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AISkills402 SKILL.md Review File Download
x402
AISkills402 SKILL.md Review File Download is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-27).
Downloads the SKILL.md file for the 'SKILL.md Review' skill after payment via x402, returning the file content, version, and a redownload token.
Price / call$0.05
Success—
StatusUnknown
How this service works
SKILL.md Review: Safe and Within the Limits — Reviews a SKILL.md file before you install, buy or publish it and lists every problem with a fixed code, the place and a fix, then gives one verdict. It checks the front matter against the published limits (name up to 64 characters in lowercase, hyphens and digits, no reserved words; description present, up to 1,024 characters, naming both its job and the requests that should trigger it, in the third person), and it reads the body for hidden orders …
Output
Returns a JSON object containing: the SKILL.md file name and UTF-8 content, the skill identifier ('skill-md-review'), a SHA256 hash of the file, the current version string (e.g. '1.0.0'), a payment receipt with the on-chain settlement transaction hash and settled status, and a redownload URL and token (64 hex characters) for future free re-downloads.
Example use cases
Agent workflow SKILL.md compliance check
“Fetch the SKILL.md Review skill file from AISkills402 so my agent can start validating that our published SKILL.md files are safe and within the stated limits — I need the file content and the redownload token.”
One-time skill purchase for reuse
“Purchase the SKILL.md Review skill once from AISkills402 and save the redownload token — I don't want to pay again every time I need the file.”
Verify skill file integrity after download
“Download the SKILL.md Review skill from AISkills402 and give me the SHA256 hash so I can confirm the file hasn't been tampered with before I integrate it into my pipeline.”
Technical details
Endpoint
GEThttps://api.aiskills402.com/v1/skills/skill-md-review/file?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a tested, versioned SKILL.md file specifically for reviewing and validating other SKILL.md documents, and the agent operates in an x402-enabled payment environment using USDC on Base. It is the right choice when you want a one-time purchase with permanent redownload rights rather than a subscription or per-call fee for repeated access.
Side effects
- Payment not included or insufficient — x402 payment challenge returned, agent must retry with correct USDC payment on Base
- Invalid HTTP method — only GET and HEAD are accepted
- Network or server error — endpoint unavailable, agent should retry
- Payment settled but file delivery failed — agent should use the redownload token to retry retrieval
- Expired or invalid redownload token — redownload URL no longer valid
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": "SKILL.md Review: Safe and Within the Limits",
"skill": "skill-md-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
Reviews
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Zero review prompt (fires after every successful call)
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