$0.05
per call · USD Coin on Base
x402 market intelligence with current catalog-attributed USDC flow, address-level demand signals and separately labeled value-matched history. The headline covers Base only (market.universeChains); the multi-chain picture ships alongside it as ecosystem, split into an RPC-proven floor and an indexed upper bound that are not additive (notASum). Attribution is not exclusive protocol-intent proof.
Endpoint
GET https://api.x402intel.uk/x402-market8
Calls / 30d
5
Unique payers / 30d
Sep 8
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.x402intel.uk/x402-market", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://api.x402intel.uk/x402-market" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"demand": {
"totalBuyers": 0
},
"ecosystem": {
"composition": [
{
"chain": "base",
"grade": "rpc_proven",
"measurementContract": "x402.attributed_volume_usd.catalog_auth_join.v1",
"provenFloorUsd": 0,
"volumeUsd": {
"movedTo": "provenFloorUsd",
"why": "no field spans two measurement contracts"
},
"withheldReason": null
}
],
"floor": {
"byContract": [
{
"chains": [
"base"
],
"contract": "x402.attributed_volume_usd.catalog_auth_join.v1",
"usd": 0
}
],
"chains": [
"base"
],
"grades": [
"rpc_proven"
],
"total": {
"status": "published",
"value": 0
}
},
"notASum": true,
"upperBound": {
"byContract": [
{
"chains": [
"base"
],
"contract": "x402.attributed_volume_usd.catalog_auth_join.v1",
"usd": 0
},
{
"chains": [
"solana"
],
"contract": "x402.facilitator_gasless_volume_usd.indexed_fee_payer_join.v1",
"usd": 0
}
],
"chains": [
"base",
"solana"
],
"total": {
"reason": {
"code": "incomparable_mix",
"contracts": [
"…",
"…"
]
},
"status": "withheld",
"value": null
}
},
"withheldChains": []
},
"generatedAt": "2026-07-19T00:00:00.000Z",
"market": {
"sellersOnBase": 0,
"sellersWithAttributedActivity": 0,
"sellersWithRealActivity": 0,
"universeChains": [
"base"
]
}
}Payment details
0x7b13107779cfda1beba3289d0fbe27310436f3e3USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Onchain Data and the homepage with a featured placement.
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