Avalanche RPC Endpoints

Dwellir provides Avalanche C-Chain RPC endpoints at https://api-avalanche-mainnet-archive.n.dwellir.com/<your-api-key>/ext/bc/C/rpc for mainnet (Chain ID 43114). The Fuji testnet uses Chain ID 43113. Replace <your-api-key> with the key from your Dwellir dashboard. Note the /ext/bc/C/rpc path suffix required for C-Chain access.

Dwellir's Avalanche endpoints currently provide HTTPS access only. WebSocket support is not available at this time. For real-time event monitoring, consider polling strategies or contact our team about dedicated node options with WebSocket capabilities.

Yes. Dwellir's Avalanche C-Chain endpoints run archive nodes, providing full historical state access. You can query balances, call contracts, and access transaction data at any past block height using methods like eth_call, eth_getBalance, and eth_getStorageAt. This is essential for analytics, auditing, and historical data queries.

1. Sign up at dwellir.com and retrieve your API key from the dashboard. 2. Replace your current C-Chain RPC URL (e.g., https://api.avax.network/ext/bc/C/rpc) with https://api-avalanche-mainnet-archive.n.dwellir.com/<your-api-key>/ext/bc/C/rpc. The API is fully compatible with standard Ethereum JSON-RPC methods on the C-Chain.

Avalanche C-Chain Mainnet uses Chain ID 43114 with AVAX as the native token and ~2 second block times. The Fuji testnet uses Chain ID 43113. Avalanche uses the Snowball consensus algorithm for sub-second finality. The C-Chain is fully EVM-compatible. Block explorers: snowtrace.io (mainnet) and testnet.snowtrace.io (Fuji).

Dwellir's Avalanche C-Chain endpoints are fully compatible with standard EVM tooling including Web3.js, ethers.js, viem, and Web3.py. Development frameworks like Hardhat, Foundry, and Truffle work seamlessly. Simply configure your provider with the Dwellir RPC URL (including the /ext/bc/C/rpc path) and your API key.

Avalanche has three built-in chains: C-Chain (Contract Chain) is EVM-compatible for smart contracts and DeFi—this is what Dwellir provides. X-Chain (Exchange Chain) uses the Avalanche VM for asset transfers and atomic swaps. P-Chain (Platform Chain) handles staking, validators, and subnet creation. Assets can move between chains via atomic transactions. Dwellir's RPC endpoints serve the C-Chain; for X-Chain or P-Chain operations, you'll need different API endpoints with /ext/bc/X or /ext/bc/P paths.

Cross-chain transfers on Avalanche use atomic transactions. To move AVAX from C-Chain to X-Chain: 1) Export from C-Chain using avax.export, 2) Import to X-Chain using avm.import. Use avax.getAtomicTxStatus to check transaction status. The Core wallet (core.app) provides a UI for cross-chain transfers. Note that C-Chain uses the /ext/bc/C/avax endpoint for atomic operations, not the standard /ext/bc/C/rpc EVM endpoint.