> ## Documentation Index
> Fetch the complete documentation index at: https://docs.air3.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported chains

> Supported chains in AIR Kit — list of mainnet and testnet EVM networks available for smart account deployment based on your partner configuration.

# Supported Chains

AIR Kit supports multiple blockchain networks. The available chains depend on your partner configuration.

**Mainnet Chains:**

* **Base** (Chain ID: 8453) - Default mainnet chain
* **BSC** (Chain ID: 56)
* **Gnosis** (Chain ID: 100)
* **Kaia** (Chain ID: 8217)
* **Soneium** (Chain ID: 1868)

**Testnet Chains:**

* **Base Sepolia** (Chain ID: 84532) - Default testnet chain
* **BSC Testnet** (Chain ID: 97)
* **Gnosis Chiado** (Chain ID: 10200)
* **Kairos** (Chain ID: 1001)
* **Soneium Minato** (Chain ID: 1946)
* **Sepolia** (Chain ID: 11155111)

## Chain configuration

Chains are configured per partner through the partner configuration:

```tsx theme={null}
// Partner configuration example
{
  chainId: "8453", // Default chain (Base mainnet)
  enabledChainIds: ["8453", "56", "100"] // All supported chains of that partner
}
```

## Gas cost reference

Gas costs on AIR Kit operations are paid in the native token of the selected chain (or sponsored via Paymaster). The table below shows **approximate gas units** for common operations. Actual \$MOCA costs for Moca Chain credential anchoring are listed separately.

<Note>
  These benchmarks reflect Testnet measurements as of Q1 2025. Mainnet costs may differ. Enable [Gas Sponsorship (Paymaster)](/products/money/paymaster) to abstract all gas costs from your end users.
</Note>

### Credential operations (Moca Chain)

| Operation | Estimated Gas | Approx. Cost |
| - | :-: | :-: |
| Smart account deployment (first-time) | \~200,000 | \~0.0002 MOCA |
| Credential issuance (on-chain anchor) | \~80,000 | \~0.00008 MOCA |
| Credential verification (ZK proof submit) | \~120,000 | \~0.00012 MOCA |
| Credential revocation | \~50,000 | \~0.00005 MOCA |
| Session key registration | \~60,000 | \~0.00006 MOCA |

### EVM chain operations (Base, BSC, Gnosis, etc.)

| Operation | Estimated Gas | Notes |
| - | :-: | - |
| Smart account deployment | \~200,000 | One-time per user per chain |
| UserOperation (ERC-4337) | \~150,000–300,000 | Varies by calldata size |
| ERC-20 transfer | \~65,000 | Standard token transfer |

## Gas sponsorship

Use the [Paymaster](/products/money/paymaster) to cover all user-facing gas costs from a pre-funded developer wallet. This removes all on-chain funding friction from your end users — they never need to hold or manage gas tokens.

<Note>
  For Moca Chain RPC endpoints, chain IDs, and explorers, see [Network information](/technicals/mocachain/network-information).
</Note>


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