X Layer RPC Endpoint

Flat-rate X Layer RPC provider and X Layer RPC node access: free tier, no KYC, HTTP & WebSocket. X Layer mainnet chain ID 196.

X Layer is OKX's Ethereum layer 2, with OKB as its gas token. Originally built on Polygon CDK as a zkEVM, it migrated to the OP Stack in 2025 and connects to Polygon's AggLayer for cross-chain bridging.

About X Layer

X Layer's public mainnet launched in April 2024 on Polygon CDK. In 2025 OKX rebuilt it on the OP Stack, keeping AggLayer as its shared bridge with pessimistic proofs, and OKB became its sole gas token after supply was capped at 21 million. In June 2026 it activated an OP Succinct Lite dispute game that uses ZK proofs to resolve state challenges.

Since the migration X Layer offers EVM equivalence and OP Stack RPC behavior, so standard Ethereum tooling works. Fees are paid in OKB rather than ETH, which matters for wallets, gas estimation and relayers. The chain is closely tied to OKX exchange and OKX Wallet users.

Common Use Cases on X Layer

• Deposits and withdrawals from OKX
• DEX trading and DeFi
• Stablecoin payments
• OKX Wallet dapps

X Layer Mainnet RPC URL (HTTP)

X Layer WebSocket RPC URL

Quick Start: Connect to X Layer

cURL

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

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

viem

import { createPublicClient, http } from "viem";

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

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

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

Add X Layer to MetaMask

Features of SwiftNodes for X Layer

• 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 X Layer

Rate Limits

Frequently Asked Questions: X Layer

X Layer RPC methods

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

• eth_getLogssupported
• eth_getBlockReceiptssupported
• eth_feeHistorysupported
• eth_getProofsupported
• eth_createAccessListsupported
• debug_traceCallsupported
• trace_blocksupported
• trace_transactionsupported

Related L2 & rollup chains

Explore RPC endpoints for other L2 & rollup networks on SwiftNodes: