{
  "id": 3801289,
  "title": "Give Your Mem0 Agent Session-Scoped Memory in 15 Minutes (One Filter You're Probably Skipping)",
  "url": "https://urgent.news/2026/08/27/give-your-mem0-agent-session-scoped-memory-in-15-minutes-one-filter",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-27T19:11:49.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/mukesh_13/give-your-mem0-agent-session-scoped-memory-in-15-minutes-one-filter-youre-probably-skipping-5139"
  },
  "original_language": "en",
  "account": "When you add a memory using Mem0, it works fine in your dev environment, but issues arise when you move to a multi-tenant setup with real users and sessions. The most common bug is that the agent remembers information it was never given, because the information belongs to another user. This happens due to inconsistent filtering across the read and write paths. To fix this, always pass the same scoping identity (user_id, agent_id, and run_id) in every search() call as you do in the add() call that created the memory. Additionally, consider using more advanced filtering options to further refine the results based on metadata attached at write time.",
  "summary": "You add memory to your agent with Mem0, ship it, and it works great in your dev environment where you're the only user. Then you go multi-tenant — real users, real sessions — and three weeks later someone reports that the agent \"remembers\" something they never told it. It's not a hallucination. It's another user's memory, served straight from your own vector store. This is the single most common…",
  "key_points": [
    "Ensure consistent scoping identity across read and write paths",
    "Use same userid, agentid, and runid in every search() call",
    "Apply advanced filtering options to refine memory results"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}