Code Review & Testing · IN-DEPTH PROFILE

Skill Creator

Create, improve, and benchmark Agent Skills with trigger tests and comparative evaluation.

View listed source ↗Installation guide ↓
Best for

Authors maintaining reusable Agent Skills

What you get

Design the Skill + Build trigger evals

Main limitation

Meaningful benchmarks require representative prompts, repeat runs, and careful human judgment.

First risk

Untrusted evaluation prompts and artifacts. Test prompts, example files, generated scripts, and review artifacts can contain unsafe instructions or sensitive data. Isolate runs and inspect every artifact before execution or sharing.

EVIDENCE FRESHNESS

Three checks, kept separate

A recent source check is not a runtime test or security audit.

Upstream sourceChecked 2026-09-23

Pinned revision · 34040c9c

Open pinned commit ↗
SkillSignal profileEditorial metadata

Updated 2026-09-23

Runtime & securityNot independently verified

Source review does not certify behavior or safety.

IN PLAIN ENGLISH

What it does—and when it fits

Skill Creator is Anthropic's end-to-end workflow for creating, improving, and evaluating Agent Skills. It combines a concrete user interview, progressive-disclosure structure, trigger tests, baseline comparisons, grading, benchmark aggregation, and qualitative review.

This is aimed at Authors maintaining reusable Agent Skills. Compare the examples below with your task, then review the limitations, permissions, and risks before installing.

What you get
  • Design the SkillTurn examples and edge cases into scoped instructions and resources.
  • Build trigger evalsCreate should-trigger and should-not-trigger prompts for the description.
  • Benchmark iterationsCompare skill-enabled runs with baselines and review variance.
What makes it different
  • Treats triggering and task performance as behaviors to evaluate, not assumptions.
  • Encourages progressive disclosure instead of oversized SKILL.md files.
Community signalNo attributed third-party rating yet

No verified review text is in the current dataset. Use the linked source for the latest discussion.

Read the source note ↗

INSTALL BY AGENT

Choose your Agent

Paths come from official Agent docs or the universal installer behind skills.sh. Compatibility still follows this Skill's record.

Native

This Skill's current record explicitly names this Agent. Still inspect scripts, permissions, and external dependencies first.

Project install (recommended)
npx skills add anthropics/skills --skill skill-creator --agent claude-code
Personal install
npx skills add anthropics/skills --skill skill-creator --agent claude-code -g

Project install stays with this repository for team sharing. Personal install adds -g and works across repositories.

View install paths
Project path.claude/skills/skill-creator/
Personal path~/.claude/skills/skill-creator/
Official agent docs

Claude Code discovers custom Skill folders automatically at project or personal scope.

View path evidence ↗

TYPICAL WORKFLOW

A practical workflow

01

Design the Skill

Turn examples and edge cases into scoped instructions and resources.

02

Build trigger evals

Create should-trigger and should-not-trigger prompts for the description.

03

Benchmark iterations

Compare skill-enabled runs with baselines and review variance.

THE TRADEOFFS

Advantages and tradeoffs

Notable strengths

  1. Treats triggering and task performance as behaviors to evaluate, not assumptions.
  2. Encourages progressive disclosure instead of oversized SKILL.md files.

Limitations

  1. Meaningful benchmarks require representative prompts, repeat runs, and careful human judgment.
  2. Some optimization and blind-comparison paths depend on CLIs, subagents, or viewer tooling that may be unavailable.

COMPARE THE TRADEOFF

Consider these close alternatives

These are deterministic nearby candidates, not paid placements or a universal ranking. Open the full profile before choosing.

01

Same job family · native to Claude Code

frontend-design

Design constraints that push generated interfaces beyond generic AI UI.
Tradeoff to check
Aesthetic judgments remain subjective and still need stakeholder review.
First risk
Style over function · Medium
Source state
Pinned · 34040c9c
Open frontend-design profile ↗
02

Same job family · native to Claude Code

mcp-builder

Plan, implement, and evaluate high-quality MCP servers in Python or TypeScript.
Tradeoff to check
The guide cannot replace current MCP SDK or target-API documentation.
First risk
Overpowered external-service tools · High
Source state
Pinned · 34040c9c
Open mcp-builder profile ↗
03

Same job family · native to Claude Code

web-design-guidelines

Review interfaces against practical web design and accessibility rules.
Tradeoff to check
It depends on network access and a live guideline document whose contents can change over time.
First risk
Rule drift or context-free findings · Medium
Source state
Pinned · 063bee94
Open web-design-guidelines profile ↗
Compare more in the directory →

BEST FIT

Who it is for

→

Authors maintaining reusable Agent Skills

→

Teams evaluating trigger quality and workflow impact

BEFORE YOU USE IT

Risks to review before use

High

Untrusted evaluation prompts and artifacts

Test prompts, example files, generated scripts, and review artifacts can contain unsafe instructions or sensitive data. Isolate runs and inspect every artifact before execution or sharing.

SECURITY

What the permission profile means

  • Run generated scripts and candidate Skills in disposable workspaces.
  • Do not place secrets or private production data in eval prompts or benchmark artifacts.

Not a security certification. External ratings are attributed references. SkillSignal has not independently executed or security-reviewed this Skill.

COMMON QUESTIONS

Skill Creator FAQ

What is the Skill Creator?

Create, improve, and benchmark Agent Skills with trigger tests and comparative evaluation. Skill Creator is Anthropic's end-to-end workflow for creating, improving, and evaluating Agent Skills. It combines a concrete user interview, progressive-disclosure structure, trigger tests, baseline comparisons, grading, benchmark aggregation, and qualitative review.

How do I install the Skill Creator?

Open and review the listed source, choose the project or personal path for your Agent, then verify the first run in a controlled project. Open the pinned commit and read the current SKILL.md.

Is the Skill Creator safe to use?

SkillSignal checked the source on 2026-09-23, but that is not a runtime test or security certification. Review the “Untrusted evaluation prompts and artifacts” risk first and begin with the least access required.

INSIDE THE PACKAGE

Indexed files

SKILL.mdUpstream package contentSource-linked
agents/Upstream package contentSource-linked
references/Upstream package contentSource-linked
scripts/Upstream package contentSource-linked
assets/Upstream package contentSource-linked

TAGS

skill-authoringevalsbenchmarking

Original SkillSignal editorial profile grounded in the current SKILL.md and linked files at pinned Anthropic commit 34040c9c, checked 2026-09-23; not independently executed or security-certified.