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NEWMCP server — bring your own agent

Build in 3D.
Stream it anywhere.

Substrate is the editor for interactive Unreal experiences. Shape scenes with your team and your own agent, then stream them to any site from your own GPU or ours.

Start buildingDownload Connect
The Substrate editor: the Showroom scene's layers, an orb lamp selected on a plinth in the viewport, and its transform and material.

01Agents

Your agent builds next to you

Connect Claude, Cursor or Codex on the plan you already have. It reads the scene and makes changes you can see, and you keep what you like.

Connect your agent
Claude placing a rim light in the Showroom scene, shown as a purple preview with its steps listed beside it.

A1Build scenes with an agent

It reads the scene, places lights and tunes materials, live in Unreal. Every change is a preview you keep or undo.

The Variants view: a Finishes collection with Porcelain, Graphite, Chrome and a Frosted glass row added by Claude.

A2Fill Variants from a spreadsheet

Finishes, sizes and camera shots are collections bound to the scene. Your agent keeps them in sync with your catalog.

The Sequencer: camera cuts, keyframed tracks and a score on a timeline, with the playhead at eight seconds.

A3Direct a launch film

Ask for a film and get shots, camera moves and cuts on the Sequencer’s timeline, ready to tweak frame by frame.

Claude in its own app, connected to Substrate: asked to light the orb like a product shot, it reads the scene and adds a rim light, with an Undo for both changes.

02Platform

Everything between the model and the stream

Real Unreal underneath, none of the setup. Import, light, configure, film and stream from one place, on your GPU or ours.

Stream vitals: first frame in 1.4 s, 22 ms input latency, 60 fps.

Streaming

Pixel Streaming from GPUs near every visitor.

The editor's Assets panel listing the Orb Lamp, Plinth and Speaker models and their materials.

Assets

GLB, FBX, USD and OBJ arrive lit, scaled and editable.

A digital human in profile, with Face, Body and Outfit tabs.

Human

MetaHumans you shape once and cast anywhere.

Who's in Showroom now: Chris editing the Orb Lamp, Mira commenting, Claude placing a rim light.

Multiplayer

Your team and your agents in the same scene.

1080p60 per viewer.

GPU cloud

Unreal instances that scale with your audience.

Lighting presets: Key + rim applied, Soft box and Silhouette.

Lighting

Studio, outdoor and interior presets.

A browser address bar on a custom domain.

Domains and embeds

Your own domain, or one tag on any site.

A project's streaming overview: viewers watching now, sessions over seven days and the average session.

Analytics

Sessions, regions, latency and the Variants people pick.

Streaming from two sources: a Studio PC through Substrate Connect, and Substrate Cloud.

Your GPU or ours

Stream from your own PC with Substrate Connect, free.

03Starters

Start from a starter, not an empty level

Every starter is a real Unreal scene with lighting, cameras and Variants wired up. Preview it live in your scene before you apply it.

The editor's Insert panel on Lighting: Soft box, Key + rim, Top light and Silhouette presets, with Key + rim previewing on the scene.

Your next scene starts here

Connect the agent you already pay for. Substrate adds its tools, your plan does the thinking.

https://neat-bison-376.eu-west-1.convex.site/mcp

In Claude, Settings → Connectors → Add custom connector, then allow it for your team.

Product showroomCar configuratorLaunch filmVirtual event
Start without an agent