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Prerequisites

Slicker integrates with Checkout.com via API keys to sync payment data and provide insights into failed transactions. To set up this integration, you need:
  • A Checkout.com account with access to API keys
  • Admin or Developer permissions to generate API credentials
  • Access to your Checkout.com dashboard

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Create API credentials

  1. Log in to your Checkout.com dashboard.
  2. Navigate to Settings → Developers → Keys.
  3. Generate a new Secret API Key if you don’t already have one:
    • Click Create new key
    • Give it a descriptive name like Slicker Integration
    • Configure the scopes to include the Payments scope, along with reports and reports:view permissions
  4. Copy the Secret API Key - you’ll need this for the Slicker integration.
Keep your Secret API Key secure. Slicker only needs read permissions to sync payment data and analyze failed transactions.

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Create integration in Slicker

  1. Go to Slicker’s new integration page.
  2. Select Checkout.com from the list of payment integrations.
  3. Provide the following information:
    • Integration name: A descriptive name to help you identify this integration
    • Description: Optional description for additional context
    • Secret API Key: The key you copied from your Checkout.com dashboard

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Configure webhooks

For real-time payment updates, configure webhooks:
  1. Copy the Endpoint URL from the Slicker integration page.
  2. In your Checkout.com dashboard, go to Settings → Channels → Webhooks.
  3. Click Create webhook and configure:
    • Endpoint URL: Paste the URL you copied from Slicker
    • Events: Select the Gateway and Reports categories
  4. Copy the Authorization Header Key and Signature Key from Checkout.com into the Slicker integration page.
  5. Save the webhook configuration.

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Save the integration

  1. Click Submit to create the integration.

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What data does Slicker sync?

Once connected, Slicker will sync the following data from Checkout.com:
  • Payment transactions: Successful and failed payments
  • Decline reasons: Detailed information about why payments failed
  • Customer data: Information needed for recovery campaigns
  • Payment methods: Card types and other payment method details

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Troubleshooting

Connection failed error:
  • Verify your Secret API Key is correct and has not expired
  • Ensure the key has sufficient permissions to read transaction data
  • Check that your Checkout.com account is active and in good standing
Missing transaction data:
  • Slicker syncs data from the past 90 days on initial connection
  • New transactions typically appear within 15 minutes
  • Contact support if you’re missing recent transactions
Failed integration creation message
For additional help, contact Slicker support or check our FAQ.