> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zet.money/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported Assets

> Chains, tokens, and currencies supported by the Zet API

# Supported Assets

## Chains

### Primary chains

Full wallet support — create wallets, swap, ramp, and transfer from these chains.

| Chain    | Chain ID | Native Currency | Explorer                             |
| -------- | -------- | --------------- | ------------------------------------ |
| **Base** | `8453`   | ETH             | [basescan.org](https://basescan.org) |
| **BSC**  | `56`     | BNB             | [bscscan.com](https://bscscan.com)   |

### Destination chains

Supported as targets for cross-chain transfers from Base or BSC.

| Chain         | Chain ID           | Native Currency | Explorer                                   |
| ------------- | ------------------ | --------------- | ------------------------------------------ |
| **Ethereum**  | `1`                | ETH             | [etherscan.io](https://etherscan.io)       |
| **Polygon**   | `137`              | MATIC           | [polygonscan.com](https://polygonscan.com) |
| **Arbitrum**  | `42161`            | ETH             | [arbiscan.io](https://arbiscan.io)         |
| **Avalanche** | `43114`            | AVAX            | [snowscan.xyz](https://snowscan.xyz)       |
| **Solana**    | `1151111081099710` | SOL             | [solscan.io](https://solscan.io)           |

## Tokens

### Base (Chain ID: 8453)

| Token                | Symbol | Contract Address                             | Decimals |
| -------------------- | ------ | -------------------------------------------- | -------- |
| Ethereum             | ETH    | Native (0x0000...0000)                       | 18       |
| USD Coin             | USDC   | `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` | 6        |
| cNGN                 | CNGN   | `0x46C85152bFe9f96829aA94755D9f915F9B10EF5F` | 6        |
| Coinbase Wrapped BTC | cbBTC  | `0xcbB7C0000aB88B473b1f5aFd9ef808440eed33Bf` | 8        |

### BSC (Chain ID: 56)

| Token      | Symbol | Contract Address                             | Decimals |
| ---------- | ------ | -------------------------------------------- | -------- |
| BNB        | BNB    | Native (0x0000...0000)                       | 18       |
| USD Coin   | USDC   | `0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d` | 18       |
| Tether USD | USDT   | `0x55d398326f99059fF775485246999027B3197955` | 18       |
| cNGN       | CNGN   | `0xa8AEA66B361a8d53e8865c62D142167Af28Af058` | 6        |

## Fiat currencies

| Currency       | Code | Supported Operations |
| -------------- | ---- | -------------------- |
| Nigerian Naira | NGN  | On-ramp, Off-ramp    |

<Info>
  Additional fiat currencies and tokens will be added over time. Check back here or use the `/swap/tokens` and `/transfer/chains` endpoints for the latest supported assets.
</Info>

## Token availability by operation

| Token | On-Ramp | Off-Ramp | Swap (Base) | Swap (BSC) |
| ----- | ------- | -------- | ----------- | ---------- |
| CNGN  | ✅       | ✅        | ✅           | ✅          |
| USDC  | ✅       | ✅        | ✅           | ✅          |
| ETH   | ✅       | ✅        | ✅           | —          |
| cbBTC | ✅       | ✅        | ✅           | —          |
| BNB   | ✅       | ✅        | —           | ✅          |
| USDT  | ✅       | ✅        | —           | ✅          |

## CNGN

**CNGN** (cNGN) is a Nigerian Naira-backed stablecoin pegged 1:1 to NGN. It serves as the intermediary for all fiat on/off ramp operations:

* **On-ramp**: NGN → CNGN → Target Token (if not CNGN)
* **Off-ramp**: Source Token → CNGN (if not CNGN) → NGN

This means:

* Buying CNGN directly is the cheapest on-ramp (no swap fee)
* Selling CNGN directly is the cheapest off-ramp (no swap fee)
* Other tokens incur an additional 20 NGN swap fee for the CNGN conversion step
* Platform fee of 50 NGN is always charged on ramp transactions