Task prompt · Agents & Automation
Write instructions for a custom GPT, Gem or Project
by Agent Yard TeamSystem instructions that make a custom assistant reliable.
You'll attach
Text only
Works with
ChatGPT
Claude
Gemini
Grok
CopilotGrok BotUse cases
- System instructions that make a custom assistant reliable.
- Reuse it as often as you like: fill in the blanks (job of the assistant; users) with new details and copy again.
- With ChatGPT, Claude, Gemini and more, the AIs that support what this prompt needs.
Featured in: Best AI prompts for writing system prompts and agent instructions.
How to use it
- Open chatgpt.com or claude.ai (or another AI listed here).
- Fill in the highlighted blanks ([JOB OF THE ASSISTANT], [USERS]) below, or edit them after pasting.
- Copy the prompt, paste it into the chat and send.
Fill in the blanks (optional)
Prompt
Write the instructions for a custom assistant (a GPT in ChatGPT, a Gem in Gemini or a Project in Claude) that [JOB OF THE ASSISTANT] for [USERS]. Include: role, what it should ask first, step-by-step behavior, output format, tone, what it must never do, and how to handle missing info. Also list which files I should upload as knowledge and 5 test prompts to check it works.
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