diff --git a/src/cli/dispatch.test.ts b/src/cli/dispatch.test.ts
index 6a9c58506..7afd5320f 100644
--- a/src/cli/dispatch.test.ts
+++ b/src/cli/dispatch.test.ts
@@ -185,6 +185,16 @@ register({
   handler: async (args) => ({ id: (args as Record<string, unknown>).id, agent_group_id: 'g1' }),
 });
 
+// Echoes args back — used to assert dash-joined positional id resolution.
+register({
+  name: 'groups-get',
+  description: 'test command (groups get)',
+  resource: 'groups',
+  access: 'open',
+  parseArgs: (raw) => raw,
+  handler: async (args) => ({ echo: args }),
+});
+
 import { dispatch } from './dispatch.js';
 import type { CallerContext } from './frame.js';
 
@@ -584,3 +594,19 @@ describe('CLI scope enforcement', () => {
     }
   });
 });
+
+// --- Dash-joined positional id resolution (generated ids contain dashes) ---
+
+describe('dash-joined positional id resolution', () => {
+  it('resolves `groups-get-<uuid-with-dashes>` to (groups get, id=<uuid>)', async () => {
+    const uuid = '550e8400-e29b-41d4-a716-446655440000';
+
+    const resp = await dispatch({ id: '1', command: `groups-get-${uuid}`, args: {} }, { caller: 'host' });
+
+    expect(resp.ok).toBe(true);
+    if (resp.ok) {
+      const data = resp.data as { echo: Record<string, unknown> };
+      expect(data.echo.id).toBe(uuid);
+    }
+  });
+});
diff --git a/src/cli/dispatch.ts b/src/cli/dispatch.ts
index c35365272..f0dc430cb 100644
--- a/src/cli/dispatch.ts
+++ b/src/cli/dispatch.ts
@@ -26,19 +26,24 @@ export async function dispatch(
 ): Promise<ResponseFrame> {
   let cmd = lookup(req.command);
 
-  // Fallback: if the full command isn't registered, trim the last
-  // dash-segment and treat it as the target ID. This lets clients join
-  // all positional args with dashes (e.g. `ncl groups get abc123`
-  // → command "groups-get-abc123" → trim → "groups-get" + id "abc123").
+  // Fallback: if the full command isn't registered, split the dash-joined
+  // command and treat the longest registered prefix as the command, with the
+  // re-joined remainder as the target ID. Clients join all positional args
+  // with dashes (e.g. `ncl groups get abc123` → command "groups-get-abc123"),
+  // and generated ids (UUIDs, `sess-…`, `appr-…`) themselves contain dashes,
+  // so trimming a single trailing segment isn't enough — walk prefixes from
+  // longest to shortest so `groups-get-<uuid-with-dashes>` still resolves to
+  // "groups-get" + id "<uuid-with-dashes>".
   if (!cmd) {
-    const idx = req.command.lastIndexOf('-');
-    if (idx > 0) {
-      const shortened = req.command.slice(0, idx);
-      const tail = req.command.slice(idx + 1);
+    const parts = req.command.split('-');
+    for (let i = parts.length - 1; i > 0; i--) {
+      const shortened = parts.slice(0, i).join('-');
       const fallback = lookup(shortened);
       if (fallback) {
+        const tail = parts.slice(i).join('-');
         cmd = fallback;
         req = { ...req, command: shortened, args: { ...req.args, id: req.args.id ?? tail } };
+        break;
       }
     }
   }