$0.001
per call · USD Coin on Base
Resolve 29 common ERC-20, ERC-165, ERC-721, ERC-1155, ERC-2612, and ERC-3009 selectors without a network lookup, or strictly decode arbitrary Ethereum or EVM calldata using a supplied Solidity signature.
Endpoint
POST https://apiacre.com/v1/crypto/calldata-decode2
Calls / 30d
1
Unique payers / 30d
Sep 1
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://apiacre.com/v1/crypto/calldata-decode", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"calldata": "0xa9059cbb0000000000000000000000001111111111111111111111111111111111111111000...",
"input_mode": "auto"
}),
});
const data = await res.json();curl -X POST \
"https://apiacre.com/v1/crypto/calldata-decode" \
-H "Content-Type: application/json" \
-d '{"calldata":"0xa9059cbb0000000000000000000000001111111111111111111111111111111111111111000...","input_mode":"auto"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"data": {
"arguments": [
{
"index": 0,
"type": "address",
"value": "0x1111111111111111111111111111111111111111"
}
],
"canonicalSignature": "transfer(address,uint256)",
"encoding": {
"argumentBytes": 64,
"argumentsSha256": "d3458da251349437abe3549042a49868dc5528422a63bb815f3e0b46725052c9",
"calldataBytes": 68,
"calldataSha256": "f77b5da6ef3efa41f5084d653dc4a135a3978d541db97ce13225bd442b025198",
"canonical": true
},
"function": "transfer",
"inputMode": "selector_and_arguments",
"resolution": {
"candidateCount": 1,
"candidates": [
"transfer(address,uint256)"
],
"matchedStandards": [
"ERC-20"
],
"method": "built_in_standard",
"signatureProvided": false
},
"selector": "0xa9059cbb",
"selectorPresent": true,
"signature": "transfer(address,uint256)",
"signatureSource": "built_in_standard",
"types": [
"address",
"uint256"
],
"values": [
"0x1111111111111111111111111111111111111111",
42
],
"warnings": [
"Selector resolution is limited to 29 published standard signatures; four-byte..."
]
},
"meta": {
"cached": false,
"duration_ms": 42,
"next_actions": [],
"sources": [],
"warnings": []
},
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
"service": "crypto.calldata-decode",
"version": "1"
}Payment details
0xa0bfa4f07281c9b248dc3aed2217836bca24869bUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Onchain Data and the homepage with a featured placement.
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