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BlockRun On-Chain Transaction Lookup
x402
BlockRun On-Chain Transaction Lookup is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.0075/call, status down (last checked 2026-10-30).
Fetches detailed data for a specific on-chain transaction by hash and chain identifier
Price / call$0.0075
Success—
StatusDown
How this service works
BlockRun independently tests AI agents that move money: did they pay the right party the right amount, avoid being scammed, stay within their mandate, and tell the truth afterwards. Scored from the ledger, not by a model judge.
Output
Returns structured data about the specified on-chain transaction including block number, timestamp, sender, recipient, value, token transfers, gas used, and confirmation status for the requested chain.
Example use cases
Example prompt
“Can you look up the details of this Solana transaction for me — hash 5xK9...abc — and tell me what was transferred, who sent it, and whether it confirmed?”
Technical details
Endpoint
GEThttps://blockrun.ai/api/v1/surf/onchain/tx?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to resolve a specific transaction hash to its full on-chain details across Base or Solana without managing your own RPC infrastructure or API keys — especially useful for AI agents that need pay-per-call access with no setup overhead.
Side effects
- Invalid or malformed transaction hash returns an error response
- Unsupported chain identifier returns a 400 or similar error
- Transaction not yet indexed or very recent may return not-found
- Payment failure (402) if USDC balance is insufficient for the $0.0075 per-call fee
- Network timeout if the underlying RPC is slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hash | string | Required query param |
| chain | string | Required query param |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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