# Kava RPC Node  
Cosmos Meets Ethereum

Connect to Kava, the unique co-chain platform combining Cosmos SDK and EVM. Experience seamless interoperability, cross-chain DeFi, and the best of both ecosystems.

[Documentation](https://docs-rpc.crypto-chief.com/chains/kava) [Get a free endpoint ](https://auth.crypto-chief.com/registration)

##### 6 M+

Requests per Day

##### 99.9 %

Network Uptime

##### < 65 ms

Average Response Time

##### 24/7

Technical Support

## Specification Kava Network

Technical characteristics and available endpoints

![Kava (KAVA)](/img/protocols/kava.svg)

### Kava (KAVA)

EVM Co-Chain & Cosmos SDK Support

Chain ID (EVM) 2222

Protocol HTTPS / WSS

Uptime 99.9%

Block Time \~6s

Consensus Tendermint (Cosmos)

Architecture Cosmos + EVM Co-Chain

Kava is a unique Layer-1 blockchain featuring co-chain architecture combining Cosmos SDK and Ethereum EVM in a single network. This innovative design enables developers to build with either Cosmos or Ethereum tools while benefiting from seamless interoperability between both ecosystems. As a cross-chain DeFi platform, Kava connects Bitcoin, Ethereum, Cosmos, and other major chains through IBC and bridges.

#### Key capabilities:

- Co-chain architecture — Cosmos SDK + EVM simultaneously
- Seamless interoperability between Cosmos and Ethereum
- Full EVM compatibility for Solidity developers
- Cosmos SDK for native blockchain development
- IBC connectivity to Cosmos ecosystem
- Bridges to Bitcoin, Ethereum, and major chains
- Cross-chain DeFi protocols and lending
- Fast finality with Tendermint consensus
- Kava Lend, Kava Mint, and Kava Swap protocols

#### 🔗 RPC Endpoints

HTTPS

`https://rpc.crypto-chief.com/kava-evm/{YOUR_API_KEY}`

WSS

`wss://rpc.crypto-chief.com/kava-evm/ws/{YOUR_API_KEY}`

Replace {YOUR\_API\_KEY} with your actual API key from the dashboard.

## What is a Kava RPC Node?

Access dual-architecture DeFi platform

A Kava RPC node provides applications with access to a unique blockchain running both Cosmos SDK and EVM simultaneously in a co-chain architecture. This means developers can build with Cosmos tools (CosmWasm, IBC) or Ethereum tools (Solidity, ethers.js) on the same chain, with seamless communication between both environments.

### Why co-chain architecture matters

Most blockchains force a choice: Cosmos OR Ethereum. Kava offers both through **co-chain architecture** where Cosmos SDK and EVM run in parallel, sharing security and state. This enables Cosmos dApps to interact with Ethereum dApps natively, unlocking powerful cross-chain composability.

**Kava advantages:**

- **Co-chain** — Cosmos SDK + EVM simultaneously
- **Best of both** — choose Cosmos or Ethereum tools
- **IBC connectivity** — native Cosmos ecosystem access
- **Cross-chain DeFi** — bridges to BTC, ETH, major chains
- **Fast finality** — Tendermint consensus in \~6s
- **Proven DeFi** — Kava Lend, Mint, Swap protocols

### How co-chain works

Kava runs two execution environments on one blockchain: the **Cosmos Co-Chain** (Cosmos SDK, CosmWasm) and the **Ethereum Co-Chain** (EVM). Both share the same validators and security through Tendermint consensus. A translator module enables seamless communication between Cosmos and Ethereum smart contracts.

**Kava architecture:**

1. Single validator set secures both co-chains
2. Cosmos Co-Chain runs Cosmos SDK modules
3. Ethereum Co-Chain runs EVM smart contracts
4. Translator enables cross-co-chain communication
5. IBC connects to broader Cosmos ecosystem

### Cross-chain DeFi hub

Kava serves as a **cross-chain DeFi hub** connecting major blockchains through bridges and IBC. Users can supply BTC, ETH, ATOM, and other assets to Kava's DeFi protocols like Kava Lend (money market), Kava Mint (CDP stablecoin), and Kava Swap (DEX).

