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Prompt design and evaluation subagent v1.0.0

Use this resource to design, test and improve prompts for language models

New

  • 270 downloads
  • 107 likes
  • 180 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install prompt-design-evaluation-subagent

First time: connect the CLI with

npx --yes palatekit@latest login

The prompt-engineer subagent is called to write system prompts and few-shot examples, compare variants through A/B tests, reduce token counts, manage versions and plan fallback strategies for errors.

Mostly picked by

Updated November 2, 2026

Card for “Prompt design and evaluation subagent”

Details

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

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What you get

  • The subagent file (in English): role, checklist and prompt patterns
  • Evaluation criteria: accuracy, tokens, latency and cost per request

Good fit for

  • An app whose answers vary too much from one request to the next
  • A team that wants to cut prompt costs without losing quality

Not for

    Tags

    • prompt engineering
    • evaluation
    • few-shot
    • language models

    About

    You say

    “Rewrite this classification prompt so it is more stable, and compare the two versions.”

    Card for “Prompt design and evaluation subagent”

    Subagent published by VoltAgent under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Copy the file into .claude/agents/ (project) or ~/.claude/agents/ (all your projects)
    2. Ask your agent to design, test and improve prompts for language models, or call the subagent by name
    3. Review its work

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • prompt-design-evaluation-subagent.md6.5 KB

    Origin and licence

    Listed unmodified

    Author
    VoltAgent
    Source
    github.com/VoltAgent/awesome-claude-code-subagents/blob/f2e2ea7e0202cc05fa2d469fcb2c57fe08603450/categories/05-data-ai/prompt-engineer.md
    Licence
    MIT

    Notice

    « prompt-engineer » (VoltAgent, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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