# Grill Me Codex

SUPERSEDED by /claudex-loop (formerly /crucible; adds a Phase 0 research/recon pass +...

- Repository: https://github.com/chaseai-yt/claudex-loop (3314 stars)
- Category: Design
- License: see repository
- Last updated: 2026-10-14
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add chaseai-yt/claudex-loop --skill grill-me-codex -g -a claude-code -y`
Codex: `npx skills add chaseai-yt/claudex-loop --skill grill-me-codex -g -a codex -y`
Cursor: `npx skills add chaseai-yt/claudex-loop --skill grill-me-codex -g -a cursor -y`
Gemini CLI: `npx skills add chaseai-yt/claudex-loop --skill grill-me-codex -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add chaseai-yt/claudex-loop`

## Description

SUPERSEDED by /claudex-loop (formerly /crucible; adds a Phase 0 research/recon pass + rebuilt interview), prefer that skill unless you explicitly want this one. Two-act plan hardening. ACT 1 (you ↔ Claude), Claude interviews you relentlessly about a plan or design, one question at a time, recommending an answer for each and exploring the codebase when it can answer itself, until every branch of the decision tree is resolved. ACT 2 (Claude ↔ Codex), Claude writes the locked plan to PLAN.md and OpenAI Codex adversarially reviews it in a read-only sandbox (VERDICT:APPROVED/REVISE), Claude revises and re-submits to the SAME Codex session until APPROVED or a MAX_ROUNDS cap, then you sign off before any code. Use when the user says "/grill-me-codex", "grill me then have codex review", "grill me and stress-test the plan", "interview me about this plan then get a second model on it", or is about to build something high-stakes (auth, schema, concurrency, migrations, payments) and wants both alignment AND a cross-model sanity check before implementation. Builds on Matt Pocock's grill-me (MIT). For the docs-aware variant use /grill-with-docs-codex; if you already have a plan and want only the Codex review use /codex-review. NOT for reviewing already-written code (use /codex:review) and NOT for trivial changes.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

# Grill-Me-Codex, Get Grilled, Then Get Reviewed

Two acts, two different jobs:

- **Act 1 fixes the #1 failure mode: building the wrong thing.** Claude interrogates *you* until intent is locked, no guessing at ambiguity. (This act is Matt Pocock's `grill-me`, used under MIT, see `THIRD-PARTY-NOTICES.md`.)
- **Act 2 fixes the #2 failure mode: a plan that sounds right but breaks.** A *different model* (Codex) adversarially attacks the locked plan. Cross-model = no echo chamber.

You enter at two points only: answering the grill, and signing off the converged plan. Codex is read-only the whole time and never touches a file.

---

## ACT 1, GRILL (you ↔ Claude)

> Interview me relentlessly about every aspect of this plan until we reach a shared understanding. Walk down each branch of the design tree, resolving dependencies between decisions one-by-one. For each question, provide your recommended answer.
>
> Ask the questions one at a time, waiting for my answer before continuing.
>
> If a question can be answered by exploring the codebase, explore the codebase instead.

When the decision tree is resolved and we're aligned, **write the agreed plan to `PLAN.md`** in this structure, then move to Act 2:

```markdown
# Plan: <task>
_Locked via grill, by Claude + <user>_

## Goal
<one paragraph, reflects what the grilling actually settled>

## Approach
<numbered, concrete steps>

## Key decisions & tradeoffs
<the contestable choices the grill resolved, name them so Codex has something to bite>

## Risks / open questions
<anything still genuinely open>

## Out of scope
<bounds the grill established>
```

Initialize `PLAN-REVIEW-LOG.md`:
```markdown
# Plan Review Log: <task>
Act 1 (grill) complete, plan locked with the user. MAX_ROUNDS=<n>.
```

---

## ACT 2, REVIEW (Claude ↔ Codex)

Now hand the locked plan to Codex for adversarial review. Same engine, mechanics verified end-to-end (2026-06-04).

The rest: https://github.com/chaseai-yt/claudex-loop/blob/HEAD/legacy/grill-me-codex/SKILL.md