To get up and running quickly on the Kima testnet, it is probable that you will use a managed service such as Infura, Alchemy, Quicknode or Ankr, which are a practical solution because they abstract away the complexities of managing blockchain infrastructure.
These services provide RPC endpoints for different blockchains that you are able to access with API keys you create through the service.
Here is how to create API keys with each of the services.
Visit the Infura website and create an account. You will be prompted to create an API key.
When you select the networks you need to connect to, ensure that you check the boxes for the networks that Kima supports - see the list here.
For Alchemy, the process is slightly different. Sign up for an account here. Navigate to the dashboard and select Apps
in the left-hand navigation. You will be prompted to create an App. Select your network(s) and once you have saved your App, your API key will be revealed at the top right of the page.
Visit Quicknode and sign up for an account. You will then be prompted to create your first endpoint on a screen that looks like this:
To use the Ankr API, visit the Ankr website and in the Products menu in the top navigation bar, click on Web3 API. This will prompt you to set up an account and then you can navigate here and create an endpoint.