diff --git a/src/mcp/server.ts b/src/mcp/server.ts
index 60b6c93..cae00af 100644
--- a/src/mcp/server.ts
+++ b/src/mcp/server.ts
@@ -73,10 +73,11 @@ function listWorktrees(): object {
     const idx = i + 1;
     const project = composeProjectName(ctx.repoName, idx, wt.branch);
     const allocations = allocateWorktreePorts(ctx.portMappings, idx);
-    const up =
-      execSafe(`docker compose -p "${project}" ps --format json`, {
-        cwd: wt.path,
-      }) !== null;
+    const psOutput = execSafe(
+      `docker compose -p "${project}" ps --format json`,
+      { cwd: wt.path },
+    );
+    const up = psOutput !== null && psOutput.length > 2;
 
     return {
       index: idx,