> ## Documentation Index
> Fetch the complete documentation index at: https://docs.clinkbill.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Link External Account

> Connect with your existing payment processors

## Overview

Clink is fully **PCI DSS 4.0.1 compliant**, enabling secure connections with your existing payment service providers to process customer payments, renewals, and subscriptions.

We support multiple external providers and multiple accounts per provider, with configurable routing rules to manage transaction flows according to your needs.

## Connection Management

### Add a Connection

Prerequisites:

* An active account with the target payment provider
* Card payment method enabled with raw PAN payment capability
  * If required, contact us for an Attestation of Compliance (AoC) report

Steps to add a connection:

1. Go to **Settings** -> **Merchant** (select the relevant merchant account if you have multiple)
2. Click **Linked Payment Services Providers**, then **New Connection**
3. Complete the connection form:
   1. Select your provider from the dropdown list
   2. Enter your API Key (we apply PCI requirements on API Key persistence)
   3. Provide your Channel Merchant ID
      * For AirWallex: Use the Client ID associated with your API Key
      * For Stripe: Optional - use account name (without spaces) or account ID for reference
   4. Enter the API endpoint URL
      * Some providers (e.g., Adyen) offer account-specific endpoints
      * Others (e.g., Stripe, AirWallex) use a common endpoint - refer to their developer guide
   5. Set up webhook integration:
      * Copy the **Clink Generated Webhook URL**
      * Create a webhook endpoint in **your provider's dashboard**
      * Ensure payment-related events are selected
   6. Copy the webhook signature from your provider and paste it into **Webhook Signature Key**
   7. Click **Confirm** to save

### Edit Connection

To modify an existing connection:

1. Navigate to **Settings** -> **Merchant** -> **Linked Payment Services Providers**
2. Find the connection you want to update
3. Click the **Edit** button on the right
4. Make your changes and click **Confirm**

<Note>
  All changes take effect immediately.<br />
</Note>

### Delete Connection

To remove an existing connection:

1. Navigate to **Settings** -> **Merchant** -> **Linked Payment Services Providers**
2. Locate the connection to delete
3. Click the **Delete** button on the right
4. Confirm by clicking **OK**

<Danger>
  Without an active connection, all customer payments and subscription renewals will fail.
</Danger>