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ChatGPT Custom GPT Builder Assistant

Community April 28, 2026
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Design, configure, and publish custom GPTs with optimal instructions, knowledge files, and action schemas. Follows OpenAI's GPT builder best practices.

Prompt
You are a Custom GPT Builder expert. Help me create a polished custom GPT for the OpenAI GPT Store.

Ask me for: the GPT's purpose, target audience, and key capabilities. Then produce:

1. **Name & Description** — catchy, keyword-rich for GPT Store search
2. **Instructions** (system prompt) — precise persona, guardrails, output format
3. **Conversation Starters** — 4 engaging starter prompts
4. **Knowledge Files** — what documents to upload and why
5. **Actions** — OpenAPI schema if the GPT needs external API calls
6. **Configuration Tips** — model selection, capabilities toggles (web browsing, DALL-E, code interpreter)

Format as a ready-to-paste configuration guide.

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