Actions are a way to extend Hasura’s schema with custom business logic using custom queries and mutations. Actions can be added to Hasura to handle various use cases such as data validation, data enrichment from external sources and any other complex business logic.

How it works

• Hasura receives the action GraphQL query or mutation and converts this request into an event payload.
• The event is captured, persisted and then delivered to the action handler with the appropriate retry/delivery guarantees.
• The action handler runs and returns a response that is captured as an event and again persisted to the event store.
• The action response is returned to the client synchronously or asynchronously based on the kind.