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Semilla1 Lab txcheck /receipt
x402
Semilla1 Lab txcheck /receipt is a paid API for AI agents from semilla1-txcheck.netlify.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-28).
Returns a structured receipt for a Base mainnet transaction, including status, gas usage, and USDC transfers parsed from logs.
Price / call$0.005
Success—
StatusUnknown
How this service works
Resumen de una transacción de Base: estado, gas, transferencias USDC. Pago x402 v2: 0.01 USDC en Base (lote de hasta 10: 0.05 USDC; /balance, /tokens, /receipt: 0.005 USDC).
Output
A JSON object containing the queried transaction hash, its status ('ok' or 'fallida'), block number, sender, recipient, ETH value sent, gas used, ETH fee paid, and an array of USDC transfers (each with from, to, and USDC amount) parsed from the transaction logs.
Example use cases
Verify a USDC payment on Base
“I just sent a USDC payment on Base — can you check transaction 0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168 and confirm it went through and how much USDC was actually transferred?”
Debug a failed Base transaction
“My transaction on Base might have failed — hash is 0xabc123...64hexchars. Can you look up its receipt and tell me if the status is ok or failed, and what gas it consumed?”
Audit transaction fees and transfers
“For the Base tx 0xdef456...64hexchars, can you give me a full breakdown: block number, ETH fee paid, and a list of all USDC transfers that happened in that transaction?”
Technical details
Endpoint
GEThttps://semilla1-txcheck.netlify.app/receipt?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured summary of a specific Base mainnet transaction — especially when you want USDC transfer amounts decoded from logs alongside basic receipt data (status, gas, fee). It is purpose-built for Base and USDC, making it more focused than a generic multi-chain explorer API. Prefer it for lightweight per-tx lookups rather than bulk historical queries.
Side effects
- Invalid or malformed transaction hash (not matching 0x + 64 hex pattern) returns a validation error
- Transaction hash not found on Base mainnet returns an error or empty result
- Network or RPC connectivity issues may cause timeouts
- Payment not received (x402) results in 402 response before data is returned
- Transaction exists but has no USDC transfers — usdcTransfers array will be empty
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"hash": "0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168",
"status": "ok",
"transfers": []
}
}Tags
x402
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