The Playground is a live console inside Studio. Use it to test a channel rule, see what a payload looks like on the wire, or watch what a feature is publishing.
Playground

Realtime → Playground: Watch a channel.

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Open it

Services → Realtime → Playground (under Tools).

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Watch a channel

Under Watch a channel, enter a channel name (for example chat:lobby, orders:created) and join. Until you do it says Nothing watched yet. The live view shows: Presence members (Present) appear and disappear as people join and leave.

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Send a message

Enter an event name and a payload (JSON) and send. Everyone subscribed, in the Playground or in your app, receives it. Use it to simulate your server publishing: “send an export.ready to user:42”.

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Useful checks

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Coming from other pages

Many Studio pages have a Watch link: from Channels and Subscriptions it opens the Playground on that channel.

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Limits

The Playground connects with Studio’s own authority, so it ignores your Subscribe and Publish policies. To prove a rule, test from your app signed in as the person it should affect.

Channel rules

Test a rule.

Monitoring

The live overview.