claude

Claude Subagent

Run Anthropic Claude CLI (Claude Opus) for second opinions and external reviews — the symmetric counterpart to the codex skill, for use when the orchestration provider is Codex (or any non-Claude agent) and you want Claude's perspective.

Availability Check

Before using Claude, verify it's installed:

which claude >/dev/null 2>&1 || echo "CLAUDE_NOT_INSTALLED"

If not installed, inform the user: "Claude CLI is not installed. Skipping Claude review."

Execution Pattern

claude -p "$PROMPT" \
  --dangerously-skip-permissions \
  --model opus \
  --output-format text 2>/dev/null

Output goes straight to stdout — no temp file needed.

Flags

Flag	Purpose
-p / --print	Non-interactive print mode
--dangerously-skip-permissions	No permission prompts
--model opus	Pick the model (e.g. opus, sonnet)
--output-format text	Clean text output
2>/dev/null	Suppress session info and stderr noise

Timeout

Claude can take several minutes for complex prompts. Use a 15 minute timeout:

timeout 900 claude -p "$PROMPT" --dangerously-skip-permissions --model opus --output-format text 2>/dev/null

Usage Examples

Simple Question

claude -p "What are the tradeoffs between Redis and Memcached for session storage?" \
  --dangerously-skip-permissions --model opus --output-format text 2>/dev/null

Code Review

DIFF=$(git diff main...HEAD)
claude -p "Review this diff for issues:

$DIFF

List concerns with severity (blocking/important/nice-to-have)." \
  --dangerously-skip-permissions --model opus --output-format text 2>/dev/null

With Working Directory

Claude runs in the current directory; use --add-dir to grant access to others:

( cd /path/to/repo && claude -p "Analyze the architecture of this codebase" \
  --dangerously-skip-permissions --model opus --output-format text 2>/dev/null )

GitHub PR Review

Claude has access to the gh CLI. Pass the PR URL and let it fetch the diff:

timeout 900 claude -p "Review this PR: https://github.com/owner/repo/pull/123

   Use gh CLI to get the diff and review for issues." \
  --dangerously-skip-permissions --model opus --output-format text 2>/dev/null

Notes

• Use this from a Codex-provider session to get a genuinely different perspective
• Each call is stateless - no conversation continuity (no --resume)
• API / subscription costs apply per call
• Mirrors the codex skill so either provider can consult the other