Add get_current_time tool and TIMEZONE env variable

server.py

@@ -28,6 +28,7 @@ import email.policy
 import imaplib
 import smtplib
 import logging
+import pytz
 import threading
 import uuid
 from contextvars import ContextVar
@@ -156,6 +157,9 @@ class GlobalConfig:
     # Scheduling
     SCHEDULED_SEND_INTERVAL: int = int(os.getenv("SCHEDULED_SEND_INTERVAL", "10"))
 
+    # Timezone (used by get_current_time)
+    TIMEZONE: str = os.getenv("TIMEZONE", "UTC").strip() or "UTC"
+
     # HTML signature (optional)
     # Can be:
     # - Raw HTML string
@@ -1522,6 +1526,15 @@ TOOLS = [
             "required": []
         }
     },
+    {
+        "name": "get_current_time",
+        "description": "Return the current date and time in the configured timezone. Use this to understand relative dates like 'today', 'yesterday', or 'last week' when reviewing emails.",
+        "inputSchema": {
+            "type": "object",
+            "properties": {},
+            "required": []
+        }
+    },
 ]
 
 
@@ -1714,6 +1727,10 @@ def call_tool(name, args):
         logger.info(f"{prefix}call_tool get_triage_config")
         return get_triage_config_impl(args)
 
+    if name == "get_current_time":
+        logger.info(f"{prefix}call_tool get_current_time")
+        return get_current_time_impl(args)
+
     raise ValueError(f"Unknown tool: {name}")
 
 
@@ -2405,6 +2422,22 @@ def get_triage_config_impl(args):
     }
 
 
+def get_current_time_impl(args):
+    """
+    Return the current date and time in the configured timezone.
+    """
+    tz_name = config.TIMEZONE or "UTC"
+    try:
+        tz = pytz.timezone(tz_name)
+    except Exception:
+        tz = pytz.utc
+    now = datetime.now(tz)
+    return {
+        "iso": now.isoformat(),
+        "timezone": tz_name,
+    }
+
+
 # -------------------- FASTAPI / MCP ENDPOINT --------------------
 
 app = FastAPI(