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How to add Harmony network in MetaMask?

To use Harmony (ONE) with MetaMask, manually add the Harmony network using the correct RPC URL, Chain ID (e.g., 1666600000 for mainnet), currency symbol (ONE), and block explorer URL; double-check all parameters for accurate connection.

Mar 07, 2025 at 10:36 am

Key Points:

  • MetaMask doesn't directly support Harmony (ONE) by default. You need to add the Harmony network manually.
  • This involves adding the correct RPC URL, Chain ID, Currency Symbol, and Block Explorer URL to MetaMask's network settings.
  • Incorrect parameters will prevent you from interacting with the Harmony blockchain.
  • Double-check all parameters before saving to avoid issues.
  • Always use trusted sources for network information.

How to Add Harmony Network in MetaMask

MetaMask, a popular Ethereum-based wallet, doesn't inherently include the Harmony network. To use your MetaMask wallet with Harmony (ONE) tokens and dApps, you must manually add the Harmony mainnet or testnet to your MetaMask wallet. This process involves inputting specific network parameters into MetaMask's settings. Let's walk through adding the Harmony mainnet.

Adding Harmony Mainnet to MetaMask:

First, ensure you have the latest version of MetaMask installed in your browser. If not, update it from the official MetaMask website. Incorrect versions might have compatibility issues. Always verify the authenticity of the MetaMask extension to avoid phishing scams.

Next, open your MetaMask wallet and click on the network selector in the top right corner. This will typically show "Main Ethereum Network" or similar. You should see an option to "Add Network." Click on it.

Now, you'll need the Harmony Mainnet parameters. These are crucial for connecting to the correct Harmony blockchain. Using incorrect information will prevent your wallet from functioning correctly. Always source these details from official Harmony documentation or reputable community sources.

  • Network Name: Harmony Mainnet
  • New RPC URL: This is the address of the Harmony node you'll connect to. A common and reliable RPC URL is https://api.harmony.one. However, you may find others. Use the URL provided by an official Harmony source.
  • Chain ID: This is a unique identifier for the Harmony network. The correct Chain ID is 1666600000.
  • Currency Symbol: This is the ticker symbol for the Harmony token. Use ONE.
  • Block Explorer URL: This URL links to a website that displays blockchain information. A valid URL is https://explorer.harmony.one/.

Enter these parameters precisely into the corresponding fields in MetaMask's "Add Network" section. A single incorrect character can prevent successful connection. Double-check each field meticulously.

Once you have correctly filled in all the fields, click "Save." MetaMask will then add the Harmony Mainnet to your available networks. You should now be able to switch to the Harmony network in your MetaMask wallet and interact with Harmony-based applications and tokens.

Adding Harmony Testnet to MetaMask:

The process for adding the Harmony testnet (for testing purposes) is similar. You will, however, need a different set of parameters:

  • Network Name: Harmony Testnet
  • New RPC URL: https://api.s0.b.hmny.io (or another officially supported testnet RPC)
  • Chain ID: 1666700000
  • Currency Symbol: TONE
  • Block Explorer URL: https://explorer.testnet.harmony.one

Remember to replace any placeholder RPC URLs with ones officially provided by Harmony. Using unofficial URLs can lead to security risks and connectivity issues.

Troubleshooting:

If you encounter issues, first verify the accuracy of the parameters you entered. A small typo can prevent the network from being added correctly. If the problem persists, try restarting your browser or MetaMask extension.

If you are still unable to add the Harmony network, consult the official Harmony documentation or their community forums for assistance. They may have updated parameters or be able to help you troubleshoot the issue.

Frequently Asked Questions:

Q: What if I enter incorrect parameters when adding Harmony to MetaMask?

A: Entering incorrect parameters will prevent your MetaMask wallet from connecting to the Harmony network. You won't be able to send, receive, or interact with ONE tokens. Double-check your entries carefully against official Harmony documentation.

Q: Is it safe to add custom networks to MetaMask?

A: Adding custom networks carries inherent risks. Only add networks from trusted sources like official project websites or reputable community forums. Avoid adding networks from unknown or untrusted sources to prevent potential scams or security breaches.

Q: My Harmony tokens aren't showing up in MetaMask after adding the network. What should I do?

A: Ensure you've switched to the Harmony network in MetaMask. If you still don't see your tokens, you may need to import your private key or seed phrase into a new Harmony-compatible wallet if you were previously using another type of wallet.

Q: Can I use the same MetaMask account for both Ethereum and Harmony?

A: Yes, MetaMask allows you to switch between different networks, including Ethereum and Harmony, using the same account. Your private key remains consistent across all networks. However, remember that your tokens will be stored on the specific blockchain network you selected.

Q: Where can I find the most up-to-date RPC URLs and other network parameters for Harmony?

A: The official Harmony website and their developer documentation are the best sources for the most current and accurate network parameters. Always verify the information before using it to add a network to your MetaMask wallet.

Disclaimer:info@kdj.com

The information provided is not trading advice. kdj.com does not assume any responsibility for any investments made based on the information provided in this article. Cryptocurrencies are highly volatile and it is highly recommended that you invest with caution after thorough research!

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