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

# Event Schema

> Required fields, supported events, and user_data

## Required

* `pixel_id` (string)
* `event_name` (string)

## Recommended

* `event_id` for deduplication
* `timestamp` (ISO 8601)
* `url`, `referrer`
* `value`, `currency` (for revenue events)

## user\_data

Provide user identifiers to improve match quality (hashed server-side):

* `email`
* `phone`
* `first_name`, `last_name`
* `city`, `state`, `zip`, `country`

See also: [API Reference](/api-reference/introduction)