codex-subagent-strategylisted

# Codex Subagent Strategy Codex already knows how to call subagents. This skill creates a short, just-in-time model-routing checkpoint for an explicitly requested delegation. It does not authorize delegation. ## Before The First Spawn 1. Read this skill before dispatching any child. 2. If the user requests no child-model routing or says every child must inherit, omit both `model` and `reasoning_effort` for every spawn and stop here. 3. Honor any explicit per-child model or effort requested by the user. 4. Classify each remaining child and apply the first matching route below. Do not load this skill for conceptual questions about subagents or ordinary tasks where the user did not explicitly request delegation. ## Routes Only implementation workers receive a route from this skill. | Worker task shape | Model | Effort | |---|---|---| | Approved pre-design plus high-coupling integration | `gpt-5.6-sol` | `medium` | | Approved pre-design plus a narrow, fully decided boundary | `gpt-5.6-luna` | `xhigh` | | General coding with a concrete implementation outcome | `gpt-5.6-terra` | `high` | | Anything else | native | native | Evaluate high coupling before the narrow-task route. High coupling includes API or schema contracts, persistence, migrations, concurrency, distributed state, authentication, and multi-stage state machines. A pre-designed task is narrow only when its spawn prompt can cite the approved design and all of these are explicit: - objective and out-of-scope