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POST

Authorizations

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X-API-Key
string
header
required

Your Conversion API key. Found in Settings > Integrations in the dashboard. Format: sk_live_<key_id>_<secret>.

Body

application/json
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event
string
required

The name of the custom event to track (e.g. order_completed, log_in). This is a freeform string.

Example:

"page_viewed"

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userId
string

An external user identifier for the contact. At least one of userId or email is required. If userId matches a contact, that contact is used. If not, falls back to email. If the email matches a contact that has a different userId, a conflicting_identifier error is returned.

Example:

"user_12345"

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email
string<email>

The contact's email address. At least one of userId or email is required.

Example:

"jane@example.com"

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eventId
string

An optional client-generated identifier for the event. Use stable identifiers (like order IDs) to make retries idempotent: if an event with this ID already exists, the duplicate is ignored, the existing event is left unchanged, and the response reports success with duplicate: true and the original event's cnvEventId. If omitted, a new event is always created.

Example:

"evt_abc123"

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data
object

An optional map of custom data to attach to the event.

Example:
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timestamp
string<date-time>

An optional ISO 8601 timestamp for when the event occurred. Defaults to the current time if omitted.

Example:

"2026-03-31T14:30:00Z"

Response

Event tracked successfully.

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data
object