# Understanding the Simulator Profiles

The Simulator provides different profiles. These profiles are predefined sets of responses for various API actions.
For now, we recommend that you use `profiles.STANDARD` which includes a set of mock accounts, mock currencies, and method handlers.

## Mock Accounts and Currencies

The Simulator is set up with a predefined list of mock accounts and currencies. Here’s a brief overview of the mock accounts and currencies used within the simulator:

## Mock Accounts

```json
[
  {
    "id": "account-btc-1",
    "name": "Bitcoin 1",
    "address": "address",
    "currency": "bitcoin",
    "balance": "42",
    "spendableBalance": "42",
    "blockHeight": 1,
    "lastSyncDate": "1995-12-17T03:24:00"
  },
  {
    "id": "account-eth-1",
    "name": "Ethereum 1",
    "address": "address",
    "currency": "ethereum",
    "balance": "42",
    "spendableBalance": "42",
    "blockHeight": 1,
    "lastSyncDate": "1995-12-17T03:24:00"
  }
]
```

## Mock Currencies

```json
[
  {
    "type": "CryptoCurrency",
    "id": "bitcoin",
    "ticker": "BTC",
    "name": "Bitcoin",
    "family": "bitcoin",
    "color": "#ffae35",
    "decimals": 8
  },
  {
    "type": "CryptoCurrency",
    "id": "ethereum",
    "ticker": "ETH",
    "name": "Ethereum",
    "family": "ethereum",
    "color": "#0ebdcd",
    "decimals": 18
  }
]
```

These mock accounts and currencies are used to emulate a realistic  environment. You can interact with these accounts and currencies through the API without affecting any real-world assets.