Pytest Pro
$7
Automated Pytest generation with AAA pattern, smart mocking, and automated test execution.
3
Claude Skill Creator Skills
Anthropic ships its own Skill Creator. Our Claude skill creator skills go further: they build skills from scratch, turn workflows into SKILL.md files, test and audit existing skills, and sharpen descriptions so Claude loads them at the right moment. Each works in Claude Code, Claude.ai and Claude Desktop.
81 live skills
Optimization Loop
$19
Autonomous loop that iteratively modifies, evaluates, and selects the best version of any text resource — skills, prompts, or campaigns — using a modify-measure-keep/discard cycle.
1
skill license fingerprinter
by Nex AI
$7
Protect your IP by embedding invisible, redundant buyer fingerprints and license terms into your AI skill files.
6
Agent Skill Marketplace Listing Optimizer
by Shandra
$9.99
Optimizes Agensi and AI agent skill listings with clearer positioning, stronger summaries, SEO keywords, use cases, sample outputs, pricing guidance, and conversion copy.
2
AI Agent Skill Architect
$9.99
Engineer production-grade AI Agent Skills through research, proprietary methodology, architecture, testing, and quality auditing.
2
Custom GPT to Agent Skill Converter
by Shandra
$5
Converts Custom GPT instructions, prompt systems, and agent ideas into structured, premium SKILL.md files for AI agent marketplaces.
2
skill auditor
by Matthew King
$5
Audit, score, and improve your AI agent skills for higher quality, lower token costs, better reliability, and marketplace success. Get actionable recommendations for prompts, instructions, tool usage, error handling, and user experience.
2
skillmd preflight listing pack
by Hermes Test
$9.99
Turn rough agent ideas or incomplete SKILL.md files into structured, marketplace-ready skill packages.
2
🛍️ Skill Listing Auditor
$12
Audit Agensi skill packages for marketplace readiness, formatting compliance, and safety pre-checks. Grade a skill package before you publish it: SKILL.md frontmatter, credits math, description routing, missing listing sections, and a light command-and-secret safety pre-check, scored 0 to 100 with plain-English fixes.
1
agensi preflight
by hanya radwan
$12
Audit and package your AI agent skills against Agensi security and listing requirements before submission.
1
Agent Evaluation & Regression Suite — Score Skills Before You Ship
by Vivek K
$15
Designs a scored eval suite for an AI agent or SKILL.md skill, measures trigger accuracy, catches regressions against a baseline, and issues a PASS / PASS-WITH-WARNINGS / FAIL release gate.
1
Agent Scaffold Builder
$8.99
Produces a complete AI agent scaffold — charter, system prompt, SKILL.md, tool map, guardrails, runbook, and test suite — from a one-line job description. Use when the user says "build an AI agent for X", "scaffold a new agent", "write a system prompt and SKILL.md", "design an agent's guardrails", or "make an agent workflow runbook". Do not use when the user just wants a single prompt with no full agent architecture.
1
Agent Skill Pricing & ROI Calculator
by Shandra
$50
Calculates value-based pricing, ROI, buyer segmentation, and monetization strategy for AI agent skills across marketplace, B2B subscription, and enterprise sales models.
1
Agent Skill Workbench Builder
$24
Produces a coordinated five-skill workbench for any professional field — one coordinator, three specialists, one reviewer — plus a wiring guide showing how they hand off to each other. Use when the user says build a skill workbench, make a team of agent skills for my field, set up a coordinator plus specialists, or design how several skills should hand off. Do not use when the user wants one standalone skill rather than a coordinated set.
1
AgentArchitect
by Charon Labs
$9
Standardize raw AI behavioral prompts into spec-compliant SKILL.md files with validated metadata and clean formatting.
1
AI Agent QA & Failure Testing Specialist
by Shandra
$15
Tests AI agents, prompts, and agent skills against edge cases, unsafe behavior, output failures, permission risks, escalation gaps, memory leaks, and marketplace-quality weaknesses.
1
AI Agent Reliability Auditor
by AKSA Studio
$8
Audit AI agents for role clarity, hallucination risk, tool safety, edge cases, escalation logic, failure handling, output consistency, and production readiness.
1
AI Agent Skill Foundry — Build Production Ready Skills
$5
Build production-ready AI agent skills from rough ideas through architecture, testing, security review, certification, marketplace positioning, and controlled evolution.
1
ai skill builder complete kit
by nowrich
$5
Standardize AI skill development with production-ready 5-file bundles, automated validation, and token management.
1
Api Test Generator
by Echo Rose
$5
Api Test Generator - A Premium AI Agent Skill
1
Bdd Framework
by Echo Rose
$7.99
Bdd Framework - A Premium AI Agent Skill
1
Catalog Skill — Vertical SKILL.md Ready to List
$39
One vertical SKILL.md pack: production skill, listing blurb, and acceptance criteria.
1
claude skill auditor fixer
by nowrich
$5
Audits and repairs SKILL.md files to fix broken triggers, YAML errors, and hallucination traps.
1
claude skill file generator
by nowrich
$5
Architects compact, token-aware, and deploy-ready SKILL.md files with structured build reports.
1
Why use Claude for creating skills
Claude can write a SKILL.md, but a good skill needs a trigger-ready description, clear steps and tests. A skill creator skill gives Claude that structure and the checks to run, so the skills you build load reliably and behave the same every time.
What's in our Skill Creator range
Our range covers building skills from scratch, improving and testing existing skills, and optimizing descriptions and triggers, plus tools that prepare a skill for publishing. We currently list 81 skills: 40 free and 41 paid. Every one is part of our Claude skills marketplace and passes our 8-point security scan before it goes live. For the wider picture, see all Claude agents and orchestration skills.
How to choose the right Skill Creator skill
Use these criteria to pick one:
- Beyond Anthropic's tool: Check what the skill adds to Anthropic's own Skill Creator.
- Tests and evaluations: Some skills also write tests and run regression checks.
- Selling skills: Pick a publishing-ready skill if you plan to sell what you build.
Top picks by use case
| Use case | Skill | Best for | Price |
|---|---|---|---|
| Build from scratch | AI Agent Skill Foundry — Build Production-Ready Skills | Production-ready skills end to end | $5 |
| Authoring | Skill Authoring Pack | A complete authoring toolkit | $5 |
| Selling skills | Agent Skill Marketplace Listing Optimizer | Listings that convert | $9.99 |
| Diagnosis | skill-auditor | Finding what is wrong in a skill | $5 |
| Listing review | 🛍️ Skill Listing Auditor | Auditing a listing before publish | $12 |
Before you install
You need Claude Code or Claude.ai and a workflow you repeat often enough to turn into a skill. Installing takes about 30 seconds. Built something useful? Sell your skill on Agensi.
Related Claude skills
Also browse Claude Prompt Generator and Optimizer Skills and Claude Humanizer Skills. New to this? Read our guide to create a SKILL.md from scratch.