Codex Review

Use Codex as an independent reviewer. Always read-only, always scoped, always machine-parseable when a harness consumes the result — and never relay a finding you haven't checked against the code.

Command surface verified against codex-cli 0.142.5; on flag errors, recheck codex --help and codex exec --help — placement and availability shift between versions.

When to use

• Independent second-opinion review of a diff, branch, commit, or PR
• Review workflows that route to gpt-5.6 alongside Claude reviewers
• Pre-merge risk sweeps (correctness, security, data loss, concurrency, migrations)

Preflight

codex --version       # confirm CLI present; stop and report if missing
git fetch origin main # when reviewing against a base