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Blockchain Transaction Status Checker
x402
Blockchain Transaction Status Checker is a paid API for AI agents from x402-safe-upgrade-api.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-10).
Looks up the confirmation status of a blockchain transaction by hash on Base or Base Sepolia networks
Price / call$0.02
Success—
StatusUnknown
How this service works
Evidence-backed npm package upgrade decisions for coding agents.
Output
Returns a JSON object with the transaction status (e.g. 'success'), a confirmation field (e.g. 'confirmed'), and the number of confirmations as a string integer — giving the agent clear signal about whether a transaction has been finalized on-chain.
Example use cases
Verify x402 payment before delivering service
“Before I release the premium report, can you confirm that the Base transaction 0xd4f8a1...3c9e has been confirmed on mainnet?”
Debug a failed testnet transaction
“I sent a test transaction on base-sepolia with hash 0x7b3e2a...f501 — can you check its current status and how many confirmations it has so I know if it went through?”
Monitor payment finality for order fulfillment
“Check the status of transaction 0x9c1b44...e820 on Base mainnet — I need to know if it's confirmed with at least enough confirmations before I ship the order.”
Technical details
Endpoint
POSThttps://x402-safe-upgrade-api.onrender.com/v1/transaction-status?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify the on-chain confirmation status of a specific transaction on Base or Base Sepolia networks, particularly after an x402 micropayment has been submitted and you need to confirm finality before releasing a gated resource or service.
Side effects
- Invalid or malformed transaction hash returns an error
- Transaction not yet indexed returns pending or unknown status
- Wrong chain specified for the given transaction hash may return not found
- Network connectivity issues to Base RPC may cause timeouts
- Very recent transactions may show 0 confirmations or unconfirmed status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | |
| transactionHash | string | 0x-prefixed 32-byte public transaction hash. |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "success",
"confirmation": "confirmed",
"confirmations": "12"
}
}Tags
x402
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