Webhooks

Creating a section on webhooks in the context of APIs.

1. Subscriptions - just like graphql subscriptions, when an update is made it can alert others. This could be in response to an action you just took (callbacks) or to something done by somebody else hours days weeks later.
2. Subscribing to webhooks in your API.
3. How to keep things secure

Other ideas

"There's no good reason for signing webhooks" - https://www.speakeasy.com/post/no-good-reason-for-signing-webhooks

https://www.speakeasyapi.dev/post/openapi-tips-webhooks-callbacks