Polygon Mainnet RPC: Chain Settings, Basics & How to Add to MetaMask

Introduction

Adding Polygon Mainnet to MetaMask unlocks access to decentralized applications (dApps), DeFi protocols, and NFT marketplaces on the Polygon network. This guide covers two methods for integration—using Metaschool RPCs or manual configuration—with step-by-step instructions.

Method 1: Integrate Polygon Mainnet via Metaschool RPCs

Prerequisites

• Install MetaMask (browser extension or mobile app).
• Ensure you have an active wallet.

Steps

1. Select RPC URL: From Metaschool’s interface, pick the Polygon Mainnet RPC URL and click "Add to MetaMask".
2. Approve Connection: Confirm the pop-up request in MetaMask by clicking "Approve".
3. Switch Network: Click "Switch" to activate Polygon Mainnet.

👉 Need a reliable RPC? Try Polygon’s official endpoints

Method 2: Manual Configuration

Required Details

| Field | Value |
|---------------------|--------------------------------|
| Network Name | Polygon Mainnet |
| RPC URL | https://polygon-rpc.com/ |
| Chain ID | 137 |
| Currency Symbol | MATIC |

Steps

1. Open MetaMask → Click the profile icon → Settings → Networks.
2. Select Add Network → Add Manually.
3. Enter the above details and click Save.
4. Switch to the new network from the dropdown.

FAQs

1. Why add Polygon Mainnet to MetaMask?

Polygon offers low gas fees and fast transactions compared to Ethereum. Adding it enables seamless interactions with Polygon-based dApps.

2. Is Metaschool’s RPC secure?

Yes, but for critical transactions, use official RPCs or trusted providers like Infura.

3. What if my transaction fails after adding the network?

Verify the RPC URL and Chain ID, or switch to a different endpoint.

👉 Explore advanced network settings here

Key Takeaways

• Keywords: Polygon Mainnet, MetaMask RPC, MATIC, Chain ID 137, dApps, DeFi.
• Always double-check network details before saving.
• Bookmark official resources for troubleshooting.

For developer-focused guides, visit Polygon’s documentation.

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