Free Cronos RPC Endpoint
Chain ID 25 · CRO · multi-region with automatic failover
Cronos (Chain ID 25) is Crypto.com's EVM chain on Cosmos technology, with sub-second blocks and instant finality. NodeFlare serves Cronos RPC with the full EVM JSON-RPC surface.
Public endpoint — no API key
HTTPS
https://rpc.nodeflare.app/cronos/publicNeed higher limits? Use a keyed endpoint https://rpc.nodeflare.app/cronos/v1/{YOUR_KEY} — get a free key →
Connect to Cronos
curl -s -X POST https://rpc.nodeflare.app/cronos/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/cronos/public"
);
const block = await provider.getBlockNumber();import { createPublicClient, http } from "viem";
const client = createPublicClient({
transport: http("https://rpc.nodeflare.app/cronos/public"),
});
const block = await client.getBlockNumber();from web3 import Web3
w3 = Web3(Web3.HTTPProvider(
"https://rpc.nodeflare.app/cronos/public"
))
print(w3.eth.block_number)Add Cronos to your wallet
Network details for MetaMask, Rabby, or any EVM wallet — Cronos chain ID 25 (0x19).
| Network name | Cronos |
| RPC URL | https://rpc.nodeflare.app/cronos/public |
| Chain ID | 25 |
| Currency symbol | CRO |
| Block explorer | https://cronoscan.com |
Built for Cronos
Retail-facing DeFi and apps targeting the Crypto.com ecosystem. Every request routes to the nearest healthy node, with automatic failover and no per-request throttling — the gaps public endpoints leave.
Dedicated Cronos RPC node — your own path, not a shared pool
NodeFlare runs its own dedicated Cronos 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 Cronos RPC without running the node yourself.
Cronos RPC — FAQ
What is Cronos's chain ID?
Cronos's chain ID is 25 (hex 0x19). Its native currency is CRO and its block explorer is cronoscan.com. You can connect with NodeFlare's free public RPC at https://rpc.nodeflare.app/cronos/public — no API key required.
How do I add Cronos to MetaMask?
In MetaMask, open the network menu → "Add a network" → "Add a network manually", then enter — Network name: Cronos; New RPC URL: https://rpc.nodeflare.app/cronos/public; Chain ID: 25; Currency symbol: CRO; Block explorer URL: https://cronoscan.com. Save, then switch to Cronos. The endpoint is free and needs no account.
What is the Cronos RPC URL?
NodeFlare's public Cronos RPC URL is https://rpc.nodeflare.app/cronos/public over HTTPS. No API key is required for the public endpoint.
Is the Cronos RPC free?
Yes. The public Cronos 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 Cronos 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 Cronos RPC provider?
NodeFlare is an independent Cronos 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 Cronos RPC node?
Yes. NodeFlare runs its own dedicated Cronos 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 Cronos API reference → — supported methods, WebSocket, regions
- Rate limits & compute-unit costs → — what each method costs against your quota
- Pay per request with x402 → — Cronos calls in USDC from $0.001, no account:
POST /cronos/x402 - RPC for trading bots → and indexers → — low-latency, eth_getLogs-heavy workloads
- Screen a Cronos 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 Cronos with a free key
Higher limits, a dedicated path, and automatic failover — every chain included. No credit card.
Get your free API key →Cronos RPC methods
Per-method docs for Cronos — parameters, compute-unit cost, and copy-paste examples.