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Use unique user_id per ADK agent to prevent session leakage #63

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Merged
richardkiene merged 1 commit into from
Jan 27, 2026
Merged

Use unique user_id per ADK agent to prevent session leakage #63

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6 changes: 5 additions & 1 deletion src/mcprobe/agents/adk.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

import importlib.util
import time
import uuid
from collections.abc import Callable
from pathlib import Path
from typing import TYPE_CHECKING, Any
Expand Down Expand Up @@ -44,7 +45,8 @@ def __init__(
session_service=self._session_service,
)
self._session_id: str | None = None
self._user_id = "mcprobe_user"
# Use unique user_id per instance to prevent any ADK-side caching/session leakage
self._user_id = f"mcprobe_{uuid.uuid4().hex[:8]}"

@property
def name(self) -> str:
Expand Down Expand Up @@ -175,6 +177,8 @@ async def reset(self) -> None:
from google.adk.sessions import InMemorySessionService # noqa: PLC0415

self._session_id = None
# Generate new user_id to prevent any ADK-side caching/session leakage
self._user_id = f"mcprobe_{uuid.uuid4().hex[:8]}"
# Create fresh session service
self._session_service = InMemorySessionService()
self._runner = Runner(
Expand Down