Skip to main content
For example, if a developer wants to build a DApp on Polygon, they would use these methods to get information about the network they are connecting to. They could use the chain ID information to make sure they are connecting to the right network and to ensure the security of their DApp; for example, distinguishing between the main network and a test network. Retrieving chain information from the Polygon blockchain can be done by using the following methods:

eth_chainId | Polygon

eth_syncing | Polygon

​
Get your own node endpoint today

Start for free and get your app to production levels immediately. No credit card required.You can sign up with your GitHub, X, Google, or Microsoft account.
Last modified on April 15, 2026