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Base Transaction Verifier
x402
Base Transaction Verifier is a paid API for AI agents from risk-api-production-af85.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Verifies a Base blockchain transaction by hash, returning validity status, sender, recipient, block number, and gas used
Price / call$0.01
Success—
StatusUnknown
How this service works
Verify any Base transaction by hash. Returns validity, from, to, block, gas used.
Output
Returns a structured response containing: whether the transaction is valid (boolean), the from address (sender), the to address (recipient), the block number it was included in, and the gas used for execution
Example use cases
Confirm payment received on-chain
“I need to confirm that the Base transaction 0xabc123def456... actually went through — can you verify it and tell me the sender, receiver, and whether it's valid?”
Audit transaction after DeFi trade
“I just executed a swap on Base with transaction hash 0x789xyz... — can you look it up and tell me the block it confirmed in and how much gas it consumed?”
Dispute resolution for crypto transfer
“Someone claims they sent me payment on Base blockchain — the transaction hash is 0xdeadbeef... — can you verify it and confirm who the from and to addresses are and if it's legitimate?”
Technical details
Endpoint
GEThttps://risk-api-production-af85.up.railway.app/tx-verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to confirm the on-chain status and details of a specific Base transaction by hash — ideal for verifying payments, auditing DeFi interactions, or resolving disputes about whether a transaction occurred. Prefer this over the batch endpoint when checking a single transaction. For risk scoring of a transaction before sending, use the sibling pre-send risk scoring endpoint instead.
Side effects
- Invalid or malformed transaction hash returns an error or invalid result
- Transaction hash not found on Base network (may not exist or be from another chain)
- Network latency or RPC downtime causing lookup failure
- Rate limiting or payment failure for the $0.01 USDC per call fee
- Transaction hash from a non-Base chain (e.g. Ethereum mainnet) may return not found
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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