This cross-chain approach creates unified liquidity and enables strategies impossible on single-chain DeFi platforms.

## Technical Documentation

Quick start for developers

### Supported RPC Methods

Kava EVM Co-Chain supports all standard Ethereum JSON-RPC methods:

- **eth\_blockNumber** — current block number
- **eth\_getBalance** — KAVA balance
- **eth\_call** — execute view functions
- **eth\_sendRawTransaction** — broadcast transactions
- **eth\_getTransactionReceipt** — transaction confirmation
- **eth\_getLogs** — event logs
- **eth\_gasPrice** — current gas price
- **eth\_estimateGas** — gas estimation
- **eth\_subscribe** — WebSocket subscriptions

### Code Examples

💻

#### JavaScript (ethers.js) — Kava EVM Connection:

```
const { ethers } = require('ethers');

const provider = new ethers.JsonRpcProvider('https://rpc.crypto-chief.com/kava-evm/YOUR_API_KEY');

// Verify we're on Kava EVM Co-Chain
const network = await provider.getNetwork();
console.log('Chain ID:', network.chainId); // 2222

// Get KAVA balance
const balance = await provider.getBalance('0x...');
console.log('KAVA Balance:', ethers.formatEther(balance));

// Interact with Kava Lend
const KAVA_LEND = '0x...';
const lendABI = [
  'function supply(address asset, uint256 amount) external',
  'function getAccountLiquidity(address) view returns (uint256)'
];
const lend = new ethers.Contract(KAVA_LEND, lendABI, provider);

const liquidity = await lend.getAccountLiquidity('0x...');
console.log('Account liquidity:', ethers.formatEther(liquidity));
```

💻

#### Python (web3.py) — Kava Setup:

```
from web3 import Web3

w3 = Web3(Web3.HTTPProvider('https://rpc.crypto-chief.com/kava-evm/YOUR_API_KEY'))

print('Connected to Kava:', w3.is_connected())
print('Chain ID:', w3.eth.chain_id)  # 2222
print('Latest block:', w3.eth.block_number)

# Get KAVA balance
balance = w3.eth.get_balance('0x...')
print(f'KAVA: {balance / 1e18}')
```

💻

#### WebSocket — Monitor Kava DeFi:

```
const { ethers } = require('ethers');
const provider = new ethers.WebSocketProvider('wss://rpc.crypto-chief.com/kava-evm/ws/YOUR_API_KEY');

// Monitor new blocks
provider.on('block', async (blockNumber) => {
  const block = await provider.getBlock(blockNumber);
  console.log(`Kava block ${blockNumber}: ${block.transactions.length} txs`);
});

// Monitor cross-chain deposits
const BRIDGE = '0x...';
const filter = {
  address: BRIDGE,
  topics: [ethers.id('Deposit(address,uint256,bytes32)')]
};

provider.on(filter, (log) => {
  console.log('Cross-chain deposit on Kava:', log);
});
```

### Kava Best Practices

- **Co-Chain:** Choose Cosmos SDK or EVM based on needs
- **Cross-Chain:** Leverage bridges to BTC, ETH, Cosmos
- **IBC Integration:** Connect to Cosmos ecosystem via IBC
- **DeFi Protocols:** Integrate with Kava Lend, Mint, Swap
- **Gas Optimization:** Optimize for Tendermint finality
- **Testing:** Test on Kava testnet before mainnet

## Why choose us?

Co-chain DeFi infrastructure

### Dual Architecture

Infrastructure supporting unique co-chain architecture delivering &lt;65ms latency for both Cosmos and EVM.

### Cross-Chain Security

Enterprise infrastructure supporting multi-chain DeFi with 99.9% uptime and bridge monitoring.

### DeFi Analytics

Monitor cross-chain flows, lending activity, CDP positions, DEX volumes, and IBC transfers.

### Global Infrastructure

Strategically deployed nodes ensuring low latency for Kava's cross-chain DeFi ecosystem.

### Ecosystem Scaling

Infrastructure scales with growing cross-chain activity handling bridges, IBC, and DeFi protocols.

