Learn how to create the Conversions API key that allows TagFly to send server-side events to ChatGPT Ads.

Before you start: You need a Data Source (Pixel ID) first. See How to find your ChatGPT Ads Pixel ID

Step 1: Open Conversion keys

• Sign in to your ChatGPT Ads Manager account.

• Navigate to Sidebar > Conversions.

• Click Conversion keys icon in the top-right corner.

Step 2: Create a new key

• 2.1. Click + Create new key

• 2.2. Enter a name for the key (e.g., “TagFly”), then click Create

• 2.3. Copy the key immediately and store it somewhere safe or download into your local device

For security reasons, OpenAI will only show you the full secret key once. If you lose it, you’ll need to create a new one.

Step 3: Paste the key into TagFly

• In TagFly, open the ChatGPT Ads channel and paste the key into the Conversions API Key field.

• Click Test connection to see if your ChatGPT Ads account has been successfully connected

• • If connected: Click Next step to proceed with the remaining settings

• • If your connection is rejected
  • • Review the Important Note below and check your Pixel ID và Conversion API key again
    • Or contact TagFly support team via the icon on the bottom left of your setting screen. We shall provide instant support

Important note

• Use the Conversions API key, not an Ads/Advertiser API key from your account settings. These are different keys, and the wrong one will cause events to be rejected.
• The Pixel ID and the API key must come from the same ChatGPT Ads account.
• Treat the key like a password. Don’t share it publicly.

✅ Your ChatGPT Ads connection is now set up!

If you need help, reach out via the in-app chat or schedule a meeting with our team.

Next:

How to set up conversion events in ChatGPT Ads Manager

Updated on: 13/10/2026