Oracle

Oracle

Delegate deep analysis to Codex CLI — launch it with a clear question, wait for it to finish, then present the results. Codex runs in a read-only sandbox with full codebase access, so it gathers its own context.

Prerequisites

• Codex CLI (required): Install with npm i -g @openai/codex, authenticate with codex login

If Codex CLI is not installed, stop and tell the user to install it.

Workflow

Do not read script source code. Run scripts directly and use --help for usage.

Step 1: Formulate Question

Codex CLI has full read access to the codebase and can explore files, grep code, and web search on its own. Your job is to craft a clear, specific question — not to gather context for it.

1. Understand the user's question and what they need analyzed.
2. Formulate a clear, specific question that captures the user's intent — include relevant file paths, function names, or architectural areas to point Codex in the right direction.
3. Optionally use --context-file for truly external context that Codex cannot access on its own (e.g., user-provided files outside the repo, paste content).

Step 2: Run Codex

Scripts are in scripts/ relative to this skill's directory. Run --help for full usage.

Launch scripts/codex-oracle.py as a background Bash task (run_in_background: true). Codex CLI may take up to 30 minutes.

# New session
python3 scripts/codex-oracle.py --question "..." [--context-file path] [--focus text] [--dry-run]

# Resume a previous session for follow-up
python3 scripts/codex-oracle.py --session-id  --question "follow-up question..." [--context-file path] [--focus text]

After launching the background task, end your response immediately and wait. Do not poll, read output files, or check process status. You will be notified automatically when Codex completes.

Step 3: Review Response

1. Read the Codex output from the background task completion notification.
2. Capture the oracle-session-id from the last line — store it internally for follow-ups.
3. Review the response yourself. Decide whether it fully answers the user's question or needs clarification/deeper analysis.

Step 4: Follow-up Loop (if needed)

If the Codex response is incomplete, ambiguous, or you need it to drill deeper — send follow-ups before presenting anything to the user. Repeat as many times as needed.

1. Use the stored oracle-session-id with --session-id to resume the session. Codex retains the full conversation history.
2. Only send the new follow-up question — do not repeat prior questions or the system prompt.
3. Launch as a background task, wait for completion, and review the new response.
4. Loop back to decide: sufficient, or another follow-up needed?

The session accumulates context with each round, making subsequent answers more informed. Start a new session (Step 1) only when the topic changes entirely.

Step 5: Present Results

Once you have a complete, clear answer from the oracle (after one or more rounds):

1. Synthesize all Codex responses into a single coherent answer for the user.
2. Use your own judgment on formatting and what to highlight — you do not need to echo every detail from every round.

Rules

• Codex is the analyst — your role is to formulate, launch, and present. Do not start your own parallel analysis while Codex runs.
• Organize findings by theme, not severity. Group related insights together. Structure adapts to question type (architecture → components/trade-offs, bug → root cause hypotheses, security → threat model, etc.).
• Read background-task output via the Read tool on the output-file path from the completion notification. TaskOutput cannot find background Bash task IDs and will fail.
• Always use the wrapper script for Codex. The script sets the correct model and read-only mode; calling codex CLI directly bypasses these.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: trancong12102
• Source: trancong12102/agentskills
• License: MIT

Install and usage instructions live in the source repository linked above.