Design Agent
Two kinds of design agent. One watches you work. The other works with you.
Google Stitch introduced a Design Agent that reasons across your project inside a canvas. LoomX is a runtime advisor: silent design judgment embedded in the coding workflow. Different paradigms for different stages of design.
Canvas agent vs runtime advisor
Stitch Design Agent
Canvas Agent
- Reasons across project evolution inside the Stitch canvas
- Generates and critiques designs
- Works inside a browser tab
- Paired with Voice Canvas for spoken design feedback
LoomX
Runtime Advisor
- Silent design judgment embedded in the coding workflow
- Evaluates expression quality at resolution time
- Works inside Claude Code, Cursor, Lovable
- No separate canvas needed
How they work
Stitch Design Agent
01
Open Stitch canvas
Launch Google Stitch in a browser tab and start a new project.
02
Describe design objective
Tell the agent what you want via text or voice prompts.
03
Agent generates screen directions
The Design Agent reasons across your project and produces multiple design options.
04
Iterate with voice feedback
Use Voice Canvas to speak design critiques and refinements.
05
Export as React or design.md
Take your designs out of the canvas and into your codebase.
LoomX
01
Describe your brand once
Express your brand personality, values, and aesthetic in natural language.
02
Code with any AI agent
Use Claude Code, Cursor, or Lovable as you normally would.
03
LoomX evaluates expression quality
Silent design judgment runs at resolution time against your brand contracts.
04
Silent guardrails enforce brand contracts
Deterministic rules ensure every output matches your expression system.
05
Ship production code with zero design debt
Code that works and looks intentional. No extra design phase required.
Feature comparison
| Feature | Stitch Design Agent | LoomX |
|---|---|---|
| Where it runs | Stitch canvas (browser tab) | Inside your coding agent |
| Input method | Voice + text prompts | Brand description (once) |
| Output | Screen designs + prototypes | Expression quality evaluation + guardrails |
| Integration | Stitch MCP server (5 tools) | designless MCP server (6 tools) |
| Determinism | Non-deterministic | Deterministic |
| Workflow | Separate design phase | Embedded in development |
| Best for | Exploration + prototyping | Production + governance |
The missing paradigm
The industry assumed design agents would be canvas tools. A separate tab. A visual workspace where an AI generates screens, critiques layouts, and exports artifacts for developers to implement. Google Stitch's Design Agent is the best version of this paradigm.
But something changed. Your coding agent became the compositor. Claude Code, Cursor, and Lovable don't just write logic — they generate entire interfaces. When the agent writing your code is also making design decisions, the design agent needs to be embedded in that workflow, not in a separate tab.
LoomX is the design agent for this reality. It doesn't generate screens. It provides silent, deterministic design judgment at the moment your coding agent resolves an interface. No context switching. No copy-paste. No separate design phase.
Design judgment, embedded.
Describe your brand once. Get a silent design advisor that works inside your coding agent. Deterministic, enforceable, zero context switching.
Get Started
Explore the MCP Server
Go deeper
▸ Google Stitch Alternative
▸ Vibe Design
▸ designless MCP Server
▸ How to Train Your Agent
▸ LoomX origin story
▸ Design skills for AI agents
Frequently asked questions
What is an AI design agent?
An AI design agent is software that makes design decisions autonomously within a workflow. Canvas agents like Google Stitch's Design Agent generate and critique designs inside a visual canvas. Runtime advisors like LoomX evaluate expression quality silently inside your coding agent, with no separate tool needed.
What is the difference between Google Stitch's design agent and LoomX?
Google Stitch's Design Agent is a canvas agent that reasons across project evolution inside the Stitch canvas, generates screen directions, and supports voice feedback. LoomX is a runtime advisor that embeds silent design judgment inside your coding workflow (Claude Code, Cursor, Lovable) and evaluates expression quality at resolution time. Stitch is for exploration. LoomX is for production governance.
Can I use a design agent with Claude Code?
Yes. LoomX works as a runtime advisor inside Claude Code via the designless MCP server. It evaluates expression quality and enforces brand contracts silently while you code, with no separate canvas or browser tab required.
Do I need a separate design tool with LoomX?
No. LoomX is embedded directly in your coding workflow. You describe your brand once, and LoomX provides silent design judgment and guardrails inside whatever AI coding agent you already use. There is no separate canvas, no extra browser tab, and no context switching.
How does LoomX work with the designless MCP server?
The designless MCP server exposes 6 tools that AI coding agents call at resolution time. LoomX evaluates expression quality against your brand contracts through these tools, providing deterministic design judgment without requiring a separate design phase.