Agent File Format

TOML

A TOML file where all agent configuration - including the developer instructions that serve as the system prompt - lives under named keys, not separated into a body section. Used by OpenAI Codex.

Agent File Format

Referenced by

← Agent File Format

ClientOpenAI CodexOpenAI's Codex CLI. Reads skills from the cross-client .agents/skills/ tree and reads subagent definitions from .codex/agents/ as TOML files. The TOML schema…