diff --git a/apps/web/src/app/api/tools/[slug]/route.ts b/apps/web/src/app/api/tools/[...slug]/route.ts
similarity index 73%
rename from apps/web/src/app/api/tools/[slug]/route.ts
rename to apps/web/src/app/api/tools/[...slug]/route.ts
index 759cdea..964e639 100644
--- a/apps/web/src/app/api/tools/[slug]/route.ts
+++ b/apps/web/src/app/api/tools/[...slug]/route.ts
@@ -6,21 +6,25 @@ export const dynamic = 'force-dynamic';
 export const maxDuration = 60;
 
 /**
- * GET /api/tools/[slug]
+ * GET /api/tools/[...slug]
  *
  * Fetch a single tool by its NPM package name (slug)
+ * Supports catch-all routing for scoped packages like @tpmjs/text-transformer
  */
 export async function GET(
   _request: NextRequest,
-  { params }: { params: Promise<{ slug: string }> }
+  { params }: { params: Promise<{ slug: string[] }> }
 ): Promise<NextResponse> {
   try {
     const { slug } = await params;
 
+    // Join slug array to reconstruct package name (e.g., ['@tpmjs', 'text-transformer'] -> '@tpmjs/text-transformer')
+    const packageName = slug.join('/');
+
     // Find the tool by npmPackageName
     const tool = await prisma.tool.findUnique({
       where: {
-        npmPackageName: decodeURIComponent(slug),
+        npmPackageName: packageName,
       },
     });
 
diff --git a/apps/web/src/app/tool/[...slug]/page.tsx b/apps/web/src/app/tool/[...slug]/page.tsx
index 4bf5528..df763fb 100644
--- a/apps/web/src/app/tool/[...slug]/page.tsx
+++ b/apps/web/src/app/tool/[...slug]/page.tsx
@@ -89,7 +89,7 @@ export default function ToolDetailPage({
     const fetchTool = async () => {
       try {
         setLoading(true);
-        const response = await fetch(`/api/tools/${encodeURIComponent(slug)}`);
+        const response = await fetch(`/api/tools/${slug}`);
         const data = await response.json();
 
         if (data.success) {
diff --git a/packages/db/check-tool.js b/packages/db/check-tool.js
new file mode 100644
index 0000000..a358ce4
--- /dev/null
+++ b/packages/db/check-tool.js
@@ -0,0 +1,30 @@
+const { PrismaClient } = require('@prisma/client');
+const prisma = new PrismaClient();
+
+async function main() {
+  const tool = await prisma.tool.findUnique({
+    where: { npmPackageName: '@tpmjs/text-transformer' },
+    select: {
+      npmPackageName: true,
+      npmVersion: true,
+      npmReadme: true,
+    },
+  });
+
+  if (tool) {
+    console.log('Tool found:', tool.npmPackageName, tool.npmVersion);
+    console.log('Has README:', tool.npmReadme ? `Yes (${tool.npmReadme.length} chars)` : 'No');
+  } else {
+    console.log('Tool @tpmjs/text-transformer not found in database');
+
+    // List all tools to see what's available
+    const allTools = await prisma.tool.findMany({
+      select: { npmPackageName: true },
+      take: 10,
+    });
+    console.log('\nAvailable tools:');
+    allTools.forEach((t) => console.log(' -', t.npmPackageName));
+  }
+}
+
+main().finally(() => prisma.$disconnect());
diff --git a/packages/db/check-tool.mjs b/packages/db/check-tool.mjs
new file mode 100644
index 0000000..4fd8e43
--- /dev/null
+++ b/packages/db/check-tool.mjs
@@ -0,0 +1,30 @@
+import { PrismaClient } from '@prisma/client';
+const prisma = new PrismaClient();
+
+async function main() {
+  const tool = await prisma.tool.findUnique({
+    where: { npmPackageName: '@tpmjs/text-transformer' },
+    select: {
+      npmPackageName: true,
+      npmVersion: true,
+      npmReadme: true,
+    }
+  });
+  
+  if (tool) {
+    console.log('Tool found:', tool.npmPackageName, tool.npmVersion);
+    console.log('Has README:', tool.npmReadme ? `Yes (${tool.npmReadme.length} chars)` : 'No');
+  } else {
+    console.log('Tool @tpmjs/text-transformer not found in database');
+    
+    // List all tools to see what's available
+    const allTools = await prisma.tool.findMany({
+      select: { npmPackageName: true },
+      take: 10
+    });
+    console.log('\nAvailable tools:');
+    allTools.forEach(t => console.log(' -', t.npmPackageName));
+  }
+}
+
+main().finally(() => prisma.$disconnect());