IBRARIES FOR BACKEND API
A software programme must connect to an Ethereum node in order to interact with the Ethereum blockchain (that is, to read blockchain data and/or transmit transactions to the network).
Every Ethereum client follows the JSON-RPC specification for this reason, ensuring that apps have access to a consistent set of endpoints.
There are various convenience libraries inside the Ethereum ecosystem that enable connecting with an Ethereum node with a given programming language considerably easier. Developers can use these libraries to create simple, one-line ways for initialising JSON-RPC queries that interact with Ethereum (under the hood).
PREREQUISITES
Understanding the Ethereum stack and Ethereum code may be beneficial.
WHY SHOULD YOU VISIT A LIBRARY?
Many of the complexities of working directly with an Ethereum node are abstracted away by these frameworks. They also provide utility functions (e.g., converting ETH to Gwei) so that as a developer, you may focus on the unique functionality of your application rather than the nuances of Ethereum clients.
LIBRARIES AVAILABLE
Alchemy is a development platform for Ethereum.
alchemy.com
Documentation
Ethereum Web APIs - GitHub Discord BlockCypher
blockcypher.com
Infura - The Ethereum API as a Service documentation
Cloudflare Ethereum Gateway infura.io Documentation GitHub
cloudflare-eth.com
Web3 API services with Ethereum Mainnet and testnets provided by DataHub by Figment.
Nodesmith - JSON-RPC API access to Ethereum Mainnet and testnets - DataHub Documentation
nodesmith.io
Ethercluster - Create your own Ethereum API service that accepts both ETH and ETC.
ethercluster.com
Shared Chainstack
