Adding additional API calls

Managing your API call limits is essential for applications with high usage requirements. This article explains how to purchase additional API calls for your Knack account.

What You'll Learn

You'll discover how to increase your daily API call limits through add-on packages, view your current usage and limits, and understand important constraints around API rate limits. This knowledge helps you scale your application's backend operations to meet your needs without disruption.

Purchasing Additional API Calls

To purchase additional API calls for your account:

  1. Navigate to the Plan & Billing section of your Dashboard
  2. Select "Purchase Add-Ons"

Alternatively, you can:

  1. Go to the Plan & Billing page
  2. Select the "Add-Ons" tab at the top
  3. Choose the amount of additional API calls you want to add to your plan

Managing Your API Call Package

If you have previously purchased an API call package, you'll see your current selection marked with a "Current" badge to the right of the number of additional API calls.


To change your API call package:

  1. Select the desired amount of API calls
  2. Review the details of the change in the confirmation modal
  3. Click "Purchase" to confirm

Once confirmed, you'll see a notification that your API add-on calls have been updated successfully.

Removing API Call Add-Ons

To remove your current API plan package:

  1. Click the "Remove" button
  2. Confirm the removal in the modal pop-up

Note: Your changes will be updated and reflected in your "Plan Details" section.

API Call Add-On Options

The following API call packages are available:

  • +25,000 API calls: $37.50 per month
  • +50,000 API calls: $75 per month
  • +75,000 API calls: $112.50 per month
  • +100,000 API calls: $150 per month

Tip: Need more than 100,000 additional API calls per day? Please reach out to our support team for assistance.

Viewing Your API Call Limits

To view your current total daily limit of API calls:

  1. Go to the "Plan Usage" section under the "Overview" tab

Tip: The daily limit shown adds your plan's base limit (e.g., 5,000 API calls) plus any add-on amount you've purchased.

If you have purchased add-ons, you can also view this information under:

  • Your "Plan Details" section
  • The "Add-Ons" section

Important API Limitations

Please note these important constraints:

  • We cannot increase the per-second API call limit at this time
  • We enforce a rate limit of 10 API calls per second - any additional calls after this limit will return an error
  • If you need more than 100,000 additional calls added to your plan, please contact our support team
  • API calls add-ons can only be purchased by the account owner - if you're not the account owner, contact our support team for assistance