Cross-Agent Task Runner — OpenAI Codex CLI

Procedures

Step 1: Self-Call Detection

1. Check for codex in process ancestry (no dedicated env var exists for Codex CLI).
2. If detected, stop and inform the user: "Cannot invoke Codex from within Codex. Use a different target CLI."

Step 2: Execute Shared Procedure

1. Read references/shared-procedure.md for the core workflow (mode inference, context gathering, prompt construction, result presentation).
2. Read references/cli-codex.md for Codex-specific flags, model selection heuristics, and version compatibility matrix.
3. Follow the shared procedure using the Codex-specific details.