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x402 Trust & Discovery API — Leaderboard
x402
x402 Trust & Discovery API — Leaderboard is a paid API for AI agents from gkyf2bs3b4p35hwwg5zzsnejeu.srv.us, paid per call via x402, $0.02/call, status down (last checked 2026-10-01).
Returns a ranked leaderboard of top x402/MPP endpoints or sellers by revenue, call volume, or unique payers on Base
Price / call$0.02
Success—
StatusDown
How this service works
Independent pre-purchase safety and reputation checks for x402 and MPP endpoints, plus keyless onchain data on Base. Accepts BOTH EIP-3009 and Circle Gateway credentials — only 141 of 788 Base-payable resources do, and a single-credential buyer is locked out of 53.8% of this market on one rail or 28.3% on the other. GET /v1/guard?url=&credential= answers whether the credential you carry can pay a given endpoint at all, before you try. Searching this market for "is this API endpoint a scam" returns registries and explorers but no dedicated service; that gap is what /v1/guard fills, inspecting an endpoint WITHOUT paying it and returning a go / test-with-minimum / do-not-pay verdict backed by onchain settlement history.
Output
A ranked JSON list of up to 50 endpoints or sellers, ordered by the chosen metric (revenue, calls, or payers), showing onchain-derived statistics aggregated from Base settlement history.
Example use cases
Discover top-earning x402 APIs
“What are the top 20 x402 endpoints ranked by revenue? I want to see which pay-per-call APIs are making the most money on Base.”
Find most active API sellers
“Who are the top 10 sellers in the x402 ecosystem ranked by number of calls? I want to know which API publishers are getting the most traffic.”
Identify APIs with broadest buyer reach
“Give me a leaderboard of the top 15 x402 endpoints ranked by number of unique payers — I want to find the APIs with the widest adoption among buyers.”
Technical details
Endpoint
GEThttps://gkyf2bs3b4p35hwwg5zzsnejeu.srv.us/v1/leaderboard?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a ranked overview of the x402/MPP ecosystem — e.g. to discover high-traffic or high-revenue endpoints, identify top sellers, or benchmark a specific API against the market. Prefer this over the /v1/guard endpoint when you want aggregate market intelligence rather than a safety check on a specific URL.
Side effects
- Invalid 'by' value (not revenue/calls/payers) — likely returns 400 or empty result
- Invalid 'of' value (not endpoints/sellers) — likely returns 400
- limit out of range (>50 or <1) — may return 400 or clamp to bounds
- No data available yet — returns empty array
- Service unavailable — non-2xx response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| by | string | Rank by revenue, calls or payers. |
| of | string | endpoints or sellers. |
| limit | integer | Maximum rows, 1-50. |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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