---
title: "Send ETH or fungible tokens (ERC-20) from account to account"
method: POST
path: "/v3/ethereum/transaction"
tags: ["Ethereum - Tatum API"]
---

# Send ETH or fungible tokens (ERC-20) from account to account

`POST /v3/ethereum/transaction`

## Request

- Base URL: `https://api.tatum.io`
- URL: `https://api.tatum.io/v3/ethereum/transaction`
- Auth: API key in header `x-api-key`

/v3/ethereum/transaction

**2 credits per API call**

Send ETH or Tatum-supported fungible tokens (ERC-20) from account to account.

**NOTE:** Sending the fungible tokens is supported only on the mainnet.

**Signing a transaction**  
When sending ETH, you are charged a fee for the transaction, and you must sign the transaction with the private key of the blockchain address from which the fee will be deducted.

Providing the private key in the API is not a secure way of signing transactions, because the private key can be stolen or exposed. Your private keys should never leave your security perimeter. You should use the private keys only for testing a solution you are building on the **testnet** of a blockchain.

For signing transactions on the **mainnet**, we strongly recommend that you use the Tatum [Key Management System (KMS)](https://github.com/tatumio/tatum-kms) and provide the signature ID instead of the private key in the API. Alternatively, you can use the [Tatum JavaScript client](https://github.com/tatumio/tatum-js/tree/v2).

## Query parameters

- `testnetType` 'ethereum-sepolia'

## Headers

- `x-testnet-type` 'ethereum-sepolia'

## Request body

- union
  - TransferEthBlockchain
    - `to` string, required: The blockchain address of the recipient
    - `amount` string, required: The amount to be sent
    - `currency` 'BAT' | 'BUSD' | 'COIIN' | 'ETH' | 'FREE' | 'GMC' | 'LATOKEN' | 'LEO' | 'LINK' | 'MATIC_ETH' | 'POL_ETH' | 'MKR' | 'MMY' | 'PAX' | 'PAXG' | 'PLTC' | 'REVV' | 'SAND' | 'TUSD' | 'UNI' | 'USDC' | 'USDT' | 'WBTC' | 'XCON', required
    - `fromPrivateKey` string, required: The private key of the blockchain address of the sender; the fee will be deducted from this address
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
    - `data` string: Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format
    - `nonce` number: The nonce to be set to the transaction; if not present, the last known nonce will be used
  - TransferEthBlockchainKMS
    - `to` string, required: The blockchain address of the recipient
    - `amount` string, required: The amount to be sent
    - `currency` 'BAT' | 'BUSD' | 'COIIN' | 'ETH' | 'FREE' | 'GMC' | 'LATOKEN' | 'LEO' | 'LINK' | 'MATIC_ETH' | 'POL_ETH' | 'MKR' | 'MMY' | 'PAX' | 'PAXG' | 'PLTC' | 'REVV' | 'SAND' | 'TUSD' | 'UNI' | 'USDC' | 'USDT' | 'WBTC' | 'XCON', required
    - `signatureId` string, uuid, required: The KMS identifier of the private key of the sender's blockchain address; the fee will be deducted from this address
    - `index` number: (Only if the signature ID is mnemonic-based) The index of the address from which the fee will be deducted that was generated from the mnemonic
    - `fee` CustomFee: The custom defined fee; if not present, will be calculated automatically
      - `gasPrice` string, required: The price for one gas unit (in Gwei)
      - `gasLimit` string, required: The maximum number of gas units that you are willing to spend on processing the transaction at the provided gas price
    - `data` string: Additional data that can be passed to a blockchain transaction as a data property; must be in the hexadecimal format
    - `nonce` number: The nonce to be set to the transaction; if not present, the last known nonce will be used

## Response `200`

OK

- union
  - TransactionHash
    - `txId` string, required: The hash (ID) of the transaction
  - SignatureId
    - `signatureId` string, uuid, required: The internal Tatum ID of the prepared transaction for Key Management Sysytem (KMS) to sign<br/>This is different from the <code>signatureId</code> parameter that you provided in the request body. The <code>signatureId</code> parameter in the request body specifies the signature ID associated with the private key in KMS.

## Other responses

- `400`: Bad Request
- `401`: Unauthorized. Not valid or inactive subscription key present in the HTTP Header.
- `403`: Forbidden. The request is authenticated, but it is not possible to required perform operation due to logical error or invalid permissions.
- `500`: Internal server error. There was an error on the server during the processing of the request.

---

[API](https://skmtc.dev/tatum/apis/blockchain.md) - [All operations](https://skmtc.dev/tatum/apis/blockchain/llms.txt) - [OpenAPI document](https://skmtc.dev/tatum/apis/blockchain/revisions/f9623a85f420?raw)