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Flare Coston Testnet

RPC Endpoints

Chain ID: 16 · CFLR

Other Flare networks:MainnetCoston2 TestnetSongbird Mainnet
How to add Flare to MetaMask or other wallets

Flare Coston Testnet uses CFLR as its native currency. Chain ID: 22 (16). Below are 2 public RPC endpoints you can use to connect wallets, dApps, and developer tools to Flare Coston Testnet.

StatusRPC EndpointChain IDCurrencyExplorerWallet
Checking
https://coston-api.flare.network/ext/C/rpc
16CFLRExplorer
Checking
https://flare-coston.gateway.tatum.io
16CFLRExplorer

Connect to Flare Coston Testnet with ethers.js

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider("https://coston-api.flare.network/ext/C/rpc");

const network = await provider.getNetwork();
console.log(network.chainId); // 22n

Flare Coston Testnet — common questions

What is the RPC URL for Flare Coston Testnet?
There are 2 public RPC endpoints for Flare Coston Testnet, including https://coston-api.flare.network/ext/C/rpc. See the full list in the table above.
What is the Chain ID for Flare Coston Testnet?
The Chain ID for Flare Coston Testnet is 22 (16 in hexadecimal).
What is the native currency of Flare Coston Testnet?
The native currency of Flare Coston Testnet is CFLR.
How do I add Flare Coston Testnet to MetaMask?
Use the "Add to Wallet" button on this page to add Flare Coston Testnet to MetaMask automatically, or follow our step-by-step guide for Flare.