# Code Review: Step 3 — Launch Codex with icuvisor as an MCP server

## Verdict

Approved. No blocking findings.

## Findings

None.

## Verification performed

- Reviewed the changed file list with `git diff 4866d7802da8140a62bcafdeab296339dee50981..HEAD --name-only`.
- Reviewed the full diff with `git diff 4866d7802da8140a62bcafdeab296339dee50981..HEAD`.
- Read `PROMPT.md`, the updated `STATUS.md`, and the Step 3 plan review for context.
- Confirmed the registered tool catalog in `internal/tools/registry.go` currently contains only `get_athlete_profile`, matching the non-sensitive tool list recorded in `STATUS.md`.
- Checked the retained temporary Codex outputs at `/tmp/icuvisor-codex-step3-message.txt` and `/tmp/icuvisor-codex-step3-events.jsonl`; they contain only the tool name and generic Codex event metadata, with no secrets or personal data.
- Checked the tracked diff for credential assignments; no `INTERVALS_ICU_*=` values were introduced.
- Ran `git diff --check 4866d7802da8140a62bcafdeab296339dee50981..HEAD`; no whitespace errors were reported.

## Non-blocking notes

- `STATUS.md` records the expected Step 3 outcome safely: transient Codex stdio launch, fresh session completion, and Codex-visible tool list containing `get_athlete_profile`.
- The Step 3 section has all checklist items checked while the step status remains `In Progress`. That is acceptable if the workflow keeps the step open until review lands; otherwise, mark it complete in the next status update.
- Credentials remain unavailable in this worktree, so Step 4 should either obtain them through a safe, non-recorded path or document the real intervals.icu validation blocker without attempting credentialed calls using dummy values.
