# Integrating Amplitude

{% hint style="info" %}
Note: To integrate Amplitude, the **Amplitude project you're using must be on a paid plan**.
{% endhint %}

You can perform various tasks in FlareLane that target Amplitude cohorts.

Once the integration with Amplitude is complete, devices that match the user\_id within the Amplitude cohort will be grouped into a separate segment.

## How to Start

Step 1. In the Amplitude console, go to **Data > Catalog > Destinations > Webhook**.

<figure><img src="/files/Cm7coUI2rEHrsSe9ERFS" alt=""><figcaption><p>Image by FlareLane</p></figcaption></figure>

Step 2. In the **Destinations**, enter the following values in the **Webhook URL** and **Headers** fields, respectively. Select the other options appropriately as needed.

<figure><img src="/files/022P2Sp7KjBoxfUkl0xE" alt=""><figcaption></figcaption></figure>

<table><thead><tr><th width="285">Category</th><th>Input</th></tr></thead><tbody><tr><td>Webhook URL</td><td>http://api.flarelane.com/v1/cohort-sync/amplitude</td></tr><tr><td>Headers (x-flarelane-project-id)</td><td>The ID of the FlareLane project you want to integrate</td></tr><tr><td>Headers (x-flarelane-api-key)</td><td>The API key of the integrated FlareLane project</td></tr></tbody></table>

***

## Integrating Cohorts

Once the integration is complete, you can link the Amplitude cohort to FlareLane following the steps below:

Step 1. In the Amplitude console, click **Audiences > Syncs > Create Sync**

<figure><img src="/files/Ox5VRZuuyZ3l2a87rjT9" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 2. Select the cohort to link, then click **Next**.

<figure><img src="/files/ewPeVMKKeK5uGaSuUiE4" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 3. Select **All Traffic > Webhook** as the Destination.

<figure><img src="/files/EbOSeeT85hDXzWvNcQmS" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 4. Select the **FlareLane integration** that was created earlier.

<figure><img src="/files/9RiWe33loRff90XarnJJ" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 5. Select the **sync type**. For Scheduled Sync, the following conditions apply depending on the type:

{% hint style="info" %}

* **Hourly Sync** can sync up to 1 million users.
* **Daily Sync** can sync up to 10 million users.
  {% endhint %}

<figure><img src="/files/KkE9egP94ZUsoQHBxA8v" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 6. Once the sync begins, a separate segment with an Amplitude badge will be automatically created in **FlareLane segments** as follows:

<figure><img src="/files/J3gKSoO6XQ1bQ2njeTvp" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

***

## Troubleshooting

### Manually Re-Syncing Cohorts

If the Amplitude cohort doesn't seem to be properly synced with FlareLane, you can attempt a manual re-sync. Here's how:

Step 1. In the Amplitude console, hover over the cohort in **Audiences > Syncs** and click **History**.

<figure><img src="/files/GLYlnL1VpqMAj0GZS5Kq" alt=""><figcaption><p>Image by FlareLane</p></figcaption></figure>

Step 2. Click the **Sync** button on the cohort details page.

<figure><img src="/files/ozJR4oncHvwCHht6nl3e" alt=""><figcaption><p><em>Image by FlareLane</em></p></figcaption></figure>

Step 3. In the pop-up, click **Sync Now** to start the re-sync process.

<figure><img src="/files/PqoB7I6W5NT2jmMRUMOm" alt=""><figcaption><p>Image by FlareLane</p></figcaption></figure>


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