ABCore RPC Endpoint

Flat-rate ABCore RPC provider and ABCore RPC node access: free tier, no KYC, HTTP. ABCore mainnet chain ID 36888.

ABCore (AB Core) is the EVM-compatible Layer 1 main chain of the AB blockchain network, the project formerly known as Newton. It uses AB as its gas token and is designed to sit at the center of a set of industry-specific sidechains.

About ABCore

Newton rebranded as AB in February 2025, and AB Core and the AB bridge mainnets were live by Q2 2025. AB Core runs a fork of Geth with proof-of-authority consensus; AB's documentation recommends treating a transaction as secure after 20 block confirmations.

AB Core supports standard EVM contracts, but only up to the Berlin hard fork: there is no EIP-1559, so block headers lack baseFeePerGas and transactions should use legacy gas pricing. Because the consensus has no finality gadget, apps should rely on confirmation depth rather than the safe or finalized block tags.

Common Use Cases on ABCore

• Transferring and holding AB
• EVM smart contracts with legacy gas pricing
• Bridging assets via the AB bridge
• Anchoring AB industry sidechains

ABCore Mainnet RPC URL (HTTP)

ABCore WebSocket RPC URL

Not available for ABCore right now: none of its upstreams currently accepts a subscription in our health checks. Poll the HTTP endpoint above instead.

Quick Start: Connect to ABCore

cURL

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

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

viem

import { createPublicClient, http } from "viem";

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

const blockNumber = await client.getBlockNumber();

web3.py

from web3 import Web3

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

Add ABCore to MetaMask

Features of SwiftNodes for ABCore

• 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 support (WebSocket not available for this chain right now)
• One API key works across all 75+ supported chains, including ABCore

Rate Limits

Frequently Asked Questions: ABCore

Related EVM chains

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