How do I check the properties of my custom event?
There are several ways to check the properties of your custom event in Mixpanel:
1. Use the Events View (Live View)
The Events report lets you see events and all their properties in real time as they flow into your project. [Debugging guide]
Navigate to Data > Events in the left-hand navigation.
Search or filter by distinct_id, $user_id, $device_id, or a user property value to find your own events.
Click the > arrow to expand an event and inspect all its properties.
Use the Your Properties tab for custom properties and Mixpanel Properties for default ones.
Toggle JSON mode to view the complete raw JSON payload, which is especially useful for spotting data type inconsistencies.
2. Use Lexicon
Lexicon (Data Management > Lexicon) is Mixpanel's data dictionary and shows metadata for all your events and their properties, including display names, descriptions, example values, and status. [Lexicon overview]
Go to Event Properties in Lexicon to see which properties are associated with your events, their data types, and how frequently they appear.
3. Use the User Profile Activity Feed
The User Profile Activity Feed lets you inspect all events for a specific user, including their properties, in chronological order. [QA & data audit]
4. Use the Mixpanel Data Inspector (Browser Extension)
If you're testing a web implementation, the Mixpanel Data Inspector browser extension shows events and their full JSON payloads in real time as they're sent from your site. [Data Inspector]
Key things to verify when checking properties:
All expected properties are present.
Property values match what you intended.
Data types are correct (e.g., numeric values are not sent as strings).
Property names use the correct casing — Mixpanel is case-sensitive. [Debugging guide]
ℹ️ Tip: Mention @kapa.ai in the thread for follow-ups or DM the app for 1-to-1 help.
