diff --git a/apps/web/package.json b/apps/web/package.json
index 656c6aa..0b30f6a 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -34,6 +34,7 @@
     "zod": "^4.0.0"
   },
   "devDependencies": {
+    "@tailwindcss/typography": "^0.5.19",
     "@tpmjs/eslint-config": "workspace:*",
     "@tpmjs/tailwind-config": "workspace:*",
     "@tpmjs/tsconfig": "workspace:*",
diff --git a/apps/web/src/components/ToolPlayground.tsx b/apps/web/src/components/ToolPlayground.tsx
index 0cacc3b..62b740b 100644
--- a/apps/web/src/components/ToolPlayground.tsx
+++ b/apps/web/src/components/ToolPlayground.tsx
@@ -8,6 +8,8 @@
 import type { TokenBreakdown as TokenData } from '@/lib/ai-agent/tool-executor-agent';
 import type { Tool } from '@tpmjs/db';
 import { useState } from 'react';
+import ReactMarkdown from 'react-markdown';
+import remarkGfm from 'remark-gfm';
 import { TokenBreakdown } from './TokenBreakdown';
 
 interface ToolPlaygroundProps {
@@ -119,7 +121,8 @@ export function ToolPlayground({ tool }: ToolPlaygroundProps): React.ReactElemen
                   break;
 
                 case 'complete':
-                  setOutput(data.output);
+                  // Don't replace output - keep the streamed text
+                  // setOutput(data.output); // Removed: this was overwriting streamed content
                   setTokens(data.tokenBreakdown);
                   setLogs((prev) => [
                     ...prev,
@@ -208,6 +211,7 @@ export function ToolPlayground({ tool }: ToolPlaygroundProps): React.ReactElemen
           {tabs.map((tab) => (
             <button
               key={tab.id}
+              type="button"
               onClick={() => setActiveTab(tab.id)}
               className={`px-4 py-3 text-sm font-medium transition-colors relative ${
                 activeTab === tab.id
@@ -248,6 +252,7 @@ export function ToolPlayground({ tool }: ToolPlaygroundProps): React.ReactElemen
             </div>
 
             <button
+              type="button"
               onClick={handleExecute}
               disabled={isExecuting || !prompt.trim()}
               className="px-6 py-3 bg-primary text-primary-foreground rounded-lg font-medium hover:bg-primary/90 disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
@@ -292,10 +297,8 @@ export function ToolPlayground({ tool }: ToolPlaygroundProps): React.ReactElemen
                 <p className="text-sm text-red-600 dark:text-red-500 mt-1">{error}</p>
               </div>
             ) : output ? (
-              <div className="rounded-lg border border-border bg-muted/30 p-4">
-                <pre className="text-sm text-foreground whitespace-pre-wrap font-mono">
-                  {output}
-                </pre>
+              <div className="rounded-lg border border-border bg-muted/30 p-6 prose prose-sm dark:prose-invert max-w-none">
+                <ReactMarkdown remarkPlugins={[remarkGfm]}>{output}</ReactMarkdown>
               </div>
             ) : isExecuting ? (
               <div className="flex items-center justify-center py-12">
diff --git a/apps/web/tailwind.config.ts b/apps/web/tailwind.config.ts
index a4aea36..9e9217f 100644
--- a/apps/web/tailwind.config.ts
+++ b/apps/web/tailwind.config.ts
@@ -8,4 +8,5 @@ export default {
     './src/components/**/*.{ts,tsx}',
     '../../packages/ui/src/**/*.ts',
   ],
+  plugins: [...(baseConfig.plugins || []), require('@tailwindcss/typography')],
 } satisfies Config;
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 97787a3..ebed9af 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -105,6 +105,9 @@ importers:
         specifier: ^4.0.0
         version: 4.1.13
     devDependencies:
+      '@tailwindcss/typography':
+        specifier: ^0.5.19
+        version: 0.5.19(tailwindcss@3.4.18(tsx@4.20.6))
       '@tpmjs/eslint-config':
         specifier: workspace:*
         version: link:../../packages/config/eslint
@@ -1966,6 +1969,11 @@ packages:
   '@swc/helpers@0.5.15':
     resolution: {integrity: sha512-JQ5TuMi45Owi4/BIMAJBoSQoOJu12oOk/gADqlcUL9JEdHB8vyjUSsxqeNXnmXHjYKMi2WcYtezGEEhqUI/E2g==}
 
+  '@tailwindcss/typography@0.5.19':
+    resolution: {integrity: sha512-w31dd8HOx3k9vPtcQh5QHP9GwKcgbMp87j58qi6xgiBnFFtKEAgCWnDw4qUT8aHwkCp8bKvb/KGKWWHedP0AAg==}
+    peerDependencies:
+      tailwindcss: '>=3.0.0 || insiders || >=4.0.0-alpha.20 || >=4.0.0-beta.1'
+
   '@testing-library/dom@10.4.0':
     resolution: {integrity: sha512-pemlzrSESWbdAloYml3bAJMEfNh1Z7EduzqPKprCH5S341frlpYnUEW0H72dLxa6IsYr+mPno20GiSm+h9dEdQ==}
     engines: {node: '>=18'}
@@ -4200,6 +4208,10 @@ packages:
     peerDependencies:
       postcss: ^8.2.14
 
+  postcss-selector-parser@6.0.10:
+    resolution: {integrity: sha512-IQ7TZdoaqbT+LCpShg46jnZVlhWD2w6iQYAcYXfHARZ7X1t/UGhhceQDs5X0cGqKvYlHNOuv7Oa1xmb0oQuA3w==}
+    engines: {node: '>=4'}
+
   postcss-selector-parser@6.1.2:
     resolution: {integrity: sha512-Q8qQfPiZ+THO/3ZrOrO0cJJKfpYCagtMUkXbnEfmgUjwXg6z/WBeOyS9APBBPCTSiDV+s4SwQGu8yFsiMRIudg==}
     engines: {node: '>=4'}
@@ -6448,6 +6460,11 @@ snapshots:
     dependencies:
       tslib: 2.8.1
 
+  '@tailwindcss/typography@0.5.19(tailwindcss@3.4.18(tsx@4.20.6))':
+    dependencies:
+      postcss-selector-parser: 6.0.10
+      tailwindcss: 3.4.18(tsx@4.20.6)
+
   '@testing-library/dom@10.4.0':
     dependencies:
       '@babel/code-frame': 7.27.1
@@ -9349,6 +9366,11 @@ snapshots:
       postcss: 8.5.6
       postcss-selector-parser: 6.1.2
 
+  postcss-selector-parser@6.0.10:
+    dependencies:
+      cssesc: 3.0.0
+      util-deprecate: 1.0.2
+
   postcss-selector-parser@6.1.2:
     dependencies:
       cssesc: 3.0.0