diff --git a/server_py/requirements.txt b/server_py/requirements.txt
index 43a9c35..c1c2674 100644
--- a/server_py/requirements.txt
+++ b/server_py/requirements.txt
@@ -2,3 +2,4 @@ Flask>=3.0.0
 flask-cors>=4.0.0
 requests>=2.31.0
 pysha3>=1.0.5
+web3>=7.11.0
diff --git a/server_py/server/__pycache__/chain.cpython-312.pyc b/server_py/server/__pycache__/chain.cpython-312.pyc
index 453fa35..ddc2300 100644
Binary files a/server_py/server/__pycache__/chain.cpython-312.pyc and b/server_py/server/__pycache__/chain.cpython-312.pyc differ
diff --git a/server_py/server/chain.py b/server_py/server/chain.py
index 7eaa28a..f624e8a 100644
--- a/server_py/server/chain.py
+++ b/server_py/server/chain.py
@@ -1,102 +1,85 @@
-# chain.py
+# chain.py  —— 直接覆盖此文件
 import os
-import json
 import re
-import requests
+import json
+from decimal import Decimal, getcontext
+
+getcontext().prec = 78  # 大整数/小数精度
 
-# 优先使用 web3 的 ABI 调用；不可用时再走原始 eth_call
-_USE_WEB3 = True
+# 尝试引入 web3；没有则置为不可用
 try:
     from web3 import Web3
+    _USE_WEB3 = True
 except Exception:
     _USE_WEB3 = False
 
+# ---------- 工具 ----------
 
 def _clean_addr(addr: str) -> str:
-    if not isinstance(addr, str):
-        return ""
-    addr = addr.strip()
-    if not re.fullmatch(r"0x[0-9a-fA-F]{40}", addr or ""):
-        return ""
-    return addr
-
-
-def _is_active_via_web3(rpc: str, contract_addr: str, address: str) -> bool:
+    if isinstance(addr, str) and re.fullmatch(r"0x[0-9a-fA-F]{40}", addr or ""):
+        return addr
+    return ""
+
+_ABI_CACHE = None
+def _load_abi():
+    """读取并缓存同目录下 StakePass.abi.json"""
+    global _ABI_CACHE
+    if _ABI_CACHE is None:
+        abi_path = os.path.join(os.path.dirname(__file__), "StakePass.abi.json")
+        with open(abi_path, "r", encoding="utf-8") as f:
+            _ABI_CACHE = json.load(f)
+    return _ABI_CACHE
+
+def _get_contract():
+    """返回 (w3, contract) 或 (None, None)"""
+    if not _USE_WEB3:
+        return None, None
+    rpc = os.getenv("RPC") or ""
+    contract_addr = _clean_addr(os.getenv("CONTRACT", ""))
+    if not rpc or not contract_addr:
+        return None, None
     w3 = Web3(Web3.HTTPProvider(rpc, request_kwargs={"timeout": 30}))
-    # checksum 地址（等价于 ethers 的处理）
-    caddr = Web3.to_checksum_address(contract_addr)
-    aaddr = Web3.to_checksum_address(address)
-
-    # 读取同目录 ABI（与 Node 版一致）
-    abi_path = os.path.join(os.path.dirname(__file__), "StakePass.abi.json")
-    with open(abi_path, "r", encoding="utf-8") as f:
-        abi = json.load(f)
-
-    contract = w3.eth.contract(address=caddr, abi=abi)
-    try:
-        return bool(contract.functions.isActive(aaddr).call())
-    except Exception as e:
-        print("[isActive web3 error]", e)
-        return False
+    contract = w3.eth.contract(address=Web3.to_checksum_address(contract_addr), abi=_load_abi())
+    return w3, contract
 
+# ---------- 业务函数 ----------
 
-# 原始 eth_call 作为兜底（尽量不走它）
-def _keccak_selector(signature: str) -> str:
-    try:
-        import sha3  # pysha3
-        return sha3.keccak_256(signature.encode()).digest()[:4].hex()
-    except Exception:
-        # isActive(address) 的选择器常量
-        return "3c610c22"
+def stake_amount(address: str) -> dict:
+    """
+    返回当前地址的质押总额（基于 balanceOf(address)）：
+    { "raw": "uint256", "unit": "uint256", "formatted": "字符串小数" }
+    """
+    address = _clean_addr(address)
+    if not address:
+        return {"raw": "0", "unit": "1", "formatted": "0"}
 
