SIP-32: Event tracking method for pre-installed Snaps

Abstract

This Snap Improvement Proposal (SIP) introduces a new method, snap_trackEvent, allowing pre-installed Snaps to submit tracking events through the client. The client will determine how to handle these events.

This feature enables Snaps to utilize the existing client infrastructure for event tracking while maintaining user privacy.

Motivation

Currently, there is no standardized way for pre-installed Snaps to submit analytics or tracking events. This proposal aims to:

• Enable pre-installed Snaps to leverage the client’s event tracking infrastructure.

• Ensure that event handling is controlled at the client level and conforms to security and privacy controls enforced by the client.

Specification

Language

The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “NOT RECOMMENDED”, “MAY”, and “OPTIONAL” written in uppercase in this document are to be interpreted as described in RFC 2119

snap_trackEvent

The snap_trackEvent method allows pre-installed Snaps to submit structured tracking events to the client. It is the client’s responsibility to process these events accordingly.

The snap_trackEvent method is endowed on any Snap that the client considers pre-installed.

Parameters

• event - Event object to be tracked.

  • event: string - The name of the event to track.

  • properties: Record<string, Json> - (Optional) Custom values to track. The client MUST enforce that all keys in this object are in the snake_case format.

  • sensitiveProperties: Record<string, Json> - (Optional) Sensitive values to track. These properties will be sent in an additional event that excludes the user’s metaMetricsId. The client MUST enforce that all keys in this object are in the snake_case format.

Returns

Resolves to null when the event is successfully handled by the client.

Example

await snap.request({
  method: 'snap_trackEvent',
  params: {
    event: {
      event: 'Account Added',
      properties: {
        message: 'Snap account added',
      },
      sensitiveProperties: {
        account_type: 'Hardware Wallet',
      },
    },
  },
});

Copyright

Copyright and related rights waived via CC0.

Citation

Please cite this document as:

Daniel Rocha, "SIP-32: Event tracking method for pre-installed Snaps [DRAFT]," Snaps Improvement Proposals, no. 32, March 2025. [Online serial]. Available: https://github.com/MetaMask/SIPs/blob/master/SIPS/sip-32.md