Audit Claude Code to Codex harness migrations, including AGENTS.md/CLAUDE.md scope, hooks, MCP config, skills, secrets, and validation notes. Use after a Codex import or Bring Your AI migration before letting Codex edit code.
SkillScore83Maintained
Automatic
◆AI Engineer pack
Last verified 9/2/2026
What it changes
Passed 16 of 19 test cases with the skill, and 7 of 19 without it.
Without skill35%
With skill83%
Checks it passed that the model alone missed
Includes manual review in the search regex pattern.
Marks non-enforced workflow rules as advisory notes.
Includes validation note in the search regex pattern.
and 11 more in the full report
11 fixed8 passed either way4 still failing0 broke
Pass-rate lift
+48 pp
Tokens
-17%
Agent turns
0%
Response time
-16%
Model gemini-3.6-flashMeasured 9/2/2026v119 of 23 cases passed with skill · 19 comparable
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 10 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 10
Prompt
What command in Bring Your AI allows me to inspect the synchronized state specifically targeting the `~/.codex` root directory?
What was checked, without and with the skill
Checked
Without skill
With skill
Directs the user to run bringyour sync inspect --root ~/.codex.
Missed
Passed
case-06 · gemini-3.6-flash · 9/2/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md56 linessingle file
Bring Your AI Migration Auditor
Use this skill after importing a Claude Code setup into Codex or after running: