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OneSource ERC-20 Transfer History
x402
OneSource ERC-20 Transfer History is a paid API for AI agents from api.onesource.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Retrieves ERC-20 token transfer events for a specific token contract and/or wallet address on Ethereum mainnet or Sepolia testnet over a specified block range
Price / call$0.005
Success—
StatusUnknown
How this service works
ERC20 Transfer logs via eth_getLogs - raw Transfer events for a token or wallet
Output
Returns a JSON object with a count of matching transfers and an array of transfer records, each containing the sender address (from), recipient address (to), token contract address, transferred value (as a string integer in the token's smallest unit), the transaction hash, and the block number where the transfer occurred.
Example use cases
Example prompt
“Can you pull all the ERC-20 transfers for USDT (0xdac17f958d2ee523a2206206994597c13d831ec7) involving wallet 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 on Ethereum mainnet from block 20000000 to the latest block?”
Technical details
Endpoint
GEThttps://api.onesource.io/api/chain/erc20-transfersWhen to prefer
Use this endpoint when you need structured ERC-20 transfer event data for a specific token and/or wallet over a defined block range without running your own Ethereum node or managing API keys. Ideal for agents auditing wallet activity, tracking DeFi token flows, or monitoring token distribution — especially when paying per call via x402 with USDC on Base or pathUSD on Tempo is acceptable. Prefer this over raw eth_getLogs calls when you want pre-parsed, typed transfer records rather than raw log data.
Side effects
- Invalid Ethereum address format returns a validation error
- Block range too large may result in timeout or truncated results
- Token contract address that is not ERC-20 returns empty transfer list
- Unsupported network value returns 400 error
- Payment failure (insufficient USDC balance) results in 402 response blocking the request
- from_block greater than to_block returns empty or error response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"logs": [
{
"data": "0x00000000000000000000000000000000000000000000000000000000000f4240",
"topics": [
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x000000000000000000000000d8da6bf26964af9d7eed9e03e53415d37aa96045",
"0x0000000000000000000000006b175474e89094c44da98b954eedeac495271d0f"
],
"address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
"logIndex": "0x0",
"blockNumber": "0x133da1e",
"transactionHash": "0xad7e04119ecd85857728205f5b12e95f0bab8e99f9c2f60be5dc79cfc6a8df1f"
}
],
"count": 1,
"to_block": "latest",
"from_block": "latest"
},
"meta": {
"endpoint": "/api/chain/erc20-transfers",
"cost_usdc": "0.001",
"request_id": "00000000abcdef01",
"payment_chain": "base",
"payment_token": "USDC"
}
}
}Tags
x402
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