B20 activation check · B20 Activation Check
GETBaseSolanaArbitrumPolygonMonadAvalancheeip155:1329OptimismFraxtaleip155:42220stellar:pubnetalgorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
$0.002
per call · USD Coin on Base
Is B20 live on Base mainnet? Queries the Activation Registry precompile for base.b20_asset and base.b20_stablecoin (or a custom feature id). Honest pre-launch too: reports not-activated until the registry flips. ?feature=base.b20_asset (optional)
Endpoint
GET https://agent402.tools/api/b20-activation-check4
Calls / 30d
1
Unique payers / 30d
Aug 31
Last called
exact
Payment scheme
Call this service
TypeScript · @x402/fetch
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://agent402.tools/api/b20-activation-check", {
method: "GET",
});
const data = await res.json();cURL
curl -X GET \
"https://agent402.tools/api/b20-activation-check" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"features": [
{
"activated": false,
"feature": "base.b20_asset",
"featureId": "0xcdcc…"
}
],
"registry": "0x8453000000000000000000000000000000000001"
}Payment details
Pay to
0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0Asset
USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913NetworksBase, Solana, Arbitrum, Polygon, Monad, Avalanche, eip155:1329, Optimism, Fraxtal, eip155:42220, stellar:pubnet, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=
Schemesexact, upto
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