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Semilla1 Lab txcheck — Batch Transaction Lookup
x402
Semilla1 Lab txcheck — Batch Transaction Lookup is a paid API for AI agents from semilla1-txcheck.netlify.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-28).
Looks up 1–10 Base mainnet transaction hashes and returns status, gas usage, ETH value, and USDC transfer details for each.
Price / call$0.05
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
Returns a JSON object with a count of hashes received, how many were found, and an array of per-transaction summaries. Each summary includes the tx hash, status ('ok' or 'fallida'), block number, from/to addresses, ETH value sent, gas used, fee in ETH, and an array of USDC transfer events (each with from, to, and USDC amount). If a hash was not found or is invalid, that entry returns a hash+error object instead.
Example use cases
Verify incoming USDC payment
“I just sent USDC on Base — can you check tx 0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168 and confirm the payment went through and who received how much USDC?”
Audit batch of DeFi transactions
“I have three Base transactions I need to review: 0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168, 0xabc1234500000000000000000000000000000000000000000000000000000001, and 0xdef6789000000000000000000000000000000000000000000000000000000002 — can you pull the status, gas, and any USDC transfers for all three at once?”
Debug a failed on-chain transaction
“My Base transaction 0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168 might have failed — can you look it up and tell me the status, gas consumed, and the block it landed in?”
Technical details
Endpoint
GEThttps://semilla1-txcheck.netlify.app/txs?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, structured summary of one or more Base mainnet transactions — especially when you care about USDC token transfers in the logs, which standard RPC calls don't surface cleanly. It is ideal for payment verification, DeFi audit trails, and on-chain receipt confirmation. Prefer it over raw RPC calls when you want a normalized JSON response with USDC transfer decoding included, and when batching up to 10 hashes to minimize round trips.
Side effects
- Hash not found on Base mainnet — returns {hash, error} in results array
- Invalid hash format — rejected by regex validation before payment
- More than 10 hashes submitted — exceeds batch limit
- RPC/network timeout fetching transaction from Base — possible partial results
- Payment (x402) not included or insufficient — 402 response before data is returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"found": 1,
"results": [
{
"to": "0x5ff137d4b0fdcd49dca30c7cf57e578a026d2789",
"eth": 0,
"from": "0x1278c1e48e3c9548a5d9f2b16dc27ed311b0697c",
"hash": "0x811a2f5f216a87810a8ce59e645836544df7a4b5a66b0a3b048087a904637168",
"block": 52920980,
"feeEth": 0.000009421146,
"status": "ok",
"gasUsed": 1570191,
"usdcTransfers": [
{
"to": "0xa4ba7f4fca58c50df7232ba65e8d794f78dc65bc",
"from": "0x26572ff23c6c52bfb1a69cb0c9114a8be443b422",
"usdc": 1
}
]
}
]
}
}Tags
x402
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