diff --git a/agent-edge.mjs b/agent-edge.mjs
index cc4e0f3..7bba9d7 100644
--- a/agent-edge.mjs
+++ b/agent-edge.mjs
@@ -14,7 +14,7 @@ const AGENT_SURFACE = {
   "name": "RolePatch",
   "url": "https://rolepatch.com",
   "llmsFullTxt": "# RolePatch — full agent brief\n\nAI-powered resume tailoring. Score fit against a job description, rewrite bullets for the role, and prep interviews.\n\n## Index\n\n# RolePatch\n\nAI-powered resume tailoring and job-application assistant.\n\n## What it is\n\n- Score resume fit against a job description\n- Rewrite bullets for the role\n- Cover letters, company research, STAR prep\n\n## Who it's for\n\nJob seekers who want reviewed, role-specific application materials — not generic AI fluff.\n\n## Agent entrypoints\n\n- https://rolepatch.com/llms.txt\n- https://rolepatch.com/api/ai\n- https://rolepatch.com/index.md\n\nDashboard routes require auth and are not agent-indexed.\n\n## Product links\n\n- Home: https://rolepatch.com/ — Product landing\n- Pricing: https://rolepatch.com/pricing — Plans and limits\n- Tools: https://rolepatch.com/tools — Public tools\n\n## Machine surfaces\n\n- https://rolepatch.com/llms.txt\n- https://rolepatch.com/llms-full.txt\n- https://rolepatch.com/api/ai\n- https://rolepatch.com/index.md\n- https://rolepatch.com/sitemap.xml\n- https://rolepatch.com/robots.txt\n\n## Contact\n\n- Owner: https://sarthakagrawal.dev\n- Agent email for directory verification: sarthakagrawal@agentmail.to\n",
-  "llmsTxt": "# RolePatch\n\n> AI-powered resume tailoring. Score fit against a job description, rewrite bullets for the role, and prep interviews.\n\n## Product\n\n- [Home](https://rolepatch.com/): Product landing\n- [Pricing](https://rolepatch.com/pricing): Plans and limits\n- [Tools](https://rolepatch.com/tools): Public tools\n\n## Machine surfaces\n\n- [Agent catalog](https://rolepatch.com/api/ai): JSON inventory of public surfaces\n- [Homepage markdown](https://rolepatch.com/index.md): Product brief without JS\n- [This index](https://rolepatch.com/llms.txt)\n",
+  "llmsTxt": "# RolePatch\n\n> AI-powered resume tailoring. Score fit against a job description, rewrite bullets for the role, and prep interviews.\n\n## Product\n\n- [Home](https://rolepatch.com/): Product landing\n- [Pricing](https://rolepatch.com/pricing): Plans and limits\n- [Tools](https://rolepatch.com/tools): Public tools\n\n## When to use this\n\n- Tailoring a resume to a specific job description before applying\n- Scoring fit between a resume and a job posting to prioritize applications\n- Generating role-specific cover letters and STAR interview prep stories\n- Discovering public tools for job seekers (fit scoring, resume analysis)\n\n## Machine surfaces\n\n- [Agent catalog](https://rolepatch.com/api/ai): JSON inventory of public surfaces\n- [OpenAPI spec](https://rolepatch.com/openapi.json): Machine-readable API description\n- [Homepage markdown](https://rolepatch.com/index.md): Product brief without JS\n- [This index](https://rolepatch.com/llms.txt)\n",
   "indexMd": "# RolePatch\n\nAI-powered resume tailoring and job-application assistant.\n\n## What it is\n\n- Score resume fit against a job description\n- Rewrite bullets for the role\n- Cover letters, company research, STAR prep\n\n## Who it's for\n\nJob seekers who want reviewed, role-specific application materials — not generic AI fluff.\n\n## Agent entrypoints\n\n- https://rolepatch.com/llms.txt\n- https://rolepatch.com/api/ai\n- https://rolepatch.com/index.md\n\nDashboard routes require auth and are not agent-indexed.\n",
   "catalog": {
     "name": "RolePatch",
@@ -24,6 +24,7 @@ const AGENT_SURFACE = {
     "llmsFull": "https://rolepatch.com/llms-full.txt",
     "sitemap": "https://rolepatch.com/sitemap.xml",
     "robots": "https://rolepatch.com/robots.txt",
+    "openapi": "https://rolepatch.com/openapi.json",
     "markdown": {
       "suffix": ".md",
       "negotiation": true
@@ -58,6 +59,136 @@ const AGENT_SURFACE = {
   }
 };
 
