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Writing system prompts for AI agents v1.0.0

Use this resource to write the system prompt of an AI agent with its constraints and guardrails

New

  • 385 downloads
  • 213 likes
  • 149 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install system-prompt-design-agents

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent designs the system prompt of an AI product: persona, scope, tool usage instructions, multi-turn behavior and guardrails. You get a clear system prompt with test cases to check it.

Mostly picked by

Updated November 2, 2026

Card for the “Writing system prompts for AI agents” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: overview and common mistakes
  • references/system-prompt-design.md: system prompt design
  • references/guardrails-and-testing.md: guardrails and testing

Good fit for

  • Your AI assistant drifts outside the scope you set
  • You want a consistent persona for customer support

Not for

    Tags

    • system prompt
    • agent
    • persona
    • guardrails
    • ai

    About

    You say

    “Write the system prompt of a support assistant: warm tone, short answers and refusal of off-topic requests.”

    Card for the “Writing system prompts for AI agents” skill

    Skill published by oakoss under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to write the system prompt of an AI agent with its constraints and guardrails
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.3 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/guardrails-and-testing.md10.1 KB
    • references/system-prompt-design.md10.3 KB
    • SKILL.md4.6 KB

    Origin and licence

    Listed unmodified

    Author
    oakoss
    Source
    github.com/oakoss/agent-skills/tree/85e3a3919d9e0ec7f7302a5143ec4b3e66f5f6ad/skills/expert-instruction
    Licence
    MIT

    Notice

    « expert-instruction » (oakoss, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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