> For the complete documentation index, see [llms.txt](/llms.txt).

# Base

Base is an optimistic layer 2 rollup chain built by Coinbase on the MIT-licensed [OP Stack](https://docs.optimism.io/stack/getting-started#the-op-stack-today), in collaboration with [Optimism](/services/reference/optimism/).

The Base network provides seamless Coinbase integrations, easy fiat on-ramps, and access to more than 100 million users and $100 billion in assets in the Coinbase ecosystem.

See also

- The [official Base documentation](https://docs.base.org/) for more information.
- The official [Optimism Ethereum JSON-RPC API documentation](https://docs.optimism.io/node-operators/reference/op-node-json-rpc)(Bedrock release) for custom Base methods.

Select an option below to get started with the Base network.

- [QuickstartLearn how to quickly connect and make calls to the Base network.](/services/reference/base/quickstart/)
- [JSON-RPC APIsView the APIs available for communicating with the Base network.](/services/reference/base/json-rpc-methods/)
- [Create an API keyLearn how to create and secure an API key.](/developer-tools/dashboard/get-started/create-api/)