Setup Pstack

Set up pstack on Codex

Write the optional Codex pstack model configuration at ~/.codex/pstack-models.md. Skills that support model routing read this exact path. Codex custom agents are installed separately under ~/.codex/agents/ or .codex/agents/; do not edit [agents] role declarations or another host's files.

Configure

1. Inspect the active subagent tool schema for model values Codex accepts. Do not infer availability from documentation or memory. If the tool does not expose a dependable set, use inherit-parent.
2. Read the existing file when present. Treat it as the current state.
3. Ask the user only about values that cannot be preserved or inferred. Use Codex's structured-question tool when available.
4. Write the complete file atomically and idempotently. Every configured model must be accepted by the active subagent tool; inherit-parent means omit the model override.

Use this shape:

# pstack model configuration for Codex

fast code model: <model-or-inherit-parent>
precise-execution model: <model-or-inherit-parent>
judgment model: <model-or-inherit-parent>

how explorer: <model-or-inherit-parent>
how explainer: <model-or-inherit-parent>
how critics: <comma-separated-models>
why investigators: <model-or-inherit-parent>
why synthesizer: <model-or-inherit-parent>
reflect tooling: <model-or-inherit-parent>
reflect judgment, divergent, synthesizer: <model-or-inherit-parent>
arena runners: <comma-separated-models>
arena cross-judge pool: <comma-separated-models>
swarm workers: <model-or-inherit-parent>
architect runners: <comma-separated-models>
interrogate reviewers: <comma-separated-models>

Do not add an AGENTS.md pointer. Codex pstack skills name this file directly. Report the path written and note that a new session is required only when custom agent TOML files changed, not when this Markdown file changed.