Connectors

Link your Fastn flow to external services and APIs like Slack and HubSpot. Configure prebuilt connectors to automate data exchange across 250+ apps.

The Connectors component links your flow to external services and APIs — such as Slack, HubSpot, or Google Sheets — enabling seamless data exchange. Use it whenever your flow needs to read from, write to, or trigger actions in a third-party application. Fastn provides 250+ prebuilt connectors, each with ready-to-use endpoints you can configure without writing code.

When you add a connector step, you'll go through:

• Select: Choose the group type (Fastn Connector or Custom Connector) → then select the app.

• Endpoint: Pick the task you want to automate (e.g., sendMessage, getContacts).

• Connect: Authenticate by connecting your account.

For example, for the Google Cloud Storage Connector, a selected endpoint can be createBucket.

• Configure: Fill in the required fields or map from previous steps.

In this example,

Google Cloud Storage - Create Bucket

This connector action lets you create a new storage bucket in your Google Cloud project. You can map variables or outputs from previous steps into its configuration.

Params mapped in configuration

param.project      = {{var.googleProjectId}}
body.storageClass  = STANDARD
body.name          = {{var.bucketName}}
body.location      = US

• param.project is mapped from a variable that holds your GCP project ID (googleProjectId).

• body.name is dynamically mapped from a variable bucketName ; allowing each flow run to create a bucket with a unique name.

• body.storageClass and body.location are fixed values here (STANDARD, US) but could also be mapped from variables or other steps.

The configuration parameters can be static values or mapped from previous steps as shown in this example.