diff --git a/src/local-model/connect.ts b/src/local-model/connect.ts
index 0af1fb12..d6d8e87b 100644
--- a/src/local-model/connect.ts
+++ b/src/local-model/connect.ts
@@ -263,16 +263,30 @@ export async function isManagedLocalEndpoint(id: string): Promise<boolean> {
 }
 
 /**
- * The names of the live sessions that use the endpoint `endpointId`, in the order given.
- * Pure. What `DELETE /api/local-model` answers its 409 with.
+ * What a session is called where a person reads it. A session an agent started (a worker of
+ * the codeman skill, `codeman agent spawn`) has no name of its own, and its tab then shows
+ * the last folder of its working directory, else the first eight characters of its id
+ * (`getSessionName()` in app.js). The same steps here, so that a sentence which lists
+ * sessions never lists an empty name. Pure.
+ */
+export function sessionLabel(session: { id?: string; name?: string; workingDir?: string }): string {
+  const name = (session.name ?? '').trim();
+  if (name) return name;
+  const folder = (session.workingDir ?? '').split('/').filter(Boolean).pop();
+  return folder || (session.id ?? '').slice(0, 8);
+}
+
+/**
+ * The live sessions that use the endpoint `endpointId`, in the order given, each by the name
+ * its tab shows (`sessionLabel()`). Pure. What the feature answers a 409 `sessions-open` with.
  */
 export function sessionNamesUsingEndpoint(
-  sessions: Iterable<{ name: string; customModel?: { endpointId: string } }>,
+  sessions: Iterable<{ id?: string; name: string; workingDir?: string; customModel?: { endpointId: string } }>,
   endpointId: string = LOCAL_MODEL_ENDPOINT_ID
 ): string[] {
   const names: string[] = [];
   for (const session of sessions) {
-    if (session.customModel?.endpointId === endpointId) names.push(session.name);
+    if (session.customModel?.endpointId === endpointId) names.push(sessionLabel(session));
   }
   return names;
 }
diff --git a/test/local-model-connect.test.ts b/test/local-model-connect.test.ts
index 3630baf6..41d43e6f 100644
--- a/test/local-model-connect.test.ts
+++ b/test/local-model-connect.test.ts
@@ -375,6 +375,30 @@ describe('sessionNamesUsingEndpoint', () => {
     expect(sessionNamesUsingEndpoint(new Set(sessions), 'office-gpu')).toEqual(['w3-lib']);
     expect(sessionNamesUsingEndpoint(new Map().values())).toEqual([]);
   });
+
+  // Seen on a Mac: a worker the codeman skill started has no name, and the refusal read
+  // "Sessions are still using this model: . Close them first."
+  it('names a session without a name the way its tab does: the folder, else the short id', () => {
+    const ours = { endpointId: 'local-ollama' };
+    expect(
+      sessionNamesUsingEndpoint([
+        {
+          id: '7dbd7b0d-0000-4000-8000-000000000001',
+          name: '',
+          workingDir: '/Users/x/codeman-cases/summaries',
+          customModel: ours,
+        },
+        {
+          id: 'a030dddb-0000-4000-8000-000000000002',
+          name: '   ',
+          workingDir: '/Users/x/codeman-cases/review/',
+          customModel: ours,
+        },
+        { id: 'c1d2e3f4-0000-4000-8000-000000000003', name: '', workingDir: '', customModel: ours },
+        { id: 'ffffffff-0000-4000-8000-000000000004', name: 'w1-app', workingDir: '/Users/x/app', customModel: ours },
+      ])
+    ).toEqual(['summaries', 'review', 'c1d2e3f4', 'w1-app']);
+  });
 });
 
 describe('compareModelDigest', () => {