Command Creator Claude Code docs source: https://code.claude.com/docs/en/slash-commands.md OpenAI Codex CLI https://developers.openai.com/codex/guides/slash-commands.md Augment Code / Auggie https://docs.augmentcode.com/cli/custom-commands.md https://docs.augmentcode.com/cli/custom-commands-examples.md Cursor https://cursor.com/docs/agent/chat/commands.md