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x402 Data API – Top APIs by Payers or Calls
x402
x402 Data API – Top APIs by Payers or Calls is a paid API for AI agents from data.kagurazaka.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns the top-ranked x402 APIs by distinct payers or total calls in the last 30 days, with price and uptime data, optionally filtered by category.
Price / call$0.002
Success—
StatusUnknown
How this service works
Data about the x402 market: the CDP Bazaar's listings, sellers, prices and categories, new listings and price changes from snapshots every 6 hours, uptime we measure for every paid listing, and x402 spending of any wallet and revenue of any seller on Base.
Output
A JSON object containing the ranking metric used ('by': 'payers' or 'calls') and an array of results, each with the API resource URL, number of calls in the last 30 days, price in USD, number of distinct payers in the last 30 days, and measured uptime over 30 days.
Example use cases
Discover trending AI APIs
“What are the top 10 x402 APIs in the LLM & AI category right now, ranked by how many distinct users have paid for them in the last 30 days?”
Find most-called APIs for integration
“List the top 20 x402 APIs ranked by total calls over the last 30 days — I want to see which ones are getting the heaviest usage regardless of category.”
Scout popular finance APIs
“Can you pull the top 5 x402 finance APIs sorted by number of distinct payers, with their prices and uptime? I'm evaluating which ones to build on.”
Technical details
Endpoint
GEThttps://data.kagurazaka.dev/v1/market/top?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a ranked leaderboard of x402 APIs by adoption (payers) or usage volume (calls), especially when you want to discover which APIs are most actively used in the x402 ecosystem. Prefer this over the uptime-ranked endpoint when popularity/demand is the primary signal, and over the origins endpoint when you want cross-seller rankings rather than a single seller's portfolio.
Side effects
- Invalid 'by' value (not 'payers' or 'calls') returns a validation error
- limit out of range (< 1 or > 50) returns an error
- Invalid category enum value returns an error
- Payment failure or insufficient USDC balance returns 402
- Service unavailable returns 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"by": "payers",
"results": [
{
"resource": "https://api.example/v1/x",
"calls_30d": 6956,
"price_usd": 0.005,
"payers_30d": 227,
"uptime_30d": 1
}
]
}
}Tags
x402
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