+const OPENAPI_SPEC = {
+  openapi: '3.1.0',
+  info: {
+    title: 'RolePatch public API',
+    version: '1.0.0',
+    description:
+      'RolePatch is an AI-powered resume tailoring and job-application assistant. The public web API exposes read-only agent surfaces: the agent catalog, llms.txt, sitemap, and markdown alternates.',
+    contact: { name: 'RolePatch', url: 'https://rolepatch.com' },
+  },
+  servers: [{ url: 'https://rolepatch.com' }],
+  tags: [{ name: 'agent-surfaces', description: 'Machine-readable public surfaces' }],
+  paths: {
+    '/api/ai': {
+      get: {
+        operationId: 'getAgentCatalog',
+        tags: ['agent-surfaces'],
+        summary: 'Agent catalog',
+        description:
+          'JSON inventory of public agent surfaces: llms.txt, llms-full.txt, sitemap, robots, and per-page markdown alternates.',
+        responses: {
+          200: {
+            description: 'Agent catalog',
+            content: {
+              'application/json': { schema: { $ref: '#/components/schemas/AgentCatalog' } },
+            },
+          },
+        },
+      },
+    },
+    '/llms.txt': {
+      get: {
+        operationId: 'getLlmsTxt',
+        tags: ['agent-surfaces'],
+        summary: 'llms.txt index',
+        description: 'Compact agent index following the llms.txt convention.',
+        responses: { 200: { description: 'Markdown index', content: { 'text/plain': {} } } },
+      },
+    },
+    '/llms-full.txt': {
+      get: {
+        operationId: 'getLlmsFullTxt',
+        tags: ['agent-surfaces'],
+        summary: 'Full agent brief',
+        description:
+          'Full canonical agent brief with product, architecture, and surface inventory.',
+        responses: { 200: { description: 'Markdown brief', content: { 'text/plain': {} } } },
+      },
+    },
+    '/sitemap.xml': {
+      get: {
+        operationId: 'getSitemap',
+        tags: ['agent-surfaces'],
+        summary: 'Sitemap',
+        responses: { 200: { description: 'XML sitemap', content: { 'application/xml': {} } } },
+      },
+    },
+    '/openapi.json': {
+      get: {
+        operationId: 'getOpenApiSpec',
+        tags: ['agent-surfaces'],
+        summary: 'OpenAPI specification',
+        description: 'This document.',
+        responses: {
+          200: { description: 'OpenAPI 3.1 spec', content: { 'application/json': {} } },
+        },
+      },
+    },
+  },
+  components: {
+    schemas: {
+      AgentCatalog: {
+        type: 'object',
+        properties: {
+          name: { type: 'string' },
+          version: { type: 'string' },
+          url: { type: 'string', format: 'uri' },
+          llms: { type: 'string', format: 'uri' },
+          llmsFull: { type: 'string', format: 'uri' },
+          sitemap: { type: 'string', format: 'uri' },
+          robots: { type: 'string', format: 'uri' },
+          openapi: { type: 'string', format: 'uri' },
+          markdown: {
+            type: 'object',
+            properties: {
+              suffix: { type: 'string' },
+              negotiation: { type: 'boolean' },
+            },
+          },
+          surfaces: {
+            type: 'array',
+            items: {
+              type: 'object',
+              properties: {
+                id: { type: 'string' },
+                url: { type: 'string', format: 'uri' },
+                md: { type: 'string', format: 'uri', nullable: true },
+                kind: { type: 'string' },
+                description: { type: 'string' },
+              },
+            },
+          },
+        },
+      },
+    },
+  },
+};
+
+function markdown404(pathname, origin) {
+  const body = `# 404 — Not Found
+
+\`${pathname}\` does not exist on ${origin}.
+
+## Where to look next
+
+- [Home](${origin}/)
+- [Sitemap](${origin}/sitemap.xml)
+- [Agent index](${origin}/llms.txt)
+- [Full agent brief](${origin}/llms-full.txt)
+- [Agent catalog (JSON)](${origin}/api/ai)
+`;
+  return new Response(body, {
+    status: 404,
+    headers: {
+      'content-type': 'text/markdown; charset=utf-8',
+      'cache-control': 'no-store',
+      'x-content-type-options': 'nosniff',
+    },
+  });
+}
+
 /**
  * @param {Request} request
  * @returns {Response | null}
@@ -67,6 +198,18 @@ export function handleAgentEdge(request) {
   const url = new URL(request.url);
   const path = url.pathname === '' ? '/' : url.pathname;
 
