Flow Settings

When working inside any Flow in Fastn, you can adjust its behavior and appearance through the Settings option available in the right-hand sidebar.

The Settings panel has two main subsections: Configuration and Visuals.

1. Configuration

The Configuration section controls how your flow runs and how it handles security, validation, and errors.

Flow Type

You must choose how the flow should execute:

🔹 API (Real-Time Sync API)

• Executes instantly and returns a real-time response.

• Used for synchronous tasks where the result is needed immediately.

🔹 Workflow (Async Workflow Job)

• Executes in the background without blocking the request.

• Suitable for asynchronous or heavy jobs.

• When you select Workflow, additional options appear:

  • Memory Limit – Maximum memory allocation (e.g., 2 GB).

  • CPU Limit – Maximum processing power allocated (e.g., 1 vCPU).

  • Priority – Determines how quickly the workflow is executed (Low/Medium/High).

  • Timeout (min) – Maximum duration before the workflow stops.

When Workflow is selected, a new Trigger section appears in the left sidebar, where you can define how the workflow is initiated:

• Manual – Run the workflow manually.

• Event – Triggered by an event.

• Schedule – Triggered at scheduled intervals.

Validation & Multi-Tenancy

• Enable Validation – Enforce schema validation for flow input.

• Enforce Multi-Tenancy – Require the x-fastn-space-tenantid header to ensure the flow only accesses resources for the specified tenant.

Authentication

• Enable Custom Authentication – Allow access with an Authorization header instead of x-fastn-api-key.

• Uses the fastnCustomAuth flow for validation.

• You can customize this authentication flow as needed.

Error Notification

• Enable Error Notification – Forward errors to a notification flow (e.g., sending alerts to Slack).

• You can customize this with the fastnErrorNotification flow.

2. Visuals

The Visuals section customizes the flow editor interface.

• Enable Side Action Panel – Displays a quick-access panel for drag-and-drop actions.

• Enable Flow MiniMap – Adds a minimap to navigate large or complex flows.

• Activate Dark Mode – (Coming Soon) Switches the editor to dark theme.