# Executor Advisor > Coordinate a single-controller Executor-Advisor workflow in Codex. Keep the root task as the sole executor and consult at most one read-only `advisor` custom subagent per logical task at high-value planning, recovery, and final-review checkpoints. Use for long-horizon or high-risk coding, research, architecture, debugging, concurrency, security, performance, and review tasks where a second opinion can materially improve the result; skip routine or directly verifiable work. - Skill: `chungyileong/executor-advisor` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add chungyileong/executor-advisor` - Raw SKILL.md: https://api.skillmd.com/api/skills/chungyileong/executor-advisor/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Security - Author: chungyileong (https://skillmd.com/u/chungyileong) - Updated: 2026-09-22 - Page: https://skillmd.com/skills/chungyileong/executor-advisor --- # Executor Advisor ## Keep one controller - Keep the current root task as the executor. It owns the user conversation, decisions, edits, commands, tests, and final response. - Use at most one active `advisor` per logical task for analysis and criticism; permit at most one replacement. Reuse it across turns; never spawn per turn. - Never run advisors concurrently or create a third. A new initial advisor is allowed only for a genuinely new task. - Treat advice as evidence and verify it before acting. ## Ensure the advisor exists Use exactly the custom agent type/name `advisor`, discovered from `~/.codex/agents/advisor.toml`, or from `$CODEX_HOME/agents/advisor.toml` when `CODEX_HOME` is set. If it is unavailable, first run the sibling setup script at `../advisor-setup/scripts/configure_advisor.py --status` as a read-only diagnostic. Resolve that path relative to this skill. If the status is valid, retry discovery. If the config is missing, malformed, unsupported, or cannot be verified, stop and request explicit authorization before changing persistent configuration. After authorization, use no options only to initialize a missing config, or use `--reset` to repair an existing one; recheck discovery after setup. If a valid config still cannot be discovered, report the discovery failure and ask the user to start a new task; do not change persistent configuration, silently substitute a write-capable worker, or claim an advisor was used. The bundled default is resolved to an exact available Codex model slug with medium reasoning. Persistent user configuration wins. Honor a per-task model or reasoning override only when the spawn interface supports and confirms it; otherwise explain that it was not applied and point the user to the `advisor-setup` skill for a persistent change. ## Consult only at high-value moments Orient first by reading the request and minimum relevant evidence. Consult at: 1. **Plan:** before substantive work when the approach, requirements, or risks are non-obvious. 2. **Recovery:** when errors repeat, evidence conflicts, or the approach may need to change. 3. **Review:** after the deliverable is durable and local checks pass, before declaring difficult work complete. Skip this workflow for routine edits, mechanical work, simple questions, and changes whose next step and verification are direct. Default to plan and review; allow one reconcile call when new evidence creates a material disagreement. Use at most two advisor calls by default: one plan call and one final-review call. Allow one third call only for material recovery or reconciliation; do not add calls for routine work. ## Start once, then send deltas For a genuinely new logical task with no advisor previously created, create one initial advisor and retain it in the root task context. Reuse it across ordinary turns. For later calls, send only changed requirements, new evidence, test results, decisions, and the new question. Do not resend unchanged constraints or background. Include the full constraints only in the initial request or when rehydrating a replacement thread; later deltas should mention constraints only when they changed. On resume failure, retry the same advisor once; a transient failure is not proof of loss. Create one replacement only after verified loss of the initial advisor and only if no replacement has previously been created for this logical task. Rehydrate it with a compact summary of the objective, constraints, affected files, decisions, evidence, prior advice, and open question. If loss cannot be verified, do not spawn; continue independently and disclose the limitation. ## Ask one focused question Use this shape: ```text Objective: Decision needed: Current executor view: Evidence: Constraints: Uncertainty: Challenge the current view, identify hidden risks, recommend the smallest robust next step, and give concrete verification. Return the configured advisor response format only. ``` For an independent review, send the artifact and requirements without leaking the executor's intended verdict. ## Integrate the advice 1. Compare it with user requirements and primary evidence. 2. Separate confirmed facts from hypotheses and preferences. 3. Accept only changes that improve correctness, safety, simplicity, or verification. 4. When advice conflicts with evidence, gather the cheapest decisive evidence and use the single reconcile call. 5. Execute all state-changing work from the root task and give the user the integrated result, not the advisor transcript. If the advisor fails, times out, or remains low quality after one focused follow-up, continue independently and disclose the limitation when material. ## Preserve the read-only boundary The advisor may inspect files, diffs, logs, and test output and recommend changes or checks. It must not edit files, run state-changing commands, commit, publish, contact external systems, spawn agents, or answer the user directly. The agent file requests a read-only sandbox, but live parent permission overrides can take precedence. Enforce the behavioral boundary too. If the advisor attempts a state change, stop it and disregard the attempted mutation.