Resolve 29 common ERC-20, ERC-165, ERC-721, ERC-1155, ERC-2612, and ERC-3009 selectors wit
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.
1000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-01
updated
Provider
apiacre.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0xa0BFa4f07281c9b248DC3AED2217836BcA24869B",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "1000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "B4CHWQeQn7GDLZD2aW6hpGG2bEseisBFLZYECA3HDLan",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "1000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"calldata": "0xa9059cbb0000000000000000000000001111111111111111111111111111111111111111000...",
"input_mode": "auto"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"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"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"calldata": {
"type": "string"
},
"function_signature": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"input_mode": {
"enum": [
"auto",
"selector_and_arguments",
"arguments_only"
],
"type": "string"
}
},
"required": [
"calldata"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"arguments": {
"items": {
"type": "object"
},
"type": "array"
},
"canonicalSignature": {
"type": "string"
},
"encoding": {
"type": "object"
},
"function": {
"type": "string"
},
"inputMode": {
"type": "string"
},
"resolution": {
"type": "object"
},
"selector": {
"type": "string"
},
"selectorPresent": {
"type": "boolean"
},
"signature": {
"type": "string"
},
"signatureSource": {
"type": "string"
},
"types": {
"items": {
"type": "string"
},
"type": "array"
},
"values": {
"items": {},
"type": "array"
},
"warnings": {
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"meta": {
"properties": {
"cached": {
"type": "boolean"
},
"duration_ms": {
"type": "integer"
},
"next_actions": {
"items": {
"type": "object"
},
"type": "array"
},
"sources": {
"items": {
"type": "string"
},
"type": "array"
},
"warnings": {
"items": {
"type": "string"
},
"type": "array"
}
},
"required": [
"duration_ms",
"cached",
"sources",
"warnings",
"next_actions"
],
"type": "object"
},
"request_id": {
"type": "string"
},
"service": {
"type": "string"
},
"version": {
"type": "string"
}
},
"required": [
"request_id",
"service",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
}Use it
curl
curl "https://apiacre.com/v1/crypto/calldata-decode" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://apiacre.com/v1/crypto/calldata-decode");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://apiacre.com/v1/crypto/calldata-decode")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/2575.json, and this resource appears in /discovery/resources and /discovery/search.