# Account
### eth\_accounts
Returns a list of addresses owned by client.
**Parameters**
None
**Return Value**
| Type | Description |
| --------------------- | ------------------------------ |
| Array of 20-byte DATA | Addresses owned by the client. |
**Example**
```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_accounts","params":[],"id":1}' http://localhost:8551
// Result
{
"jsonrpc": "2.0",
"id":1,
"result": ["0xc94770007dda54cF92009BFF0dE90c06F603a09f"]
}
```
### eth\_getBalance
Returns the balance of the account of given address.
**Parameters**
| Name | Type | Description |
| -------------------- | ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| address | 20-byte DATA | Address to check for balance. |
| block number or hash | QUANTITY \| TAG \| HASH | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](/content/dapp/json-rpc/api-references/eth/block.md#the-default-block-parameter), or block hash. |
**Return Value**
| Type | Description |
| -------- | -------------------------------------- |
| QUANTITY | Integer of the current balance in peb. |
**Example**
```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getBalance","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f", "latest"],"id":1}' http://localhost:8551
// Result
{
"jsonrpc": "2.0","id":1,
"result": "0x0234c8a3397aab58" // 158972490234375000
}
```
### eth\_getCode
Returns code at a given address.
**Parameters**
| Type | Description |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| 20-byte DATA | Address |
| QUANTITY \| TAG \| HASH | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](/content/dapp/json-rpc/api-references/eth/block.md#the-default-block-parameter), or block hash. |
**Return Value**
| Type | Description |
| ---- | -------------------------------- |
| DATA | The code from the given address. |
**Example**
```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getCode","params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x2"],"id":1}' http://localhost:8551
// Result
{
"jsonrpc": "2.0",
"id":1,
"result": "0x600160008035811a818181146012578301005b601b6001356025565b8060005260206000f25b600060078202905091905056"
}
```
### eth\_getTransactionCount
Returns the number of transactions *sent* from an address.
**Parameters**
| Type | Description |
| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| 20-byte DATA | Address |
| QUANTITY \| TAG \| HASH | Integer or hexadecimal block number, or the string `"earliest"`, `"latest"` or `"pending"` as in the [default block parameter](/content/dapp/json-rpc/api-references/eth/block.md#the-default-block-parameter), or block hash. |
**Return Value**
| Type | Description |
| -------- | ------------------------------------------------------------- |
| QUANTITY | Integer of the number of transactions send from this address. |
**Example**
```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_getTransactionCount","params":["0xc94770007dda54cF92009BFF0dE90c06F603a09f","latest"],"id":1}' http://localhost:8551
// Result
{
"jsonrpc": "2.0",
"id":1,
"result": "0x1" // 1
}
```
### eth\_sign
The sign method calculates a Klaytn-specific signature with:
```
sign(keccak256("\x19Klaytn Signed Message:\n" + len(message) + message)))
```
Adding a prefix to the message makes the calculated signature recognizable as a Klaytn-specific signature. This prevents misuse where a malicious dApp signs arbitrary data (e.g. transaction) and uses the signature for impersonation.
**NOTE**: The address to sign with must be unlocked.
**Parameters**
| Name | Type | Description |
| ------- | ------------ | --------------- |
| account | 20-byte DATA | Address |
| message | N-byte DATA | Message to sign |
**Return Value**
| Type | Description |
| ---- | ----------- |
| DATA | Signature |
**Example**
```shell
// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_sign","params":["0x9b2055d370f73ec7d8a03e965129118dc8f5bf83", "0xdeadbeaf"],"id":1}' http://localhost:8551
// Result
{
"jsonrpc": "2.0",
"id":1,
"result": "0xa3f20717a250c2b0b729b7e5becbff67fdaef7e0699da4de7ca5895b02a170a12d887fd3b17bfdce3481f10bea41f45ba9f709d39ce8325427b57afcfc994cee1b"
}
```
---
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