diff --git a/apps/web/src/app/api/tools/execute/[...slug]/route.ts b/apps/web/src/app/api/tools/execute/[...slug]/route.ts
index a9e54d0..2cc2632 100644
--- a/apps/web/src/app/api/tools/execute/[...slug]/route.ts
+++ b/apps/web/src/app/api/tools/execute/[...slug]/route.ts
@@ -3,7 +3,6 @@
  * Executes TPMJS tools with AI agents and streams real-time progress
  */
 
-import { executeToolWithAgent } from '@/lib/ai-agent/tool-executor-agent';
 import { checkRateLimit, getClientIP } from '@/lib/rate-limiter';
 import { prisma } from '@tpmjs/db';
 import { type NextRequest, NextResponse } from 'next/server';
@@ -100,6 +99,9 @@ export async function POST(
         try {
           const startTime = Date.now();
 
+          // Dynamically import AI agent to avoid loading tiktoken at build time
+          const { executeToolWithAgent } = await import('@/lib/ai-agent/tool-executor-agent');
+
           // Execute tool with AI agent
           const result = await executeToolWithAgent(
             tool,