Free Ink RPC Endpoint
Chain ID 57073 · ETH · multi-region with automatic failover
Ink (Chain ID 57073) is Kraken's OP-Stack L2 with 1-second blocks, built for DeFi. NodeFlare runs a dedicated Ink node — one of a small set of independent providers.
Public endpoint — no API key
HTTPS
https://rpc.nodeflare.app/ink/publicNeed higher limits? Use a keyed endpoint https://rpc.nodeflare.app/ink/v1/{YOUR_KEY} — get a free key →
Connect to Ink
curl -s -X POST https://rpc.nodeflare.app/ink/public \
-H 'content-type: application/json' \
-d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'import { ethers } from "ethers";
const provider = new ethers.JsonRpcProvider(
"https://rpc.nodeflare.app/ink/public"
);
const block = await provider.getBlockNumber();import { createPublicClient, http } from "viem";
const client = createPublicClient({
transport: http("https://rpc.nodeflare.app/ink/public"),
});
const block = await client.getBlockNumber();from web3 import Web3
w3 = Web3(Web3.HTTPProvider(
"https://rpc.nodeflare.app/ink/public"
))
print(w3.eth.block_number)Add Ink to your wallet
Network details for MetaMask, Rabby, or any EVM wallet — Ink chain ID 57073 (0xdef1).
| Network name | Ink |
| RPC URL | https://rpc.nodeflare.app/ink/public |
| Chain ID | 57073 |
| Currency symbol | ETH |
| Block explorer | https://explorer.inkonchain.com |
Built for Ink
DeFi and exchange-adjacent apps building early on Ink. Every request routes to the nearest healthy node, with automatic failover and no per-request throttling — the gaps public endpoints leave.
Dedicated Ink RPC node — your own path, not a shared pool
NodeFlare runs its own dedicated Ink node on bare-metal — not a reseller of Alchemy or Infura, and not a shared free-for-all pool. A free or paid key gives you a dedicated endpoint path with your own rate limits, no per-request throttling, and full access to heavy methods (eth_getLogs, trace_*, debug_*) — your own Ink RPC without running the node yourself.
Ink RPC — FAQ
What is Ink's chain ID?
Ink's chain ID is 57073 (hex 0xdef1). Its native currency is ETH and its block explorer is explorer.inkonchain.com. You can connect with NodeFlare's free public RPC at https://rpc.nodeflare.app/ink/public — no API key required.
How do I add Ink to MetaMask?
In MetaMask, open the network menu → "Add a network" → "Add a network manually", then enter — Network name: Ink; New RPC URL: https://rpc.nodeflare.app/ink/public; Chain ID: 57073; Currency symbol: ETH; Block explorer URL: https://explorer.inkonchain.com. Save, then switch to Ink. The endpoint is free and needs no account.
What is the Ink RPC URL?
NodeFlare's public Ink RPC URL is https://rpc.nodeflare.app/ink/public over HTTPS. No API key is required for the public endpoint.
Is the Ink RPC free?
Yes. The public Ink endpoint is free with no sign-up. A free API key unlocks higher rate limits, heavy methods, and a dedicated path — 2,000,000 compute units per month, no credit card.
What are the Ink RPC rate limits?
The public endpoint is limited to 2 requests/second per IP. A free key gives 10 requests/second; paid plans scale to 500 req/s. Every plan includes all 22 supported chains.
Is NodeFlare a good Ink RPC provider?
NodeFlare is an independent Ink RPC provider that runs its own nodes — not a reseller or aggregator of third-party backends. The public endpoint is free with no sign-up; a free API key adds higher rate limits, and heavy methods (eth_getLogs, trace_*, debug_*) — 2,000,000 compute units per month, no credit card.
Is there a dedicated Ink RPC node?
Yes. NodeFlare runs its own dedicated Ink node(s), and every request is routed to the nearest healthy node with automatic failover. A free or paid key gives you a dedicated endpoint path with your own rate limits and full access to archive methods like eth_getLogs and debug_traceTransaction.
Go deeper
- Full Ink API reference → — supported methods, WebSocket, regions
- Rate limits & compute-unit costs → — what each method costs against your quota
- Pay per request with x402 → — Ink calls in USDC from $0.001, no account:
POST /ink/x402 - RPC for trading bots → and indexers → — low-latency, eth_getLogs-heavy workloads
- Screen a Ink token for scams → — ownership, honeypot check, holder concentration → one risk score
- Onchain tools for AI agents → — token-safety, wallet intelligence and RPC over MCP / x402
Build on Ink with a free key
Higher limits, a dedicated path, and automatic failover — every chain included. No credit card.
Get your free API key →Ink RPC methods
Per-method docs for Ink — parameters, compute-unit cost, and copy-paste examples.