Flow Callback Node
| Description | The Flow Callback node interrupts the current flow and sends a response back to the client. This allows external systems or clients to interact with the flow asynchronously. Execution can be resumed later by calling the flow again and providing the Flow Session ID in the request header, so the flow continues from the same point. |
| Available in | API, Custom, User Defined |
| Node Name | Flow - Callback |
Node Configurations
Body
Defines the **HTTP response body** returned by the node. The value you configure (JSON or plain text) is returned to the client as the response body.Status
Defines the **HTTP status code** returned in the response.API Headers
Allows you to define custom **HTTP headers** to include in the response. These headers are returned together with the response body and status code.Cookie Configurations
Allows you to include **Set-Cookie headers** in the response. You can create, modify, or expire cookies that will be sent to the client.Save in the Flow store
Attributes generated or retrieved from the node can be saved **into a variable** and reused by other nodes in the flow. See [Common Configurations]({filename}/pages/io/io-nodes/io-node-types/common-configurations.md#save-in-the-flow-store) for details.Default Output Node
- Success
- Failure
