@polkadot/api

This library provides a clean wrapper around all the methods exposed by a Polkadot/Substrate network client and defines all the types exposed by a node. For complete documentation around the classes, interfaces and their use, visit the documentation portal.

If you are an existing user, please be sure to track the CHANGELOG and UPGRADING guides when changing versions.

tutorials

Looking for tutorials to get started? Look at examples for guides on how to use the API to make queries and submit transactions.