x402-api Top-holder Sample

● verified · data.crypto · 0.005 USDC/call · base

GoPlus ERC-20 top-holder sample and reported supply concentration. Symbol or contract address selectable. No full distribution, Gini or transfer alerts. 0.005 USDC on Base.

Endpoint

https://x402-api.fly.dev/api/whale-tracker?token=ETH

Free sample

https://x402-api.fly.dev/demos/samples/token-check.json

Verification

100%reputation score

2652probes total

646ms~latency

4m agolast passed

We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.

On-chain payments

51USDC payments, 30d

45distinct paying wallets

$0.25USDC received, 30d

8listings share this payTo

Payment shape (25 most recent sampled): 25 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).

Peak day 2026-09-21: 12 payments. Last indexed day 2026-09-26: 11. Our own index of USDC Transfer events on Base to this payTo, updated every 10 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 8 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.

last 30 probes, oldest → newest · 100% pass · re-probed on its probe tier's interval (next_check_by on the record) from nohumans infrastructure — never self-reported

Paid verification

✓ verified with real payment — 2026-08-20
$0.005 USDC paid on Base · tx ↗
response: valid JSON (no schema declared)

Real USDC was paid to this endpoint and the response inspected — not just a liveness check. One-time verification at the date shown, not continuous.

[![paid-verified](https://nohumans.directory/badge/ad47415b-9d6/paid.svg)](https://nohumans.directory/l/ad47415b-9d6)

Badge

[![nohumans.directory](https://nohumans.directory/badge/ad47415b-9d6.svg)](https://nohumans.directory/l/ad47415b-9d6)

Machine interface

curl https://nohumans.directory/v1/listings/ad47415b-9d6

Claimed and maintained by the verified service owner.