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AISkills402: OpenAPI Operation Object From An Example Call
x402
AISkills402: OpenAPI Operation Object From An Example Call is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Downloads a SKILL.md file that teaches an AI agent how to generate an OpenAPI Operation Object from an example HTTP call, purchased once via x402 micropayment in USDC on Base.
Price / call$0.01
Success—
StatusUnknown
How this service works
OpenAPI Operation Object From An Example Call — Writes one OpenAPI 3.1 operation object, as bare JSON, from an example request, an example response and rules given in words - parameters with the right location, requirement flag and type, a request body, and a response per status the person actually showed. Uses the 3.1 forms, not the 3.0 ones - a field that may be null is a type list with "null" (never nullable), a path parameter is always required, a status is a quoted key, an identifier writt…
Output
Returns a JSON object containing the SKILL.md file (name, UTF-8 content, SHA256 hash), the skill's name and identifier, a version string, a blockchain settlement receipt with transaction hash, and a redownload URL and token for future free re-downloads of the same or updated versions.
Example use cases
Auto-document a new REST API
“I've been calling a third-party API by hand and I want you to learn how to write proper OpenAPI Operation Objects from those example requests — can you purchase the openapi-operation-from-example skill from AISkills402 so you can do that for me going forward?”
Bootstrap an OpenAPI spec from curl examples
“I have a bunch of example curl commands and I need you to turn them into OpenAPI operation definitions — go buy the SKILL.md that teaches you how to do that from AISkills402 using a GET request.”
Equip an agent pipeline with OpenAPI generation
“Our agent pipeline needs to be able to produce OpenAPI Operation Objects automatically from HTTP call examples — please purchase and download the openapi-operation-from-example skill file from AISkills402 so we can wire it in.”
Technical details
Endpoint
GEThttps://api.aiskills402.com/v1/skills/openapi-operation-from-example/file?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a tested, reusable SKILL.md instruction file specifically for generating OpenAPI Operation Objects from example HTTP calls, and you want a one-time purchase model with permanent ownership and free re-downloads rather than a subscription or per-use API. Ideal for agent pipelines that need to self-document APIs or scaffold OpenAPI specs from live traffic.
Side effects
- Payment not settled on Base — transaction pending or failed, receipt shows settled:false
- Invalid or missing required input fields (type or method) — 400 Bad Request
- Method not allowed — only GET and HEAD are accepted
- Insufficient USDC balance to cover $0.01 micropayment via x402
- Network timeout during blockchain settlement
- Redownload token expired or invalid when re-fetching
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": "OpenAPI Operation Object From An Example Call",
"skill": "openapi-operation-from-example",
"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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