+    w3, c = _get_contract()
+    if not c:
+        # web3 不可用或环境变量缺失
+        return {"raw": "0", "unit": "1", "formatted": "0"}
 
-def _is_active_via_eth_call(rpc: str, contract_addr: str, address: str) -> bool:
-    selector = _keccak_selector("isActive(address)")
-    # address 是静态类型，20 字节，左填充到 32 字节
-    data = "0x" + selector + address[2:].rjust(64, "0")
+    a = Web3.to_checksum_address(address)
+    amt = int(c.functions.balanceOf(a).call())
 
+    # 读取单位：优先 unit()，其次 UNIT()，最后兜底 1e18
     try:
-        r = requests.post(
-            rpc,
-            json={
-                "jsonrpc": "2.0",
-                "method": "eth_call",
-                "params": [{"to": contract_addr, "data": data}, "latest"],
-                "id": 1,
-            },
-            timeout=30,
-        )
-        r.raise_for_status()
-        result = r.json().get("result")
-        # 部分节点在异常/找不到函数时可能返回 "0x" 或空，这里统一按 False
-        if not isinstance(result, str) or not result.startswith("0x") or len(result) < 3:
-            return False
-        # bool 编码为 32 字节，非零即 True
-        return int(result, 16) != 0
-    except Exception as e:
-        print("[isActive eth_call error]", getattr(e, "response", None) or e)
-        return False
+        unit = int(c.functions.unit().call())
+    except Exception:
+        try:
+            unit = int(c.functions.UNIT().call())
+        except Exception:
+            unit = 10 ** 18
 
+    formatted = str(Decimal(amt) / Decimal(unit)) if unit else str(amt)
+    return {"raw": str(amt), "unit": str(unit), "formatted": formatted}
 
 def isActive(address: str) -> bool:
-    address = _clean_addr(address)
-    rpc = os.getenv("RPC") or ""
-    contract_addr = _clean_addr(os.getenv("CONTRACT", ""))
-
-    if not address or not rpc or not contract_addr:
+    """
+    是否解锁：balanceOf(address) >= unit
+    与合约 StakePassFixed::isActive 等价
+    """
+    info = stake_amount(address)
+    try:
+        return int(info["raw"]) >= int(info["unit"])
+    except Exception:
         return False
-
-    # DEBUG：需要时打印原始调用信息
-    if os.getenv("DEBUG_CHAIN") == "1":
-        print("[DEBUG_CHAIN] rpc:", rpc)
-        print("[DEBUG_CHAIN] contract:", contract_addr)
-        print("[DEBUG_CHAIN] address:", address)
-
-    if _USE_WEB3:
-        ok = _is_active_via_web3(rpc, contract_addr, address)
-        if ok:
-            return True
-        # web3 路径失败时尝试一次 eth_call 兜底
-        return _is_active_via_eth_call(rpc, contract_addr, address)
-    else:
-        return _is_active_via_eth_call(rpc, contract_addr, address)
diff --git a/server_py/server/index.py b/server_py/server/index.py
index 0216f71..b1b2a9e 100644
--- a/server_py/server/index.py
+++ b/server_py/server/index.py
@@ -13,6 +13,10 @@
 from chain import isActive
 from aiProxy import callAI
 
+from chain import isActive, stake_amount
+
+
+
 # === DB ===
 from db import db_session, engine
 from models import init_db, Topic, Message, now_utc
@@ -69,8 +73,17 @@ def access_status():
         return jsonify({"ok": False, "msg": "address required"}), 400
     active = isActive(address)
     used = _daily_usage.get(f"{dayKey()}:{address}", 0)
-    daily_limit = int(os.getenv("DAILY_TOKENS", "20000"))
-    return jsonify({"ok": True, "data": {"active": active, "used": used, "daily_limit": daily_limit}})
+    stake_amounts = stake_amount(address)
+    use_number = float(stake_amounts["formatted"]) * 10000 # 使用的数量
+    return jsonify({"ok": True, "data": {"active": active, "used": used, "daily_limit": use_number}})
+
+@app.get("/stake/amount")
+def read_stake_amount():
+    addr = (request.args.get("address") or request.headers.get("x-address") or "").strip()
+    if not addr:
+        return jsonify({"ok": False, "msg": "address required"}), 400
+    return jsonify({"ok": True, "data": stake_amount(addr)})
+
 
 # ===== 主题：创建 / 列表 / 重命名 / 归档 =====