If you're good at something most developers struggle with, you can package that expertise as a SKILL.md skill and sell it. The AI agent skills market is early, which means opportunity for creators who move now.
Quick Answer: AI agent skills that sell best save developers time on repetitive tasks, such as code review, testing, DevOps, and framework starters. Pricing typically ranges from $3-$10 for individual skills and $15-$25 for bundles on platforms like Agensi, which offers an 80/20 revenue split.
What actually sells
The skills that sell best aren't the most technically impressive — they're the ones that save the most time on tasks developers do repeatedly:
Code review skills — skills that encode opinionated review standards. Not "check for bugs" but "review this React component against our team's patterns for hooks usage, error boundaries, accessibility, and performance." Developers pay for judgment, not just checks.
Testing skills — test generation with framework-specific conventions. A pytest skill that generates proper fixtures, parametrized tests, and mock patterns saves hours per week. A Jest skill that handles async testing patterns and component testing with Testing Library.
DevOps skills — Dockerfile best practices, CI/CD pipeline generation, Kubernetes manifest templates. These are high-stakes (mistakes are expensive) and repetitive (similar patterns across projects).
Framework starters — Next.js, Django, FastAPI project scaffolding with opinionated defaults. These save the most time at the start of projects when developers make architectural decisions that are expensive to change later.
How to price
The Agensi marketplace supports free and paid skills. Pricing patterns that work:
Free skills build your reputation and drive traffic to paid offerings. List 2-3 free skills that demonstrate quality, then offer premium versions with more depth.
$3-$10 range is the sweet spot for individual skills. Low enough that developers don't need purchase approval, high enough that the revenue adds up with volume.
$15-$25 range works for comprehensive skill bundles — a "complete React development kit" with code review, testing, component generation, and deployment skills.
The economics
Agensi offers an 80/20 revenue split — you keep 80% of every sale. On a $5 skill:
- 100 sales = $400
- 500 sales = $2,000
- 1,000 sales = $4,000
Getting started
- Pick a domain you know well — your daily workflow has skills worth packaging
- Create a SKILL.md file (guide)
- Test it across at least 2 agents (Claude Code + one other)
- List it on Agensi with a clear description and tags
- Promote on Reddit, dev.to, and relevant Discord communities (promotion guide)
The creators earning the most aren't building one skill and hoping — they're building collections of related skills that cross-sell and building an audience around their expertise.