mem0ai/mem0 · error · HTTPException

At least one identifier is required.

Error message

At least one identifier is required.

What it means

Error "At least one identifier is required." thrown in mem0ai/mem0.

Source

Thrown at server/main.py:536

    try:
        get_memory_instance().delete(memory_id=memory_id)
        return MessageResponse(message="Memory deleted successfully")
    except (ValueError, Mem0ValidationError) as e:
        raise _client_error(e)
    except Exception:
        raise upstream_error()


@app.delete("/memories", summary="Delete all memories", response_model=MessageResponse)
def delete_all_memories(
    user_id: Optional[str] = None,
    run_id: Optional[str] = None,
    agent_id: Optional[str] = None,
    _auth=Depends(require_admin),
):
    """Delete all memories for a given identifier. Requires admin role."""
    if not any([user_id, run_id, agent_id]):
        raise HTTPException(status_code=400, detail="At least one identifier is required.")
    try:
        params = {
            k: v for k, v in {"user_id": user_id, "run_id": run_id, "agent_id": agent_id}.items() if v
        }
        get_memory_instance().delete_all(**params)
        return MessageResponse(message="All relevant memories deleted")
    except Exception:
        raise upstream_error()


@app.post("/reset", summary="Reset all memories")
def reset_memory(_auth=Depends(require_admin)):
    """Completely reset stored memories. Requires admin role."""
    try:
        get_memory_instance().reset()
        return {"message": "All memories reset"}
    except Exception:
        raise upstream_error()

View on GitHub (pinned to 001c235229)

Solutions

1. Pass at least one identifier (user_id, agent_id, or run_id) in the request.

When it happens

Trigger: Thrown at server/main.py:536 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of mem0ai/mem0@001c235229 (2026-08-15). Data as JSON: /api/errors/2c7c113172c27c5c. Report an issue: GitHub.