# How to Use the Polygon Network on Metamask on Chrome Extension {% embed url="" %} 1. First, make sure you have the latest version of the Metamask extension installed on your browser. 2. Open Metamask and click on the Ethereum Mainnet button (top-middle bar) between the fox icon and the circled account icon. 3. From the dropdown, select the "Add network" tab at the bottom. 4. In the Settings page, click on the "Add" next to "Polygon Mainnet" under "Popular custom networks." 5. On the pop-up menu, click "Approve" button add the Polygon Network to your Metamask. Then skip to Step 9 below. 6. If you do not see "Polygon" listed there, click on "Add a network manually" at the bottom. 7. In the "Add a network manually" dialog box, enter the following information: * Network Name: Polygon * New RPC URL: * Chain ID: 137 * Symbol: POLY * Block Explorer URL: 8. Click on the "Save" button to add the Polygon Network to your Metamask. 9. You should now see the Polygon Network listed in the "Networks" tab. To switch to the Polygon Network, click on it and then click on the "Save and Close" button. 10. You can now use Metamask to interact with the Polygon Network, such as sending and receiving transactions or interacting with untrading App. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.untrading.org/tutorials/web3/how-to-use-the-polygon-network-on-metamask-on-chrome-extension.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.