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P0 Agent Economy Index – Listing Check
x402
P0 Agent Economy Index – Listing Check is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Checks whether a given URL is indexed in the x402 Bazaar, returning its rank, usage stats, pricing, and quality flags from a live snapshot.
Price / call$0.001
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
A JSON object indicating whether the URL is found in the x402 Bazaar snapshot, its 30-day call count, unique paying wallet count, USD price, rank within its tag, price percentile, leaders in the same tag, days until expiry, staleness flag, quality flags (e.g. missing icon, missing use-when phrase), actionable advice for improving the listing, snapshot age in seconds, and the source catalog URL.
Example use cases
Pre-launch listing verification
“Before I go live, can you check if https://myagentservice.dev/api/v1/summarize is already in the x402 Bazaar, what quality flags it has, and what advice P0 gives to improve the listing?”
Competitive rank benchmarking
“How does https://stableenrich.dev/api/fullenrich/people-search rank among other services in its tag on the x402 Bazaar, and who are the leaders I'm competing against?”
Expiry and staleness monitoring
“Check if https://datarouter.ai/api/weather/current is still active in the x402 Bazaar and whether it's at risk of expiring soon due to low recent activity.”
Technical details
Endpoint
GEThttps://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/listing-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify whether a specific x402 service URL is currently indexed in the Coinbase CDP Bazaar, check its real usage metrics (calls, payers), see how it ranks among peers in its tag, or get actionable quality advice for an existing listing. Prefer this over the broader market index endpoints when you have a specific resource URL to inspect rather than browsing a tag's top services.
Side effects
- URL not found in the Bazaar (found: false) — resource has never been indexed or has expired
- Stale snapshot — snapshot_age_s is high, meaning data may not reflect the latest state
- Missing or null stats — calls30d/payers30d may be null if CDP does not publish them for that resource
- Invalid URL format — queryParams.url must be a valid URI or the call will fail validation
- Resource expired — days_left is 0 or null, meaning CDP removed the listing after 30 days without settlement
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "expires_on is an estimate: lastCalledAt + 30 days (CDP removes resources after 30 days without a settlement).",
"as_of": "2026-10-03T17:20:14Z",
"flags": [
"no_icon",
"no_use_when_phrase"
],
"found": true,
"stale": false,
"advice": [
"Add resource.iconUrl (a square image URL); CDP shows it with the listing.",
"Say plainly when to use the route (for example 'Use when ...')."
],
"source": "Coinbase CDP x402 Bazaar discovery catalog (public); daily snapshots kept by P0",
"calls30d": 996,
"resource": "https://stableenrich.dev/api/fullenrich/people-search",
"days_left": 29,
"payers30d": 58,
"price_usd": 0.15,
"same_host": [],
"expires_on": "2026-11-02",
"source_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
"rank_in_tag": {
"of": 2,
"tag": "fullenrich",
"rank": 1
},
"last_called_at": "2026-10-03T06:59:55.809Z",
"leaders_in_tag": [
{
"has_icon": false,
"resource": "https://stableenrich.dev/api/fullenrich/people-search",
"payers30d": 58,
"price_usd": 0.15
},
{
"has_icon": false,
"resource": "https://stableenrich.dev/api/fullenrich/company-search",
"payers30d": 10,
"price_usd": 0.15
}
],
"snapshot_age_s": 660,
"price_percentile_in_tag": 0
}
}Tags
x402
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