git:20260928.cf9620c to git:20261002.162238f

- description: Get a second opinion from OpenAI Codex on your current code changes. Analyzes staged/unstaged diffs and returns prioritized findings. Use when user asks to "review with Codex", "Codex code review", or "ask Codex to check my code".

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- ## Portable contract

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- Gather the relevant staged, unstaged, and untracked code changes; build a bounded context brief; request a read-only Codex review at high reasoning effort; verify each reported finding against source; and return only prioritized, source-supported findings. Preserve the configured Sol-to-Terra fallback and disclose it.

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- ## Host adapters

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- ### Pi adapter

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- Call the native `ask-codex` tool with `reasoningEffort: "high"` and apply only the `Portable contract` section of `../../agents/codex-reviewer.md`. The review runs inline in the current host context; do not claim subagent isolation.

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- <!-- HOST-ADAPTER:CLAUDE-CODE:START -->

- ### Claude Code adapter

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- The existing detailed workflow below is the Claude Code adapter. Its Agent, MCP, hook, `CLAUDE_PLUGIN_ROOT`, and `AskUserQuestion` mechanics apply only on Claude Code; they do not override the Pi adapter above.

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- # Codex Code Review

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- Review current code changes by delegating to the `codex-reviewer` agent.

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- ## When to use this vs codex-pair

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- This skill is **precision-first**: confidence ≥ 80, "don't flag style/linter-catchable" filter. Optimized for low false-alarm rate on diff review — appropriate default for routine PRs.

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- For **recall-first** review on hot-path code (money handling, security paths, spec-implementing code), see the [`codex-pair`](../codex-pair/SKILL.md) sibling — a PostToolUse hook that opts in per-project via a `.codex-pair/context.md` marker file. The 4-task benchmark in ADR-077 shows codex-pair catches domain-level "wrong but won't crash" issues (float-money precision, cross-cutting validation gaps, edge clamping) that this skill's confidence filter structurally suppresses. Different classes of bug, not the same class with different completeness.

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- | Use this skill | Use codex-pair |

- |---|---|

- | Routine PR review (cheap, high precision) | Money/billing/security/spec code (deeper, costlier) |

- | You want one comprehensive report | You want every concern flagged with severity |

- | Cost-sensitive (~$0.04/PR) | Acceptable cost (~$0.20/edit pass) |

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- ## Instructions

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- 1. Gather the diff to review:

- - Run `git diff` to get unstaged changes

- - Run `git diff --cached` to get staged changes

- - Combine both into a single diff

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- 2. If the diff is empty, inform the user there are no changes to review.

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- 3. Launch the `codex-reviewer` agent with the diff content. The agent handles the Codex prompt structure and output formatting, using GPT-6 Astra at `high` reasoning effort with automatic Terra fallback.

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- <!-- HOST-ADAPTER:CLAUDE-CODE:END -->