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

This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.

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:…

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  1. 2026-09-02 12:58 · DEV Community — AI
    Stop prompting from scratch — free Harper persona for Claude / GPT / Gemini

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