Polygon RPC Endpoint

Fast, flat-rate Polygon RPC node provider — free tier, no KYC, HTTP & WebSocket.

Polygon PoS is a high-throughput EVM-compatible chain that scales Ethereum with sub-cent transaction fees and 2-second block times. With years of production use, deep stablecoin liquidity, and major brand adoption, Polygon remains one of the most widely-deployed scaling solutions.

About Polygon

Polygon (formerly Matic) launched its proof-of-stake chain in May 2020 and has since grown to be one of the most widely-used EVM chains by both developer and enterprise adoption. The chain uses a heavily-modified Bor (Geth fork) execution client validated by a Heimdall (Cosmos-SDK) consensus layer.

Polygon Labs has been expanding into a broader ecosystem with the AggLayer, Polygon zkEVM, and chain-development kits (CDK). Polygon PoS itself processes 3-5M transactions per day and hosts major brands and stablecoin issuers including Aave, Uniswap, USDC, USDT, Starbucks (loyalty), Adidas, and Reddit Collectible Avatars.

Common Use Cases on Polygon

• Stablecoin payments and remittance
• DeFi (Aave V3, Uniswap V3, Quickswap, Curve)
• Enterprise tokenization (Starbucks, Adidas, Reddit)
• Gaming and NFTs (high-volume, low-fee)
• Layer-2 deployment via Polygon CDK

Polygon Ecosystem

Aave V3 (top non-Ethereum deployment), Uniswap V3, QuickSwap, Curve, Balancer, OpenSea (NFTs). Polygon has deep stablecoin liquidity — USDC and USDT both have $1B+ supply on the chain.

HTTP Endpoint

WebSocket Endpoint

Quick Start: Connect to Polygon

cURL

curl -X POST https://rpc.swiftnodes.io/rpc/polygon?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/polygon?key=YOUR_API_KEY"
);

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

viem

import { createPublicClient, http } from "viem";

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

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

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

Add Polygon to MetaMask

Bridging to Polygon

Official Polygon PoS Bridge (https://portal.polygon.technology) for canonical bridging from Ethereum (~30 min deposits, 1-3 hour withdrawals via checkpoint). Stargate, Across, and Squid for fast cross-chain.

Features of SwiftNodes for Polygon

• Multiple load-balanced upstream nodes for high availability
• Health-checked every 60 seconds 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 Polygon

Rate Limits

Frequently Asked Questions: Polygon

Polygon guides from the blog

• Polygon vs Polygon zkEVM: Which RPC Endpoint Do You Actually Need?They share a name and a parent company, but Polygon PoS and Polygon zkEVM are two separate chains — different chain IDs, different gas tokens, different security models, and very different liquidity. Here's how to tell which RPC endpoint your app actually needs.

Related EVM chains

Explore RPC endpoints for other EVM networks on SwiftNodes: