diff --git a/src/openhuman/memory/ops/tool_memory.rs b/src/openhuman/memory/ops/tool_memory.rs
index c68868a71..d3a6e5822 100644
--- a/src/openhuman/memory/ops/tool_memory.rs
+++ b/src/openhuman/memory/ops/tool_memory.rs
@@ -175,6 +175,8 @@ pub async fn tool_rules_json(params: ToolRuleListParams) -> Result<RpcOutcome<Va
 
 #[cfg(test)]
 mod tests {
+    use std::sync::atomic::{AtomicUsize, Ordering};
+
     use super::*;
     use crate::openhuman::memory_tools::ToolMemoryPriority;
 
@@ -183,8 +185,9 @@ mod tests {
     }
 
     fn unique_tool_name() -> String {
-        let short = &uuid::Uuid::new_v4().as_simple().to_string()[..12];
-        format!("toolmem{short}")
+        static NEXT_TOOL_ID: AtomicUsize = AtomicUsize::new(1);
+        let id = NEXT_TOOL_ID.fetch_add(1, Ordering::Relaxed);
+        format!("toolmem_test_{id}")
     }
 
     #[tokio::test]