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You need an active Fastbill account to access the API.

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Finding Your API Credentials

To connect Fastbill with StackOne, you’ll need your account email address and API key.

1

Sign in to Fastbill

Sign in to your Fastbill account.

Fastbill sign-in page with the E-Mail, Passwort and Login controls highlighted.
2

Open Settings

Navigate to your account settings.

  • Click on your name or avatar in the upper right corner
  • Select Einstellungen (Settings)
Fastbill account menu with Settings highlighted.
3

Locate Your API Key

Find your API key at the bottom of the Settings page.

  • Scroll down to the bottom of the Settings page
  • Your API key is displayed in the FastBill API Key section
  • Copy the API key and store it securely for use later
  • To generate a new key, click Generate a new key (Neuen Key generieren) below the key
Fastbill Settings page with the FastBill API Key section highlighted (redacted).
4

Note Your Email Address

Use the same email address you use to log in to Fastbill.

1

Connect

  • Click Connect.
  • If applicable, the provider will redirect you to a sign-in or authorization page. Complete the provider’s authorization flow.
  • Once authorization is successful, you will see a confirmation popup.
2

Use Actions

Connect an AI platform to the linked account’s actions. See AI Platforms.Other ways to call actions are listed in Protocols & SDKs.

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Next Steps

Webhooks setup

Configure receiving Events for Fastbill into StackOne.