Designing a Flow

Fastn’s visual canvas allows you to build workflows by dragging and connecting flow components. Each component represents a logic or data processing block.

At Fastn, flows are built using a set of core elements that define the structure and behavior of your automations.

These include components such as the starting point of a flow, the steps it performs, how data moves between those steps, and how different services are connected.

Flow Elements in Fastn

These are the building blocks you’ll use to create automations in Fastn. Each element plays a specific role in making your flows powerful, flexible, and easy to maintain.

You can select any flow component you want from the right navigation bar, or click the plus (+) icon in your flow steps and search for the component name to add it.

Connector

Connect to external apps and APIs to send or receive data seamlessly.

Database

Query or update Fastn’s internal database using SQL commands.

Data Mapper

Transform and map data between steps or formats within your flow.

Variables

Store and reuse dynamic values, flags, or configurations across steps.

Switch

Add conditional logic to branch your flow based on data or rules.

Loop

Repeat steps for a list of items or until a condition is met.

Download File

Retrieve files from URLs to use or process within your automation.

Converter

Change data formats for compatibility.

Custom Code

Add logic with custom scripts in JavaScript, Python, or C#.

Flow Response

Define structured success or error responses when the flow ends.

AI Agent

Build intelligent, multi-step automations powered by your chosen model.

AI Action

Trigger quick, single-step actions using natural language prompts.

Logger

Record custom messages or data for debugging and monitoring.

Trigger

Initiate a flow whenever a specific event occurs in a connected app.

Summarization Chain

Condense large documents, chat logs, or articles into short, readable outputs while maintaining key context and intent.