Signalcompose Claude Tools Codex Research

Codex Research Skill

This skill provides integration with OpenAI Codex CLI for research and code review tasks.

Prerequisites

• Codex CLI installed: npm install -g @openai/codex
• Authentication (one of):
  • Run codex to complete OAuth authentication, OR
  • Set OPENAI_API_KEY environment variable

Available Scripts

All scripts are located in ${CLAUDE_PLUGIN_ROOT}/scripts/.

1. Check Installation

${CLAUDE_PLUGIN_ROOT}/scripts/check-codex.sh

Verifies Codex CLI is installed and authentication is configured (OAuth or API key).

2. Research Mode (codex exec)

${CLAUDE_PLUGIN_ROOT}/scripts/codex-exec.sh "your research question"

Use for:

• Technical research questions
• Documentation lookup
• Concept explanations
• Best practices inquiry

Example:

${CLAUDE_PLUGIN_ROOT}/scripts/codex-exec.sh "What is dependency injection and when should I use it?"

3. Code Review Mode

${CLAUDE_PLUGIN_ROOT}/scripts/codex-review.sh <target>

Options:

• --staged - Review all uncommitted changes (staged + unstaged)
• <file> - Review specific file (uses codex review <file>)
• <directory> - Review directory (uses codex review <dir>)

Important: --staged uses codex exec review uncommitted which reviews all uncommitted changes, not just staged files. To review only specific files, use the file/directory target.

Examples:

${CLAUDE_PLUGIN_ROOT}/scripts/codex-review.sh --staged
${CLAUDE_PLUGIN_ROOT}/scripts/codex-review.sh src/main.ts
${CLAUDE_PLUGIN_ROOT}/scripts/codex-review.sh ./lib

Workflow

1. First, verify Codex CLI is available using check-codex.sh
2. For research tasks, use codex-exec.sh with the research prompt
3. For code review, use codex-review.sh with the target

Error Handling

• Timeout: Commands timeout after 120 seconds
• Not installed: Provides installation instructions
• Not authenticated: Prompts to complete OAuth or set OPENAI_API_KEY

Notes

This skill uses context: fork to isolate large outputs from the main conversation context.

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