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xub x402 Market Intelligence Search
x402
xub x402 Market Intelligence Search is a paid API for AI agents from xub.me, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-22).
Searches and monitors the x402 paid-API marketplace to discover HTTP and MCP endpoints, their pricing, and recent changes.
Price / call$0.005
Success—
StatusUnknown
How this service works
Machine-first x402 procurement intelligence and paid utilities.
Output
Returns a JSON object containing the matched x402 resources array, total indexed resource count, number of matched results, timestamps for when the index was captured and checked, and a list of recent changes to the dataset.
Example use cases
Discover paid AI tools for an agent
“Search the x402 marketplace for up to 15 HTTP POST endpoints related to 'language model' so my agent can find machine-payable LLM APIs it can call directly.”
Monitor new x402 endpoints
“Check the x402 market index for any recently changed or added endpoints — just show me what's new, limit to 20 results.”
Find MCP tools by capability
“I want to find up to 5 MCP-type tools on the x402 network related to 'web scraping' so my agent can pay and use them automatically.”
Technical details
Endpoint
POSThttps://xub.me/api/tools/x402-market-search/invoke?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to programmatically discover or monitor x402-compatible paid API endpoints — especially when searching by capability, HTTP method, or endpoint type (HTTP vs MCP). Prefer this over manual API directories when you need machine-readable results, recent-change tracking, or automated procurement intelligence within the x402 micropayment ecosystem.
Side effects
- Empty results if query matches no indexed endpoints (matched: 0, resources: [])
- Stale data if capturedAt timestamp is old and index hasn't refreshed
- Payment failure if $0.005 USDC micropayment is not fulfilled via x402 protocol
- Invalid enum value for 'type' or 'method' fields causes request rejection
- Query exceeding 200 characters is rejected
- Limit outside 1-20 range is rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| type | string | |
| limit | integer | |
| query | string | |
| method | string | |
| network | string | |
| changesOnly | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"tool": "x402-market-search",
"result": {
"dataset": "x402-market",
"matched": 0,
"checkedAt": null,
"resources": [],
"capturedAt": null,
"recentChanges": [],
"indexedResources": 0
},
"version": "1"
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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