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x402 Bazaar Rank – Metadata Tag Discovery
x402
x402 Bazaar Rank – Metadata Tag Discovery is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.032/call, status unknown (last checked 2026-10-23).
Returns a ranked list of x402 services tagged 'metadata', scored by real 30-day call volume and payer counts, with a snapshot hash receipt.
Price / call$0.032
Success—
StatusUnknown
How this service works
An open index of the machine-to-machine (agent) economy. x402 routes: ranked discovery over the live x402 service market, every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision. /economy routes, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contracts and MCP servers (Official MCP Registry): each protocol's published figures (agent or server counts, transactions or payment events; payers and USD volume only where the source publishes them: payers for x402 and Tempo MPP, USD volume for x402 and Virtuals ACP), each with its unit, window and source; units differ, so totals are not summed. L402 and per-service MPP listings are not covered.
Output
Returns a JSON object with: total matched count, the query parameters used, the route called, a list of up to 25 ranked services each with name, network ID, 30-day call count, price in USD, resource URL, and 30-day payer count, plus a 'declaredBy' field and an ISO timestamp with a snapshot hash for auditability.
Example use cases
Leaderboard of top metadata APIs
“Pull the top 25 x402 services in the metadata category ranked by paying wallets over the last 30 days — I want to see which ones have real traction.”
Validating a service's market position
“I'm evaluating whether to build on an x402 metadata API — can you check the bazaar rank for metadata-tagged services and tell me how many active payers the top options have had this month?”
Market research for x402 ecosystem
“Give me a ranked snapshot of all x402 services tagged metadata, sorted by call volume for the past 30 days, so I can compare pricing and usage across the ecosystem.”
Technical details
Endpoint
GEThttps://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-metadata?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need ranked, usage-verified discovery of x402 services in the metadata category, backed by real 30-day on-chain payment data rather than self-reported metadata. Prefer it over generic API directories when you want trustworthy popularity signals (payer wallet counts, call volumes) and an auditable snapshot receipt. Not suitable for discovering services outside the x402 protocol or for categories other than metadata.
Side effects
- Payment not included or invalid USDC payment header — returns 402 Payment Required
- No services match the metadata tag filter — returns count:0 with empty services array
- Snapshot data stale or hash mismatch — receipt may reference outdated scoring revision
- Rate limiting or worker timeout on Cloudflare edge — returns 5xx
- Malformed query parameters — returns error or unexpected empty result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 25,
"query": {
"by": "payers",
"op": "top",
"limit": 25,
"where": {
"tag": "metadata"
}
},
"route": "/in-metadata",
"matched": 359,
"services": [
{
"name": "forecast api",
"network": "eip155:8453",
"calls30d": 310,
"priceUsd": 0.01,
"resource": "https://api.example.com/forecast",
"payers30d": 42
}
],
"declaredBy": "agent",
"generatedAt": "2026-09-17T12:00:00.000Z"
}
}Tags
x402
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