Cosmos logo

Cosmos Testnet

RPC Endpoints

Chain ID: theta-testnet-001 · ATOM

Other Cosmos networks:Mainnet
How to add Cosmos to MetaMask or other wallets

Cosmos Testnet uses ATOM as its native currency. Chain ID: NaN (theta-testnet-001). Below is a public RPC endpoint you can use to connect wallets, dApps, and developer tools to Cosmos Testnet.

StatusRPC EndpointChain IDCurrencyExplorerWallet
Checking
https://cosmos-testnet.gateway.tatum.io
theta-testnet-001ATOMExplorer

Connect to Cosmos Testnet with ethers.js

import { ethers } from "ethers";

const provider = new ethers.JsonRpcProvider("https://cosmos-testnet.gateway.tatum.io");

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

Cosmos Testnet — common questions

What is the RPC URL for Cosmos Testnet?
The public RPC URL for Cosmos Testnet is https://cosmos-testnet.gateway.tatum.io.
What is the Chain ID for Cosmos Testnet?
The Chain ID for Cosmos Testnet is NaN (theta-testnet-001 in hexadecimal).
What is the native currency of Cosmos Testnet?
The native currency of Cosmos Testnet is ATOM.
How do I add Cosmos Testnet to MetaMask?
Use the "Add to Wallet" button on this page to add Cosmos Testnet to MetaMask automatically, or follow our step-by-step guide for Cosmos.