FAQ

Where do I find my Kit API key?

Log in to Kit and go to Settings → Advanced → API. You'll see both a public API key and an API Secret. Use the API Secret when setting up your Coupler.io data flow — it's the longer string and provides the access level needed for data exports.

Can I sync data from multiple Kit accounts?

Yes. Create a separate data flow for each Kit account using that account's API key. If you want to combine subscriber data from both accounts into one destination, add them as multiple sources in the same data flow and use the Append transformation to stack the records.

What does the start date parameter actually control?

The start date tells Coupler.io where to begin fetching records. For example, if you set it to six months ago, only subscribers, purchases, and broadcasts created or updated from that point forward will be included. Use the date picker to set this — it's especially useful for large accounts where pulling all historical data would be slow.

Can I get broadcast open rates and click rates from Kit?

Not through Coupler.io — Kit's API doesn't expose per-broadcast engagement metrics like open rates or click-through rates. You can pull broadcast metadata (subject line, send date, content), but performance data is only available inside the Kit dashboard itself.

Why do the Form subscribers, Sequence subscribers, and Tag subscribers entities look different from Subscribers?

These association entities return relationship records — essentially a list of subscriber IDs linked to a form, sequence, or tag. They don't include full subscriber profiles. To enrich them with names and email addresses, add the Subscribers entity as a second source and use a Join transformation on the subscriber ID field.

Can I use Kit data with AI tools?

Yes. Coupler.io supports AI destinations including ChatGPT, Claude, Gemini, Cursor, Perplexity, and OpenClaw. You can route your subscriber or broadcast data directly to these tools — useful for tasks like summarizing audience trends, drafting reports, or generating segmentation recommendations.

Is there a way to track subscriber revenue in Coupler.io?

Yes — export the Purchases entity and join it with Subscribers using the subscriber_id field. This gives you a combined view of purchase amounts, product names, and subscriber details. From there you can use Coupler.io's Aggregate transformation to calculate total revenue per subscriber or per product.

For a full breakdown of fields available in each entity, see the Data Overview article. If your sync isn't returning the data you expect, check the Common Issues article for troubleshooting steps.