Decode transaction input data into a function name and arguments for ERC-20, NFT...
https://saylorinnovations.com/api/chain/decode-calldataOverview
Decode transaction input data into a function name and arguments for ERC-20, NFT, DEX router, multicall and ownership calls. Computed locally.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
crypto/nft
Provider
Saylor Innovations Data Desk
Source
bazaar
Indexed
2026-10-21 04:24:46
Health
Status
degraded
Latency (p50)
503ms
Uptime (30d)
100.0%
Reliability Score
90/100
Last Checked
2026-10-28 16:17:15
Last Healthy
2026-10-28 14:18:57
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"method": "GET",
"queryParams": {
"data": "0xa9059cbb000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa9604500000000000000000000000000000000000000000000000000000000000f4240"
},
"type": "http"
}
Output Schema
{
"example": {
"argument_words": null,
"arguments": {
"amount": "1000000",
"to": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
},
"calldata_bytes": 68,
"function_name": "transfer",
"note": "Decoded locally with a built-in list of common functions. Addresses are checksummed and integers are shown as decimal strings in base units.",
"recognized": true,
"selector": "0xa9059cbb",
"signature": "transfer(address,uint256)",
"source": "Computed locally (viem ABI decoding)"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-10-28 16:17:15 | degraded | 402 | 1277ms | |
| 2026-10-28 15:24:26 | degraded | 402 | 934ms | |
| 2026-10-28 14:18:57 | healthy | 402 | 2345ms | |
| 2026-10-28 07:03:16 | healthy | 402 | 1644ms | |
| 2026-10-28 05:40:17 | healthy | 402 | 433ms | |
| 2026-10-28 04:42:41 | healthy | 402 | 1369ms | |
| 2026-10-28 03:48:38 | healthy | 402 | 503ms | |
| 2026-10-28 02:49:01 | healthy | 402 | 341ms | |
| 2026-10-28 01:44:34 | healthy | 402 | 256ms | |
| 2026-10-28 00:38:18 | healthy | 402 | 328ms | |
| 2026-10-27 23:41:54 | healthy | 402 | 202ms | |
| 2026-10-27 22:55:42 | healthy | 402 | 352ms | |
| 2026-10-27 21:45:03 | healthy | 402 | 465ms | |
| 2026-10-27 20:30:19 | healthy | 402 | 666ms | |
| 2026-10-27 19:25:00 | healthy | 402 | 895ms | |
| 2026-10-26 11:19:27 | healthy | 402 | 465ms | |
| 2026-10-26 04:44:09 | healthy | 402 | 624ms |