### Co-Chain Experts

24/7 support from engineers specialized in Cosmos, EVM, IBC, and cross-chain DeFi.

## Examples of Use

Build cross-chain DeFi

Kava's co-chain architecture and cross-chain bridges enable DeFi protocols connecting Bitcoin, Ethereum, Cosmos, and beyond.

#### Cross-Chain Lending

Build lending protocols accepting BTC, ETH, ATOM, and other cross-chain collateral through Kava's bridges and IBC.

#### Multi-Chain DEX

Create DEXs with liquidity from multiple chains. Trade assets from Ethereum, Cosmos, and beyond on single platform.

#### Stablecoin Protocols

Launch stablecoin systems using cross-chain collateral. Build on Kava Mint's proven CDP architecture.

#### Bridge Infrastructure

Develop bridge protocols leveraging Kava's co-chain to connect EVM and Cosmos ecosystems seamlessly.

#### Yield Aggregators

Build yield optimization protocols aggregating opportunities across Ethereum, Cosmos, and Kava DeFi.

#### Analytics Platforms

Create analytics tools for cross-chain DeFi tracking flows between Bitcoin, Ethereum, Cosmos on Kava.

## Got questions?  
we are here to help

## What is Kava? 

Kava is a Layer-1 blockchain with unique co-chain architecture running Cosmos SDK and EVM simultaneously for cross-chain DeFi.

## What is co-chain architecture? 

Co-chain means Kava runs both Cosmos SDK and Ethereum EVM in parallel on one blockchain, enabling developers to use either framework.

## Can Cosmos and Ethereum contracts interact? 

Yes! Kava's translator module enables seamless communication between Cosmos SDK modules and EVM smart contracts.

## Is Kava EVM compatible? 

Yes, the Kava Ethereum Co-Chain is fully EVM-compatible. Deploy Solidity contracts using standard Ethereum tools.

## What is IBC? 

IBC (Inter-Blockchain Communication) is Cosmos's protocol for cross-chain communication. Kava connects to the Cosmos ecosystem via IBC.

## What is the KAVA token? 

KAVA is the native token used for gas fees, staking, governance, and as collateral in Kava's DeFi protocols.

## What are Kava's DeFi protocols? 

Kava offers Kava Lend (money market), Kava Mint (CDP stablecoin), and Kava Swap (DEX) as core DeFi primitives.

## Which chains can I bridge to Kava? 

Kava has bridges to Bitcoin, Ethereum, BNB Chain, and IBC connectivity to the entire Cosmos ecosystem.

## Do you support Kava testnet? 

Yes, we provide RPC access to both Kava mainnet (Chain ID 2222) and testnet for development.

## How is Kava different from Cosmos Hub? 

Kava adds EVM co-chain and focuses on DeFi, while Cosmos Hub is purely Cosmos SDK focused on IBC hub functionality.

## Pricing that grows with your needs.

### Free

Start building on Web3 — no credit card.

##### $0

- 5 reqs/sec RPC
- 5 reqs/min Unified API
- 1 req/day AML
- Ultimate chains
- WSS, Statistics
- Community support

[Get started ](https://auth.crypto-chief.com/registration)

### Pay for use

Flexible pay-as-you-go for any workload.

##### From $10

- 400 reqs/sec RPC
- 300 reqs/min Unified API
- 5 reqs/sec AML
- EventStream
- Ultimate chains
- WSS, Whitelists, Statistics
- Support portal

[Get started](https://auth.crypto-chief.com/registration)

### Subscription

From $500 monthly plus 20% extra value.

##### From $500

- 400 reqs/sec RPC
- 300 reqs/min Unified API
- 5 reqs/sec AML
- EventStream
- Ultimate chains
- WSS, Whitelists, Statistics
- Support portal

[Get started ](https://auth.crypto-chief.com/registration)

### Enterprise

Tailored solution for expert builders

##### Custom terms

All Subscription features plus:

- Flexible rate limits
- Engineering team support
- Custom SLA
- Personal manager

[Contact Sales ](/contact/)