6 Add API Key and Base ID to Runkit environment settings
In your Runkit account, go to settings. (Again, you should be logged in)
Scroll down to the Environment Variables section.
Now add an environment variable called AIRTABLE_API_KEY and paste the value you copied in step 4. Then create another environment variable called PLANETS_BASE and paste the value you copied in step 5. Runkit automatically saves these values once you paste them in, so no need to explicitly save them.