Composer | Architecture diagramming and system design tool
Describe your architecture, connect your codebase, and watch it build. Composer is an AI-powered system design tool.
45
Partial
Agentic Readiness Score
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Raise this score to 95+
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ai-tools
llms-txtapiai-friendly
Agentic Signals
Found
ai-plugin.json
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OpenAPI Spec
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Structured API
Found
Allowed
Schema.org Markup
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MCP Server
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llms.txt Content
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
<title>Composer | Architecture diagramming and system design tool</title>
<!-- SEO -->
<meta name="description" content="Describe your architecture, connect your codebase, and watch it build. Composer is an AI-powered system design tool." />
<link rel="canonical" href="https://usecomposer.com/" />
<!-- Open Graph -->
<meta property="og:type" content="website" />
<meta property="og:site_name" content="Composer" />
<meta property="og:title" content="Composer — System Design Made Visible" />
<meta property="og:description" content="Describe your architecture, connect your codebase, and watch it build." />
<meta property="og:image" content="https://usecomposer.com/og-image.png" />
<meta property="og:url" content="https://usecomposer.com/" />
<!-- Twitter Card -->
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Composer — System Design Made Visible" />
<meta name="twitter:description" content="Describe your architecture, connect your codebase, and watch it build." />
<meta name="twitter:image" content="https://usecomposer.com/og-image.png" />
<!-- Icons & Theme -->
<link rel="icon" type="image/svg+xml" href="/logo_warm_trio_no_bg.svg" />
<link rel="icon" type="image/png" sizes="192x192" href="/icon-192.png" />
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png" />
<meta name="theme-color" content="#353532" />
<link rel="manifest" href="/site.webmanifest" />
<!-- Preload hero image -->
<link rel="preload" as="image" href="/images/mainbg.webp" type="image/webp" />
<!-- Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link href=