Core concepts

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Home

Desktop Home gives you shortcuts to your creative tools. Discover features Cast alongside featured models and Melius MCP. Cast opens its studio. The separate Playground section lets you open the prompt box without opening a project. When Explore is available, browse its catalog below Playground or choose View more to open the full Explore page. Keep scrolling to discover more ideas. Featured sits at the top of the catalog — a sideways row of every workflow you can run, staff picks first. Choose View all workflows to lay the same row out as a grid. Below it, the catalog holds two kinds of card, and the filters beside the search box narrow it to either one: Styles are looks you apply to your own subject, and Workflows run a sequence of steps on what you give them. All mixes both. When browsing styles, Melius’s staff picks appear first, followed by the rest of the catalog. Your team’s saved Favorites stay available in their own list. You can also open Templates under Library and Academy under Learn in the sidebar.

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Projects

A project is the top-level container. It belongs to a team and holds one or more canvases, plus project-level settings (members, sharing, fonts). To keep your project list open, right-click a project card or row and choose Open in new tab. The same action is available in the project’s three-dot menu, including recently viewed projects on Home. It opens the last canvas you viewed in that project, or the first canvas if you haven’t opened one yet. Select a single project to use this action.

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Canvases

A canvas is an infinite 2D surface inside a project. Most projects start with a single canvas, but you can add more — for example, one canvas per scene, ad concept, or experiment. To move between canvases, click the canvas name next to the project name at the top of the canvas. When a project has more than five canvases, type in the search box to find one by name, and press Enter to open the highlighted one. Recent lists the canvases you opened most recently, on any device, above the full list.

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Nodes

A node is a single unit on the canvas — text, image, video, audio, file, custom text, or group. See Nodes for types, anatomy, and how to create them.

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Edges

An edge is a directed wire from one node’s output to another node’s input. See Edges & data flow for types and creation.

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Runs

A run is one execution of a node against its model. Every run produces a new version on that node. Older versions are kept — switch between them with the version selector.

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Versions

Each run on a node creates a new version. You can:

• Select which version is the “active” version (the one that downstream edges read).
• Compare versions side by side.
• Delete versions you no longer want.

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@ mentions

Type @ in any prompt to reference another node. Melius treats the mention as an input edge — the referenced node’s output is wired into the prompt automatically. This is the fastest way to compose nodes without dragging wires.

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Sticky notes vs. comments

Two ways to annotate the canvas:

• Sticky notes are lightweight yellow notes you drop anywhere on the canvas. Click to edit the text inline, drag to move them around, @-mention teammates inside the body. Only the author of a sticky note can edit or delete it — everyone else on the canvas sees it but can’t change it. No threads, no resolution.
• Comments are threaded discussions pinned to a point on the canvas or a specific node. They support replies, resolution, and @-mentions of teammates. Use them for review, feedback, and decisions you want to track.

Rule of thumb: sticky notes are for organizing the canvas; comments are for talking about the canvas.

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Finding a canvas comment

Pick the Comment tool in the bottom toolbar and a Comments panel opens on the right, listing every comment on the canvas newest first. Type in Search to narrow the list by comment text or author name. Select a comment to move the canvas to its pin and open the thread, and hover a comment you wrote to delete it. Switching to another tool closes the panel.

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Editing asset comments

In an asset’s Comments sidebar, hover over your comment or reply and click Edit (the pencil). Update the text, then click Save or press Enter. Use Shift+Enter for a new line, or Cancel or Escape to discard your edit. You can edit your own comments while you have editor, admin, or owner access to the team. Saved changes show an (edited) label and keep the original timestamp, position, attachments, and replies. Editing a comment does not send another notification.

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Real-time collaboration

Every canvas is real-time and collaborative by default. Edits, runs, comments, and cursors sync instantly across every participant, including AI agents driving the canvas through the MCP server. You don’t enable collaboration or share a “session”; the canvas itself is the shared surface. This powers:

• Presence — see who (or what) is on the canvas right now.
• Live edits — node moves, prompt changes, and new runs propagate as they happen.
• Comments and sticky notes — annotations show up for everyone immediately.
• Agent coordination — agents claim a region of the canvas while they work, so humans and other agents can stay out of the way.

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Presence

Both human collaborators and AI agents appear on the canvas as cursors. When an AI agent is working, a highlighted area shows which part of the canvas it’s focused on, so you can see what it’s doing in real time.