How to sell AI skills (SKILL.md packages)
Updated 14 October 2026
Short answer
To sell an AI skill, package it as a folder with a SKILL.md file (a name and a precise description in the frontmatter, then step-by-step instructions), plus any scripts, templates and example files it needs. Test it on real tasks, write a short README, then sell it as a ZIP through a marketplace or checkout tool. Most single skills sell for $9–$49. Bundles of related skills with updates can command more.
What to package
- SKILL.md with a specific name and a description that says exactly when the skill should be used
- Supporting files: scripts, templates, reference docs and example data
- A README covering installation, the agents and tools it was tested with, and limitations
- Before/after examples that show the output quality
Step by step
- 1
Choose a repeatable task
Skills work best for procedures an agent should follow consistently, such as producing a branded report, reviewing a contract against a checklist, or turning meeting notes into tickets.
- 2
Write a precise description
Agents decide whether to load a skill based on its description. State the trigger ("Use when the user asks to…") and the expected output.
- 3
Keep instructions and resources separate
Keep SKILL.md focused on steps. Put long reference material and scripts in separate files that the skill points to, so context stays small.
- 4
Test in clean environments
Run the skill in a fresh workspace and on several real inputs. Remove secrets, absolute paths and personal data.
- 5
Package and document
Zip the folder, include a README and a licence, and state which agent versions you tested with.
- 6
List and promote
List on a marketplace that understands skills, publish a free sample skill to build trust, and demo the result with a short video or screenshots.
Pricing guidance
- Single focused skill: $9–$29
- Skill with scripts, templates or domain reference material: $19–$49
- Bundles of 5+ related skills with updates: $49–$99
- Consider a free "lite" skill that links to the full version
Where to sell: options compared
| Option | Fees | Pros | Cons |
|---|---|---|---|
| BotAisle | 20% on paid sales; 0% on free listings | Built for AI artifacts (skills, MCP servers, workflows, bots); security review on every listing; six-language storefront; free listings allowed | Pre-launch, so no buyer traffic yet; payouts are net 30 after the month of sale |
| Gumroad | 10% + $0.50 per direct sale plus card processing; 30% on Discover marketplace sales | Very quick to set up; merchant of record (handles sales tax/VAT); well known to buyers | Not specific to AI; no security review of code; you bring most of the traffic yourself |
| Lemon Squeezy | 5% + $0.50 per sale; surcharges for international cards, PayPal and subscriptions | Low fees; merchant of record; licence keys and subscriptions built in | Checkout tool rather than a discovery marketplace; ID and business review before going live |
| PromptBase | 20% on marketplace sales; 0% via your referral link | Established buyer audience for prompts | Focused on prompts; not suited to code, MCP servers or workflows |
| Your own site (e.g. Stripe Checkout) | Card processing only (roughly 3% + $0.30); you handle tax | Full control, branding and customer data; lowest per-sale fees | You build delivery, licensing, tax compliance and traffic yourself |
Fees are as published by each provider in October 2026 and can change. Check their pricing pages before you decide. BotAisle is pre-launch: it is accepting founding creators but doesn't have buyer traffic yet.
Frequently asked questions
- What is a SKILL.md file?
- It's a Markdown file with YAML frontmatter (a name and a description) followed by instructions that an AI agent loads when the task matches. It can reference other files in the same folder.
- Can buyers just copy my skill?
- Skills are plain files, so technical protection is limited. Use a clear licence, sell updates and support, and compete on quality and maintenance.
- Should a skill include code?
- Only when it helps. Scripts make outputs more reliable, but buyers and reviewers will check them. Avoid network calls you don't declare.
- Are skills reviewed on BotAisle?
- Yes. Every upload is scanned for secrets and malware. Skills with scripts that request network access or credentials also get a human review.