The Piano Analytics Tag for GTM Server-Side allows you to send events directly to Piano Analytics from your server container. This tag supports both Piano Analytics and GA4 schemas, automatically mapping event names and formatting parameters accordingly.
It’s designed to integrate seamlessly with the Piano Analytics Client by Stape.
How to Use
- Add the Piano Analytics Tag to your Server GTM container from the Template Gallery.
- Set the Collection Domain (e.g.,
xxxx.pa-cd.com). - Provide the Site ID (optional – will be inherited from the incoming request if not set).
- Set the Visitor ID (optional – inherited from incoming request if not set).
- Choose the Event Name Setup Method:
- Inherit from client – uses the event name from the incoming request. GA4 event names are automatically mapped to Piano Analytics equivalents.
- Custom – define your own event name manually.
- (Optional) Configure options like Redact Visitor IP and Use Optimistic Scenario.
- Add or modify event parameters, and specify any to exclude.
Supported Event Name Mapping
The recommended incoming request format to be used in conjunction with this tag is the Piano Analytics schema, which can be parsed and claimed by the Piano Analytics Client by Stape. This tag seamless integrate with it.
However, it also supports the GA4 schema.
When using the inherit method with a GA4 event schema, the following mappings will be applied:
| GA4 Event | Piano Analytics Equivalent |
|---|---|
page_view |
page.display |
search, view_search_results |
internal_search_result.display |
view_item_list |
product.display |
view_item |
product.page_display |
add_to_cart |
product.add_to_cart |
remove_from_cart |
product.remove_from_cart |
view_cart |
cart.display and product.display |
add_shipping_info |
cart.delivery |
add_payment_info |
cart.payment |
purchase |
transaction.confirmation and product.purchased |
view_promotion |
self_promotion.impression |
select_promotion |
self_promotion.click |
Required Fields
- Collection Domain – Found in Piano’s dashboard under Tagging → Collection Domains.
- Site ID – Found in Piano’s dashboard under the ID column of the desired site. If not set, it will inherit from the Event Data parameter
x-pa-site-idgenerated the by Piano Analytics Client by Stape. - Visitor ID – Must be a 16-character string or a UUID. If not set, it will inherit from the Event Data parameters
client_idorx-pa-idclientgenerated the by Piano Analytics Client by Stape. - Event Name – Either inherited or custom.
Event Parameters
- You can add, overwrite, or exclude event parameters.
- For ecommerce events,
cart_idis essential.- If not set explicitly, the tag will fallback to
transaction_id, though this is not recommended.
- If not set explicitly, the tag will fallback to
Benefits of Using Server-Side Tracking with Piano Analytics
More Accurate Data – Bypasses browser-level restrictions.
Stronger Privacy Compliance – Greater control over what data is collected and stored.
Faster Website Load – Reduces reliance on JavaScript in the browser.
Useful Resources
- Piano Analytics Client by Stape
- Piano Analytics Developer Docs
- Piano Analytics Collection API Reference
- Piano Analytics Standard Events Reference
- Piano Analytics Ecommerce Events Reference
- Step-by-step guide on how to configure Piano server-side tracking
Open Source
The Piano Analytics Tag for GTM Server-Side is developed and maintained by the Stape Team under the Apache 2.0 license.
