Product hero
A lit product scene, ready to embed
Connect your agent to Spline
Let Claude, ChatGPT, Cursor and other agents build 3D scenes and Hana designs with you.
1Copy the Spline URL
You’ll paste it in the next step.
2Open Settings › Connectors
In Claude, go to Settings › Connectors and choose Add custom connector.
3Connect and sign in
Name it Spline, paste the URL and sign in with your Spline account. Then ask for a scene or a design.
How it works
From your chat to a live file
Every change lands in a live file you can take over.
- 01 · AskYBuild a floating islandBuild a floating island
You
Describe what you’d like to do.
- 02 · PlanPlanning the scene
Your agent
Picks the Spline tools to call.
- 03 · Route
Spline MCP
Routes each call to your editor.
- 04 · BuildAgentAna
Spline Editor
Makes the changes on the live file.
Briefs
Start from a brief
Click one to open it in your agent, with the brief filled in.
Floating island
A small world with light and water
Generated character
A generated model, placed and lit
Hover and click
States and events on what you select
Tiny game level
A playable level with physics
Pricing page
Desktop and mobile frames, editable
Dark theme and back to code
A restyled screen, exported as HTML
From your code
Your component as a frame to edit
Privacy and security
Access on your terms
01
Your account, your grant
Agents sign in with OAuth as you. Each grant belongs to one person, and revoking it stops its tokens working.
02
Calls stay in their conversation
Each chat’s calls run in the editor it opened, never in another conversation’s file.
03
Or keep it local
With the desktop app the server binds to 127.0.0.1, behind an origin allowlist, and is never reachable from the network.
FAQ
Questions, answered
Do I need an API key?
No. Your agent signs in with your Spline account through OAuth, the first time it connects. There’s no key to create, paste or keep safe.
Is there a Spline plugin?
Yes, for ChatGPT and Codex. Pick your agent at the top of the page to add it, or connect the Spline MCP server by URL in any other MCP client.
Do I need the Spline desktop app?
No. Add the remote server to your agent and sign in, and its calls run in Spline in your browser. The desktop app is the alternative if you want the server running locally, and it sets up supported agents for you.
Where do the agent’s changes happen?
In a real Spline file. In ChatGPT the editor opens in a panel in the conversation; other agents give you a link that opens the file in your browser, so you can watch, take over or keep editing yourself.
Which agents work with it?
Any MCP client that supports remote servers (streamable HTTP) with OAuth sign-in, including Claude Code, Claude Desktop, ChatGPT, Codex, Cursor, VS Code, Antigravity, Grok and Grok Build.
The Spline tools don’t appear in my agent
Check the server URL is https://mcp.spline.design/mcp and that you finished signing in; most agents show a sign-in or authenticate action next to the server. Some only load MCP servers at startup, so restart the agent after adding it.
How do I disconnect an agent?
Remove the Spline server from that agent’s MCP settings. Its grant is tied to your account, and revoking it stops the agent’s tokens working right away.
Start building in 3D
Connect your agent, invite your team and ship your first 3D scene today.