{"command":{"effect":"read","timeoutSeconds":30,"inputSchema":{"type":"object","description":"**This endpoint allows you to retrieve the default authentication for a domain.**\n\nWhen creating or updating a domain authentication, you can set the domain as a default. The default domain will be used to send all mail. If you have multiple authenticated domains, the authenticated domain matching the domain of the From address will be used, and the default will be overridden.\n\nThis endpoint will return a default domain and its details only if a default is set. You are not required to set a default. If you do not set a default domain, this endpoint will return general information about your domain authentication status.","properties":{"query":{"type":"object","properties":{"domain":{"type":"string","description":"The domain to find a default authentication."}},"required":[],"additionalProperties":false},"headers":{"type":"object","properties":{"on-behalf-of":{"type":"string","description":"The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You will use the parent account's API key when using this header. When making a call on behalf of a customer account, the property value should be \"account-id\" followed by the customer account's ID (e.g., `on-behalf-of: account-id <account-id>`). When making a call on behalf of a Subuser, the property value should be the Subuser's username (e.g., `on-behalf-of: <subuser-username>`). See [**On Behalf Of**](https://docs.sendgrid.com/api-reference/how-to-use-the-sendgrid-v3-api/on-behalf-of) for more information."}},"required":[],"additionalProperties":false}},"required":[],"additionalProperties":false},"name":"Get the default authentication","id":"sendgrid.domain_authentication.listdefaultauthenticateddomain","example":{},"maxRequests":1,"summary":false}}