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AISkills402 Accessibility Review SKILL.md
x402
AISkills402 Accessibility Review SKILL.md is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-14).
Purchases and downloads a tested SKILL.md file for AI agents to perform WCAG accessibility reviews on HTML markup, paid once via x402 in USDC on Base.
Price / call$0.03
Success—
StatusUnknown
How this service works
Accessibility Review: WCAG Defects in Markup — Reviews pasted HTML or JSX for the accessibility defects a screen reader or keyboard user hits first, and names the WCAG 2.2 success criterion for each. It flags images without a text alternative, form fields without a label, buttons and links with no accessible name, clickable elements that a keyboard cannot reach, focusable content hidden from assistive technology, personal-data fields without autocomplete, data tables without header cells and pa…
Output
Returns a JSON object containing the SKILL.md file name and UTF-8 content (the instructions an AI agent uses to perform WCAG accessibility reviews), the skill identifier, a SHA-256 checksum of the file, the version number, a settled x402 payment receipt with the Base transaction hash, and a re-download URL with a unique token for future free re-downloads.
Example use cases
Equipping agent with accessibility auditor
“Grab the accessibility review skill file from AISkills402 so my agent can start checking our landing pages for WCAG violations — pay the $0.03 and download it now.”
One-time purchase for reusable WCAG skill
“Buy the WCAG defect checker skill from AISkills402 once so I can re-download it any time — I want the SKILL.md file and the redownload token for safekeeping.”
Verifying accessibility skill integrity
“Download the accessibility-review SKILL.md from AISkills402 and give me the sha256 hash and the settlement transaction so I can confirm the file hasn't changed from version 1.0.0.”
Technical details
Endpoint
GEThttps://api.aiskills402.com/v1/skills/accessibility-review/file?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pre-tested, versioned SKILL.md instruction file that teaches an AI agent how to identify WCAG accessibility defects in HTML markup, and you want a one-time micropayment model (paid in USDC on Base via x402) with permanent re-download rights rather than a subscription or per-call SaaS API.
Side effects
- Payment not included or insufficient USDC — returns 402 Payment Required
- Invalid or malformed x402 payment header — payment rejected
- Network or settlement failure on Base — transaction not confirmed
- Re-download token expired or invalid on subsequent calls — 401 or 404
- File temporarily unavailable — 503 Service Unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"file": {
"name": "SKILL.md",
"content": "<the SKILL.md file>",
"encoding": "utf-8"
},
"name": "Accessibility Review: WCAG Defects in Markup",
"skill": "accessibility-review",
"sha256": "<sha256 of SKILL.md>",
"receipt": {
"tx": "0x<settlement transaction>",
"settled": true
},
"version": "1.0.0",
"redownload": {
"url": "<api>/v1/purchases/<token>",
"token": "<64 hex chars>"
}
}
}Tags
x402
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