Stop prompting from scratch — free Harper persona for Claude / GPT / Gemini

#ai #claude #webdev #programming

CastMyAgent walk-ons are downloadable packages, not a hosted bot. Harper's zip: 800+ word system prompt, persona.json, CLAUDE.md, Custom GPT instructions, Gemini instructions, ElevenLabs voice config, headshot, voice reel. Drop CLAUDE.md in the repo or paste the GPT instructions. Homepage: https://castmyagent.ai — not a Pass pitch, not a public GPT.