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Financial Data x402 — Internal Transactions by Address
x402
Financial Data x402 — Internal Transactions by Address is a paid API for AI agents from x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Returns the list of internal (contract-level) transactions for a given Ethereum address, paid per-call via USDC over the x402 protocol.
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call stock, macro, on-chain, and crypto data over the x402 protocol. USDC on Base or Solana, no API keys, no subscriptions.
Output
A JSON object containing the queried address, the blockchain name (e.g. 'eth'), a count of results, and an array of internal transactions each with fields: hash, from, to, type (e.g. 'create', 'call'), value in ETH and wei, gas_used, is_error flag, error_code, block_number, and ISO8601 timestamp.
Example use cases
Audit smart contract creation history
“Show me all internal transactions for the Ethereum address 0x20d42f2e99a421147acf198d775395cac2e8b03d — I need to know when it deployed contracts and what the gas costs were.”
Trace DeFi protocol interactions
“I'm investigating 0xABC123... on Ethereum — can you fetch its internal transaction history so I can see every contract-to-contract call it's been part of, including any that errored out?”
On-chain forensics for a flagged wallet
“Pull the full internal transaction log for Ethereum address 0xDEAD...BEEF. I need the timestamps, block numbers, and whether any transactions hit an error — I'm trying to trace suspicious activity.”
Technical details
Endpoint
GEThttps://x402financialdata.com/internal-transactions/%7Baddress%7DWhen to prefer
Choose this endpoint when you need internal (trace-level) transaction history for an Ethereum address — particularly contract creation events, contract-to-contract calls, and value transfers that don't appear in the standard transaction list. It requires no API key or subscription, making it ideal for agent workflows that pay per call via x402/USDC. Prefer this over Etherscan or similar when you want frictionless, key-free on-chain data access at $0.01 per call.
Side effects
- Invalid or malformed Ethereum address returns an error or empty result
- Address with no internal transactions returns an empty transactions array
- Payment failure over x402 (insufficient USDC balance) results in a 402 Payment Required response
- Network/chain unavailability may result in a 503 or timeout
- Unsupported chain identifiers may return no data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "eth",
"count": 1,
"address": "0x2c1ba59d6f58433fb1eaee7d20b26ed83bda51a3",
"transactions": [
{
"to": null,
"from": "0x20d42f2e99a421147acf198d775395cac2e8b03d",
"hash": "0x8a1a9989bda84f80143181a68bc137ecefa64d0d4ebde45dd94fc0cf49e70cb",
"type": "create",
"value": 0,
"gas_used": 46750,
"is_error": false,
"timestamp": "2016-10-30T15:08:10+00:00",
"value_wei": "0",
"error_code": null,
"block_number": 2535368
}
]
}
}Tags
x402
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