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Agent Market Lab URL Resolver
x402
Agent Market Lab URL Resolver is a paid API for AI agents from agent-market-lab.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Inspects a public URL to detect x402 payment walls, machine-readiness signals, and payment-required paths
Price / call$0.002
Success—
StatusUnknown
How this service works
Machine-native paid utilities for autonomous agents
Output
Returns a JSON object with the target URL, a list of discovered paths (each with path, HTTP status, content type, and paymentRequired flag), a boolean x402Detected field indicating whether an x402 payment wall was found, and a numeric machineReadinessScore (0-100) indicating how suitable the site is for autonomous agent consumption.
Example use cases
Detecting x402 support before agent call
“Before my agent tries to call https://api.someservice.com/data, can you check if it has an x402 payment wall and how machine-ready it is?”
Auditing a new API marketplace listing
“I found a new API at https://market.agenttools.io — can you probe it to see which paths are discoverable, whether any require payment, and what its machine-readiness score is?”
Verifying agent-accessible public endpoint
“Check https://data.openresearch.org to see if it's accessible to autonomous agents without payment walls, and list any paths it exposes along with their content types.”
Technical details
Endpoint
GEThttps://agent-market-lab.vercel.app/api/resolve?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to determine before making a call whether a target URL supports the x402 micropayment protocol, requires payment, or is generally machine-readable. Ideal for agent orchestration flows that need to pre-screen APIs or web resources for agent compatibility without committing to a payment or full crawl.
Side effects
- Invalid or malformed URL returns a validation error
- Unreachable or offline target URL may return a timeout or connection error
- Private/internal URLs inaccessible from the resolver's network return no discovered paths
- Sites with aggressive bot-blocking may return incomplete or misleading discovery results
- Non-HTTP/HTTPS URLs are rejected by schema validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"target": "https://example.com/",
"discovered": [
{
"path": "/robots.txt",
"status": 200,
"contentType": "text/plain",
"paymentRequired": false
}
],
"x402Detected": false,
"machineReadinessScore": 30
}
}Tags
x402
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