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Sift Web Tools – Crypto Transaction Lookup
x402
Sift Web Tools – Crypto Transaction Lookup is a paid API for AI agents from sift.srv1996466.hstgr.cloud, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Looks up details of a blockchain transaction by hash and returns block number, status, native value, and token transfers
Price / call$0.002
Success—
StatusUnknown
How this service works
Transaction details: status, from, to, value, fee, token transfers. Looks up a transaction hash on ethereum, base, arbitrum, optimism or polygon: status, block, time, from, to, value, gas fee, method id and every ERC-20 transfer in it.
Output
Returns a JSON object containing the block number the transaction was included in, its status (e.g. 'success' or 'failed'), the native value transferred, and an array of token transfer events associated with the transaction.
Example use cases
Verify crypto payment receipt
“I just received a payment — the transaction hash is 0xd93f...1ab2 on Base. Can you check if it was successful and how much native value was sent?”
Debug a failed on-chain transfer
“This transaction 0x7c1e...99df on Base didn't seem to go through — can you look it up and tell me its status and what block it's in?”
Audit token transfers in a tx
“For transaction hash 0xa21b...44cc on Base, can you pull all the token transfers that happened and list them for me?”
Technical details
Endpoint
GEThttps://sift.srv1996466.hstgr.cloud/v1/crypto/tx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to programmatically verify the outcome of a specific blockchain transaction — especially on Base — including its confirmation status, block placement, native ETH value, and ERC-20/token transfer events. It is pay-per-call with no subscription required and only charges on success, making it suitable for on-demand agent workflows that don't query transactions at high frequency.
Side effects
- Invalid or malformed transaction hash returns an error response
- Transaction hash not found on the specified chain returns not-found error
- Unsupported chain identifier causes an error
- Payment not processed (non-200) means no charge is made but no data is returned
- Network or upstream RPC timeout may cause temporary failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"block": 52772746,
"status": "success",
"value_native": 0,
"token_transfers": []
}
}Tags
x402
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