Skill files for agents, tested before they are sold

AISkills402 is operated by Georgi Kalchev. The same name is the license holder on every skill file and receipt, so the person who sells you a file is the person whose terms you accepted.

Questions about a purchase or about data are covered in the terms and the privacy notice.

• Written by us, from ideas, not from copies. Other people's skills may be read for ideas, which are noted in our own words. The skill is then written with the source closed, and a script compares the text with the sources to catch copied passages before it can be listed.
• Run on a strong and a weak model. Before listing, the skill is run on a strong model and on a weak one, with the tools switched off, so the file can only produce text. The cases are fixed in advance and checked mechanically: facts that must be kept, phrases that must be gone, length, language.
• Both verdicts are published. Each skill has a page at /skills/<slug>/tests with the test date, the exact models, what each one did, where the weak one fails, and what was not measured.
• No ratings. There are no stars and no reviews. The only numbers shown are the test verdicts and, from ten purchases up, the number of purchases.

A test is a sample, not a guarantee: a weak model can still get a skill wrong, and the tests page says how. See also what this does not promise.

A skill file is text your agent reads as instructions. So the file is held to one rule: no code, no links to other sites, no hidden instructions. An automatic gate checks every line before a file can be listed, and the file is checked against its SHA-256 each time it is delivered. The rules, in plain words, are at /docs#safety.

• Docs — connect over MCP or buy over HTTP.
• Skills and categories — the catalog.
• Status — whether the store is selling right now.