Login into to MetaCall FaaS:
Along with this Mailchimp Example repository and the branch, you simply add the environment variables corresponding to your mailchimp account configuration:
MAILCHIMP_API_USERNAME=authusername
MAILCHIMP_API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-xxxx
MAILCHIMP_TARGET_LIST=xxxxxxxxxx
After deployment you should see something like this.
Now you can start using your new async function as an endpoint using the await route
curl -X POST https://api.metacall.io/<your_alias>/mailchimp-example/v1/await/subscribe -X POST --data '{ "email": "your_email@domain.com" }'
If you go into mailchimp.js you can see we've instanciated an express server with an endpoint called '/webhook'. This is useful to configure a after-subscription webhook (or any of the like) and perform actions in it.
To do so, you take the url with the port route https://api.metacall.io/<your_alias>/mailchimp-example/v1/port/8080/webhook and place it in Mailchimp's webhook url box.
That's it, Enjoy MetaCall!