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Agent402 Asset Transfers — EVM On-Chain Transfer History
x402
Agent402 Asset Transfers — EVM On-Chain Transfer History is a paid API for AI agents from agent402.tools, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Fetches paginated on-chain asset transfer history (ETH, ERC-20, ERC-721, ERC-1155) for an EVM wallet or contract address across major networks, powered by Alchemy.
Price / call$0.003
Success—
StatusUnknown
How this service works
Token and native transfer history for any EVM address across major chains: direction, counterparty, asset, exact decimal value, block and transaction hash, filterable by category and block range with a cursor for paging. Use it to reconstruct what an address actually did, rather than only what it holds now.
Output
Returns a paginated JSON object containing the transfer count, network details, a page cursor for continuation, and an array of transfer records — each with sender, recipient, transaction hash, block number, timestamp, asset name, token value, raw value, decimals, contract address, token ID, and category (e.g. erc20, erc721).
Example use cases
Audit incoming USDC payments to a wallet
“Fetch the last 25 inbound USDC transfers to 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum, filtering by the USDC contract 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48, ordered newest first.”
Track NFT transfers from a collector
“Get all ERC-721 transfers sent out from wallet 0xAbCd1234... on Polygon, starting from block 0, up to 50 results per page — I want to see what NFTs this address has been sending.”
Monitor DeFi activity on Base for a contract
“Pull the most recent 100 ERC-20 and ERC-1155 token transfers involving address 0x1234abcd... on Base, including both inbound and outbound, and show me the oldest ones first so I can trace activity from the beginning.”
Technical details
Endpoint
POSThttps://agent402.tools/api/asset-transfersWhen to prefer
Choose this endpoint when you need comprehensive, paginated on-chain transfer history for a specific EVM wallet or contract across major networks (Ethereum, Base, Polygon, Arbitrum, Optimism). It is ideal for auditing wallet activity, tracking token flows, building portfolio history, or monitoring NFT movements — especially when you need filtering by asset category, direction (in/out), counterparty, or specific token contracts. Prefer this over block explorers when you need structured JSON output ready for agent consumption without API keys.
Side effects
- Invalid or malformed EVM address returns a 400 error
- Unsupported network name returns an error — only ethereum/base/polygon/arbitrum/optimism are valid
- Inner dimensions mismatch if both address and contracts are omitted
- pageKey from a different query or expired cursor returns no results or an error
- maxCount outside 1–100 range is rejected
- Block numbers specified as invalid hex or decimal strings may cause a parse error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| order | string | desc (newest first, default) or asc. |
| address | string | 0x-prefixed 40-char EVM address (the wallet or contract whose transfers you want). Optional when `contracts` is set. |
| network | string | ethereum / base / polygon / arbitrum / optimism (default ethereum). |
| pageKey | string | Cursor from a previous response to fetch the next page. |
| toBlock | string | End block (decimal, 0x hex, or latest). Default latest. |
| category | array | Subset of external, internal, erc20, erc721, erc1155, specialnft. Default external+erc20+erc721+erc1155 (erc20+erc721+erc1155 when `contracts` is set). |
| maxCount | number | Rows per call, 1-100 (default 25). |
| contracts | array | Optional token contract filter, up to 10 addresses (token categories only). |
| direction | string | in (transfers TO address) or out (transfers FROM address). Default in. |
| fromBlock | string | Start block (decimal or 0x hex). Default 0 = genesis. |
| counterparty | string | Optional other party: with direction in, only transfers FROM this address; with out, only transfers TO it. |
| includeZeroValue | boolean | Include zero-value transfers (plain contract calls). Default false. |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 5,
"order": "desc",
"source": "alchemy",
"address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
"chainId": 1,
"network": "ethereum",
"pageKey": "1f449b0c-…",
"toBlock": "latest",
"maxCount": 5,
"contracts": [
"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"
],
"direction": "in",
"fetchedAt": "2026-08-22T12:00:00.000Z",
"fromBlock": "0x0",
"transfers": [
{
"to": "0xd8da…6045",
"from": "0xa916…6081",
"hash": "0x214b…e56b",
"asset": "USDC",
"value": "0.42",
"tokenId": null,
"blockNum": 25563191,
"category": "erc20",
"contract": "0xa0b8…eb48",
"decimals": 6,
"rawValue": "420000",
"timestamp": "2026-07-19T00:32:23.000Z"
}
],
"categories": [
"erc20"
],
"counterparty": null
}
}Tags
x402
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