depth 3 agents.max_depth = 1 with root-only orchestration A child can finish one bounded task; any next step is decided back in the root context.
.mcp.json .codex/config.toml Codex MCP and profile settings live in the TOML config.

Flattened Workflow Example

Source workflow wording:

  1. Call AskUserQuestion for confirmation.
  2. Use the Skill tool for the setup flow.
  3. Use the Agent tool for a follow-up task.

Codex CLI wording:

  1. Ask the user directly in chat and wait for the reply.
  2. Keep the setup flow in the root context by following the skill instructions directly.
  3. If a bounded side task remains, use spawn_agent, then return to the root context to decide what happens next.

Troubleshooting

  • Child approvals surface in the child thread. Approve or deny there, then continue orchestration from the root context after the child returns.
  • If a task would require deeper recursion, stop spawning children and flatten the next step into the root context or split the work into separate bounded child tasks.
  • Codex custom agents live in .codex/agents/*.toml.
  • Repo-scoped Codex skills live in .agents/skills/.
  • MCP servers, approval policy, sandbox mode, and profiles live in .codex/config.toml.