4000288dac
The verbose action-to-tool tables and skill-loading explainers in the per-harness reference files restated guidance modern agents already follow. Trim each file to the harness-specific notes that still carry weight (subagent dispatch, task tracking, instructions-file paths), and delete claude-code-tools.md and copilot-tools.md, which had nothing left that wasn't generic.
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Subagent dispatch requires multi-agent support
Add to your Codex config (~/.codex/config.toml):
[features]
multi_agent = true
This enables spawn_agent, wait_agent, and close_agent for skills like dispatching-parallel-agents and subagent-driven-development. When using subagent-driven-development, you should always close implementer and reviewer subagents when they have finished all their work.
Environment Detection
Skills that create worktrees or finish branches should detect their environment with read-only git commands before proceeding:
GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
BRANCH=$(git branch --show-current)
GIT_DIR != GIT_COMMON→ already in a linked worktree (skip creation)BRANCHempty → detached HEAD (cannot branch/push/PR from sandbox)
See using-git-worktrees Step 0 and finishing-a-development-branch
Step 1 for how each skill uses these signals.
Codex App Finishing
When the sandbox blocks branch/push operations (detached HEAD in an externally managed worktree), the agent commits all work and informs the user to use the App's native controls:
- "Create branch" — names the branch, then commit/push/PR via App UI
- "Hand off to local" — transfers work to the user's local checkout
The agent can still run tests, stage files, and output suggested branch names, commit messages, and PR descriptions for the user to copy.