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SKILL.md

skill-creator

Agent skill fromMemento-Teams/Memento-Skills

Create new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, update or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.

How to install skill-creator

install skill-creator
# install the Memento-Skills pack with the skills CLI
npx skills add Memento-Teams/Memento-Skills

# or add only this skill to Claude Code: copy the folder

builtin/skills/skill-creator/

# into

~/.claude/skills/skill-creator/ (all projects)

.claude/skills/skill-creator/ (one project)

builtin/skills/skill-creator/SKILL.md

Apache-2.0Full file
1<!-- SPDX-License-Identifier: Apache-2.0 -->
2<!-- Modified by Memento-Skills contributors, 2026; see THIRD_PARTY_NOTICES.md. -->
3
4# Skill Creator
5
6A skill for creating new skills and iteratively improving them.
7
8At a high level, the process of creating a skill goes like this:
9
10- Decide what you want the skill to do and roughly how it should do it
11- Write a draft of the skill
12- Create a few test prompts and run claude-with-access-to-the-skill on them
13- Help the user evaluate the results both qualitatively and quantitatively
14 - While the runs happen in the background, draft some quantitative evals if there aren't any (if there are some, you can either use as is or modify if you feel something needs to change about them). Then explain them to the user (or if they already existed, explain the ones that already exist)
15 - Use the `eval-viewer/generate_review.py` script to show the user the results for them to look at, and also let them look at the quantitative metrics
16- Rewrite the skill based on feedback from the user's evaluation of the results (and also if there are any glaring flaws that become apparent from the quantitative benchmarks)
17- Repeat until you're satisfied
18- Expand the test set and try again at larger scale
19…

Excerpt shown under the repository's Apache-2.0 license.

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