# Internal Transaction History

> Internal Transaction History is a paid API for AI agents from www.x402financialdata.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns recent internal Ethereum transactions (value transfers triggered by contract calls, such as swaps, withdrawals, and contract creations) for a given wallet or contract address via Etherscan V2 API.

## Facts

- Endpoint: GET https://www.x402financialdata.com/internal-transactions/:address
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/internal-transaction-history-7ce57ebc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lLYP6L4DIulxXXMnoLqO6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability internal-transaction-history-7ce57ebc
```

Example prompt: Pull up to 50 internal transactions for Ethereum address 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe — I want to see the contract-triggered fund movements like swaps and withdrawals that wouldn't show up in a normal transaction list.

## When to prefer this

Use this endpoint when you need to see the actual fund movements triggered by smart contract execution for an Ethereum address — swaps, withdrawals, and contract creations that are invisible in a normal transaction list. It is essential for DeFi activity analysis, contract auditing, and tracing where ETH actually moved as a result of a contract call. Prefer this over a standard transaction list when investigating DeFi protocols, contract interactions, or unexplained balance changes.

## Known failure modes

- Invalid or malformed Ethereum address returns an error
- Address with no internal transactions returns an empty list
- Limit parameter exceeding 100 may be rejected or capped
- Chain parameter other than 'eth' is not supported and will return an error
- Etherscan API downtime or rate limiting may cause failures
- Payment of $0.01 USDC not included or rejected causes 402 response

## How this service works

Recent internal transactions (value transfers triggered by a contract call -- swaps, withdrawals, contract creations) for a wallet or contract address on Ethereum, from Etherscan's V2 API. These never show up in a normal txlist but often carry the actual fund movement. Supports optional limit (default 25, max 100). $0.01/call.

## Output

A list of up to 100 internal Ethereum transactions for the specified address, each including details such as the calling contract, from/to addresses, transferred ETH value, function call type (call, delegatecall, create, etc.), gas used, and block/timestamp context. These are value transfers triggered by contract execution that do not appear in the standard external transaction list.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "EVM wallet or contract address"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "chain": {
       "enum": [
        "eth"
       ],
       "type": "string",
       "description": "Which chain to query. Only 'eth' is supported right now."
      },
      "limit": {
       "type": "integer",
       "description": "Max transactions to return, default 25, max 100."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/internal-transaction-history-7ce57ebc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x402financialdata.com](https://www.zero.xyz/host/www.x402financialdata.com/llms.txt)