Avalanche RPC Endpoint

Flat-rate Avalanche RPC provider and Avalanche RPC node access: free tier, no KYC, HTTP & WebSocket. Avalanche mainnet chain ID 43114.

Avalanche is a heterogeneous network of blockchains. The C-Chain is Avalanche's EVM-compatible smart contract chain, offering near-instant finality (~1-2 seconds) and high throughput via the novel Snowman/Avalanche consensus.

About Avalanche

Avalanche launched its mainnet in September 2020. The platform is built around three core chains: the P-Chain (platform), X-Chain (asset exchange), and C-Chain (contract / EVM). Most DeFi activity happens on the C-Chain.

A defining feature is Avalanche Subnets — application-specific chains validated by a customizable validator subset. Subnets allow projects to launch their own L1-class chains with custom rules. Notable subnets include DeFi Kingdoms, Dexalot, and several enterprise/gaming chains.

Common Use Cases on Avalanche

• DeFi with sub-2s finality (Trader Joe, Benqi, Pangolin)
• Subnet-based application chains
• Tokenized real-world assets and institutional pilots
• Gaming chains via Subnets
• Cross-chain bridging hub

Avalanche Ecosystem

Trader Joe (DEX), Benqi (lending), Pangolin, GMX (also on Arbitrum), DeFi Kingdoms (subnet). Avalanche has been an early venue for tokenized RWAs and several large institutional pilots.

Avalanche Mainnet RPC URL (HTTP)

Avalanche WebSocket RPC URL

Quick Start: Connect to Avalanche

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/avalanche?key=YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

ethers.js

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider(
  "https://rpc.swiftnodes.io/rpc/avalanche?key=YOUR_API_KEY"
);

const blockNumber = await provider.getBlockNumber();
console.log("Avalanche block:", blockNumber);

viem

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/avalanche?key=YOUR_API_KEY"),
});

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.swiftnodes.io/rpc/avalanche?key=YOUR_API_KEY"))
print("Avalanche block:", w3.eth.block_number)

Add Avalanche to MetaMask

Bridging to Avalanche

Official Avalanche Bridge (https://core.app/bridge) for ETH→AVAX C-Chain. LayerZero, Stargate, Squid for general cross-chain. Bridging is generally fast (~10 min deposits).

Features of SwiftNodes for Avalanche

• Load-balanced across multiple upstream nodes wherever a chain has more than one, with automatic failover
• Health-checked every 2 minutes with automatic failover
• Free tier available — no credit card or KYC required
• Flat-rate monthly pricing with no per-request fees
• HTTP and WebSocket support
• One API key works across all 75+ supported chains, including Avalanche

Rate Limits

Frequently Asked Questions: Avalanche

Avalanche RPC methods

Measured weekly through this endpoint: what each method returns on Avalanche, its limits, and an example request.

• eth_getLogssupported
• eth_getBlockReceiptssupported
• eth_feeHistorysupported
• eth_getProofsupported
• eth_createAccessListsupported
• debug_traceCallsupported
• trace_blocknot available
• trace_transactionnot available

Avalanche guides from the blog

• Avalanche RPC: C-Chain, Subnets, and EndpointsAvalanche isn't one chain — it's three (X, P, C) plus a growing set of L1 subnets, and that trips up everyone wiring up 'Avalanche RPC' for the first time. Here's which endpoint you actually need, why the URLs look weird, and how to connect.

Related EVM chains

Explore RPC endpoints for other EVM networks on SwiftNodes: