diff --git a/main.py b/main.py
index 0796316..fc7b55d 100644
--- a/main.py
+++ b/main.py
@@ -4,6 +4,8 @@ import asyncio
 import os
 import logging
 import time
+import re
+from typing import Optional
 from contextlib import asynccontextmanager
 from fastapi import FastAPI, HTTPException, Request
 from playwright.async_api import async_playwright
@@ -60,7 +62,7 @@ async def log_request_time(request: Request, call_next):
     return response
 
 
-async def get_fingerprint():
+async def get_fingerprint(target_url: str = TARGET_PAGE):
     page = await browser.new_page()
     try:
         # [新增] 拦截无用资源，极大提升加载速度
@@ -114,7 +116,7 @@ async def get_fingerprint():
         page.on("request", handle_request)
         
         # [修改] 并发执行 goto 和 wait_for。拿到结果就立刻返回，不再死等 goto 结束
-        goto_task = asyncio.create_task(page.goto(TARGET_PAGE, wait_until="domcontentloaded"))
+        goto_task = asyncio.create_task(page.goto(target_url, wait_until="domcontentloaded"))
         
         fingerprint = await asyncio.wait_for(fingerprint_future, timeout=15)
         return fingerprint
@@ -138,10 +140,19 @@ async def health():
     return {"status": "healthy"}
 
 
+def replace_url_id(base_url, new_id):
+    return re.sub(r'id=\d+', f'id={new_id}', base_url)
+
+
 @app.get("/fingerprint")
-async def get_fingerprint_endpoint():
+async def get_fingerprint_endpoint(pppid: Optional[str] = None):
     try:
-        fingerprint = await get_fingerprint()
+        target_url = TARGET_PAGE
+        if pppid:
+            target_url = replace_url_id(TARGET_PAGE, pppid)
+            logger.info(f"Using custom id: {pppid}, target URL: {target_url}")
+        
+        fingerprint = await get_fingerprint(target_url)
         if fingerprint:
             return {
                 "status": "success",