Collaboration overview

Every prop in Prophouse has a full version history, and your team works on it together through a small set of tools: an exclusive check-out so two people don’t edit the same prop at once, reviews that record who approved which version, comments and markup for feedback, and an inbox that tells you when something needs your attention.

How the pieces relate

A prop you see in the library is backed by a chain of immutable versions. Pushing changed bytes adds a new version, and the prop’s current version moves to it. Nothing is overwritten: you can open the version history at any time and restore an older one.

Most collaboration features attach to a specific version rather than to the prop as a whole:

• A review decision belongs to one version. Pushing a new version resets the prop’s badge to Draft, and restoring an approved version brings its Approved badge back.
• A comment can be about the whole asset or pinned to the current version.
• Markup is drawn on one exact preview image or 3D preview, so it never drifts when a preview is regenerated.

A check-out lock, by contrast, covers the prop’s whole version history: while you hold it, other people’s pushes of new versions are held back and they can’t restore an earlier version.

Where you do each thing

Task	Web library and desktop app	Unreal plugin	AI agents (MCP)
See version history, restore	Yes	No	get_version_history, restore_version
Check out and release	Yes	Yes (catalog browser)	checkout_prop, release_checkout
Check in a new version	Desktop app only	Yes (Push to Prophouse…)	checkin_prop
Request and respond to reviews	Yes	Shows review state and decisions	Review tools
Comment, mention, react, mark up	Yes	No	add_comment, resolve_comment
Inbox and watching	Yes	No	get_notifications, watch_prop

The desktop app runs the same library interface as the web app, plus local features such as the Checkouts and Conflicts pages and native notifications. Collaboration state lives on the server, so check-out, release and review actions need a connection.

In this section

Versions & historyHow versions are created, the version history view, restoring, and variants.

Check-out & check-inExclusive locks, expiry, and checking in from each client.

ReviewsReview states, rounds, the review workspace and the review queue.

Comments & annotationsThreads, mentions, reactions, markup attachments and pinned annotations.

Notifications & watchingYour inbox, what triggers a notification, and watching a prop.

For agents, every workflow on these pages has an MCP tool. See the tool reference.