+  // /openapi.json — serve the spec directly.
+  if (path === '/openapi.json' || path === '/openapi.yaml') {
+    return new Response(JSON.stringify(OPENAPI_SPEC, null, 2), {
+      status: 200,
+      headers: {
+        'content-type': 'application/json; charset=utf-8',
+        'access-control-allow-origin': '*',
+        'cache-control': 'public, max-age=3600',
+      },
+    });
+  }
+
   if (path === '/llms.txt') {
     return text(AGENT_SURFACE.llmsTxt, 'text/plain; charset=utf-8');
   }
@@ -86,6 +229,7 @@ export function handleAgentEdge(request) {
       sitemap: AGENT_SURFACE.catalog.sitemap
         ? String(AGENT_SURFACE.catalog.sitemap).replace(AGENT_SURFACE.url, url.origin)
         : `${url.origin}/sitemap.xml`,
+      openapi: `${url.origin}/openapi.json`,
       surfaces: (AGENT_SURFACE.catalog.surfaces || []).map((s) => ({
         ...s,
         url: s.url ? String(s.url).replace(AGENT_SURFACE.url, url.origin) : s.url,
@@ -99,10 +243,16 @@ export function handleAgentEdge(request) {
   if ((path === '/' || path === '') && wantsMarkdown(request)) {
     return text(AGENT_SURFACE.indexMd, 'text/markdown; charset=utf-8', {
       Link: '</index.md>; rel="alternate"; type="text/markdown"',
-      Vary: 'Accept',
+      Vary: 'Accept, Accept-Encoding',
     });
   }
 
+  // Agent-friendly 404: return a markdown recovery body for unknown paths
+  // when the client asks for markdown.
+  if (wantsMarkdown(request) && !path.includes('.') && !path.startsWith('/api/')) {
+    return markdown404(path, url.origin);
+  }
+
   return null;
 }
 
diff --git a/next.config.ts b/next.config.ts
index c40af53..4dfcf45 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -16,7 +16,7 @@ const securityHeaders = [
       // unsafe-eval required by Next.js dev + some libs.
       // static.cloudflareinsights.com is the Cloudflare Web Analytics beacon
       // that Cloudflare injects automatically on the rolepatch.com zone.
-      "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://static.cloudflareinsights.com https://us-assets.i.posthog.com",
+      "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://static.cloudflareinsights.com https://us-assets.i.posthog.com https://www.clarity.ms",
       "style-src 'self' 'unsafe-inline'",
       "img-src 'self' data: https:",
       "font-src 'self'",
diff --git a/public/api-ai.json b/public/api-ai.json
index 97c92f8..fcbe7c1 100644
--- a/public/api-ai.json
+++ b/public/api-ai.json
@@ -6,6 +6,7 @@
   "llmsFull": "https://rolepatch.com/llms-full.txt",
   "sitemap": "https://rolepatch.com/sitemap.xml",
   "robots": "https://rolepatch.com/robots.txt",
+  "openapi": "https://rolepatch.com/openapi.json",
   "markdown": {
     "suffix": ".md",
     "negotiation": true
diff --git a/public/llms.txt b/public/llms.txt
index b8eaab3..2be3d2e 100644
--- a/public/llms.txt
+++ b/public/llms.txt
@@ -8,8 +8,16 @@
 - [Pricing](https://rolepatch.com/pricing): Plans and limits
 - [Tools](https://rolepatch.com/tools): Public tools
 
+## When to use this
+
+- Tailoring a resume to a specific job description before applying
+- Scoring fit between a resume and a job posting to prioritize applications
+- Generating role-specific cover letters and STAR interview prep stories
+- Discovering public tools for job seekers (fit scoring, resume analysis)
+
 ## Machine surfaces
 
 - [Agent catalog](https://rolepatch.com/api/ai): JSON inventory of public surfaces
+- [OpenAPI spec](https://rolepatch.com/openapi.json): Machine-readable API description
 - [Homepage markdown](https://rolepatch.com/index.md): Product brief without JS
 - [This index](https://rolepatch.com/llms.txt)
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index 76133d3..34f9cca 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -121,6 +121,12 @@ export default function RootLayout({
           }}
         />
         {/* fleet-jsonld:end */}
+        {/* Microsoft Clarity — session replay + heatmaps (additive; PostHog stays) */}
+        <script
+          dangerouslySetInnerHTML={{
+            __html: `(function(c,l,a,r,i,t,y){c[a]=c[a]||function(){(c[a].q=c[a].q||[]).push(arguments)};t=l.createElement(r);t.async=1;t.src="https://www.clarity.ms/tag/y6buz6rkot";y=l.getElementsByTagName(r)[0];y.parentNode.insertBefore(t,y);})(window,document,"clarity","script","y6buz6rkot");window.clarity("set","project_id","rolepatch");`,
+          }}
+        />
       </head>
       <body className={`${geistSans.variable} ${geistMono.variable} antialiased`}>
         <AnalyticsProvider>