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Explorer Gateway API – Bitcoin Transaction Lookup
x402
Explorer Gateway API – Bitcoin Transaction Lookup is a paid API for AI agents from api.blockchain.info, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-29).
Looks up detailed information about a specific Bitcoin transaction by its transaction ID via the Blockchain.info explorer gateway
Price / call$0.001
Success—
StatusUnknown
How this service works
Blockchain explorer gateway — Solana, Bitcoin, Bitcoin Cash, Ethereum
Output
A JSON object containing detailed Bitcoin transaction data including inputs (source addresses and amounts), outputs (destination addresses and amounts), total value transferred, miner fee, block height, number of confirmations, transaction timestamp, and transaction size in bytes.
Example use cases
Verify a received Bitcoin payment
“I need to confirm that the Bitcoin payment I received actually went through — the txId is f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16. Can you check how many confirmations it has and how much BTC was sent?”
Audit a suspicious outgoing transfer
“Someone claims they sent me 0.5 BTC three hours ago with txId 3a1b9e330d32fef1ee42f8e86420d2be978ebb1d97df1cb6f5b5b6d5a4bf78a2 — can you look that up on Blockchain.info and tell me the actual amount, destination addresses, and current confirmation count?”
Retrieve on-chain fee for accounting
“I need to record the exact miner fee paid for Bitcoin transaction 6f7cf9580f1c2dfb3c4d8d043cd2d9e8b02dc19bc8b4c8a0f6fc8fc71f7a5c4d for my bookkeeping — can you fetch the transaction details from the blockchain explorer?”
Technical details
Endpoint
POSThttps://api.blockchain.info/explorer-gateway-kt/x402/btc/transaction?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative Bitcoin transaction data sourced directly from Blockchain.info's explorer infrastructure, particularly when you have a specific txId and need confirmation status, input/output details, or fee information. Prefer this over general-purpose RPC nodes when you want a simple REST/JSON interface without running your own Bitcoin node. The x402 micropayment model ($0.001 USDC per call) makes it cost-effective for low-to-moderate query volumes.
Side effects
- Invalid or malformed txId returns an error or empty response
- Transaction not yet propagated to the network returns not-found
- Network timeout or gateway unavailability returns a 5xx error
- Unconfirmed mempool transactions may have incomplete block/confirmation data
- Payment of 0.001 USDC required per call — insufficient balance causes rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| txId | string |
Output
Schema · Response
{
"type": "json",
"format": "application/json"
}Tags
x402
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