diff --git a/src/cli/crud.ts b/src/cli/crud.ts
index 18b52793b..e8a86acb9 100644
--- a/src/cli/crud.ts
+++ b/src/cli/crud.ts
@@ -71,6 +71,15 @@ export interface ResourceDef {
   };
   /** Non-standard verbs (grant, revoke, add, remove, restart, etc.). */
   customOperations?: Record<string, CustomOperation>;
+  /**
+   * Runs after a successful `create` INSERT, with the row that was just
+   * written. Used to wire in side effects that the central row alone
+   * doesn't trigger — e.g. creating a `container_configs` row when a new
+   * agent group is added, or the companion `agent_destinations` row when a
+   * wiring is added. The hook receives the same `values` object that was
+   * inserted, so generated fields like `id` and `created_at` are populated.
+   */
+  postCreate?: (row: Record<string, unknown>) => Promise<void> | void;
 }
 
 // ---------------------------------------------------------------------------
@@ -162,6 +171,7 @@ function genericCreate(def: ResourceDef) {
     getDb()
       .prepare(`INSERT INTO ${def.table} (${colNames.join(', ')}) VALUES (${placeholders.join(', ')})`)
       .run(values);
+    if (def.postCreate) await def.postCreate(values);
     return values;
   };
 }
diff --git a/src/cli/resources/groups.ts b/src/cli/resources/groups.ts
index 27da6417f..3a64b2642 100644
--- a/src/cli/resources/groups.ts
+++ b/src/cli/resources/groups.ts
@@ -12,6 +12,7 @@ import {
   updateContainerConfigScalars,
   updateContainerConfigJson,
 } from '../../db/container-configs.js';
+import { initGroupFilesystem } from '../../group-init.js';
 import { createAgentFromTemplate } from '../../templates/create-agent.js';
 import type { AgentGroup, ContainerConfigRow } from '../../types.js';
 import { registerResource } from '../crud.js';
@@ -90,6 +91,15 @@ registerResource({
           created_at: new Date().toISOString(),
         };
         createAgentGroup(group);
+        // Provision the workspace folder and the `container_configs` row that
+        // `getContainerConfig` and the spawn path require. Without this, a
+        // group created via `ncl groups create` would throw "Container config
+        // not found" on first spawn and stay broken until the host restart
+        // backfill ran (#2415). The template branch above provisions its own
+        // config + folder in `createAgentFromTemplate`; this covers the bare
+        // path. Mirrors what `setup/register.ts` does after creating an agent
+        // group via the setup flow.
+        initGroupFilesystem(group);
         return group;
       },
     },
diff --git a/src/cli/resources/wirings.ts b/src/cli/resources/wirings.ts
index d52f8b152..c7de00e5d 100644
--- a/src/cli/resources/wirings.ts
+++ b/src/cli/resources/wirings.ts
@@ -1,3 +1,5 @@
+import { ensureAgentDestinationForWiring } from '../../db/messaging-groups.js';
+import type { MessagingGroupAgent } from '../../types.js';
 import { registerResource } from '../crud.js';
 
 registerResource({
@@ -67,4 +69,13 @@ registerResource({
     { name: 'created_at', type: 'string', description: 'Auto-set.', generated: true },
   ],
   operations: { list: 'open', get: 'open', create: 'approval', update: 'approval', delete: 'approval' },
+  postCreate: (row) => {
+    // Create the companion `agent_destinations` row so the agent has a
+    // local name it can address this chat by. Without this, the agent
+    // generates a response, but delivery's ACL drops the outbound message
+    // (no destination matches the target) and the reply is silently lost.
+    // `createMessagingGroupAgent` does this automatically; the generic
+    // CRUD path doesn't, hence this hook. See issue #2389.
+    ensureAgentDestinationForWiring(row as unknown as MessagingGroupAgent);
+  },
 });
diff --git a/src/db/messaging-groups.ts b/src/db/messaging-groups.ts
index 93aace0a2..a728f8683 100644
--- a/src/db/messaging-groups.ts
+++ b/src/db/messaging-groups.ts
@@ -183,26 +183,37 @@ export function createMessagingGroupAgent(mga: MessagingGroupAgent): void {
     )
     .run(mga);
 
-  // Auto-create an agent_destinations row so delivery's ACL doesn't block
-  // outbound messages that target this chat. Guarded: when the agent-to-agent
-  // module isn't installed the table doesn't exist — skip silently. Without
-  // the module, the ACL check in delivery is also skipped (same guard), so
-  // channel sends still work.
-  //
-  // ⚠️  DESTINATION PROJECTION NOTE: this function only writes the central
-  // `agent_destinations` row. It does NOT project into any running
-  // agent's session inbound.db (see top-of-file invariant in
-  // src/modules/agent-to-agent/db/agent-destinations.ts). In practice this
-  // is fine because the only real callers are one-shot setup scripts
-  // (setup/register.ts, scripts/init-first-agent.ts, /manage-channels
-  // skill) that run in a separate process from the host. Any already-
-  // running container for `mga.agent_group_id` will keep serving the
-  // stale projection until its next wake (idle timeout or next inbound
-  // message) at which point spawnContainer's writeDestinations call
-  // refreshes from central. If you call this from code that runs INSIDE
-  // the host process and need the refresh to happen immediately,
-  // explicitly call the module's `writeDestinations(mga.agent_group_id,
-  // <sessionId>)` afterwards.
+  ensureAgentDestinationForWiring(mga);
+}
+
+/**
+ * Create the `agent_destinations` row that lets the agent address this chat
+ * as a delivery target. Idempotent — no-op when the destination already
+ * exists, the agent-to-agent module isn't installed, or the messaging group
+ * has been deleted out from under the wiring.
+ *
+ * Split out from `createMessagingGroupAgent` so callers that already wrote
+ * the `messaging_group_agents` row directly (e.g. the generic ncl CRUD path)
+ * can still get the companion destination without re-inserting the wiring.
+ *
+ * ⚠️  DESTINATION PROJECTION NOTE: this function only writes the central
+ * `agent_destinations` row. It does NOT project into any running agent's
+ * session inbound.db (see top-of-file invariant in
+ * src/modules/agent-to-agent/db/agent-destinations.ts). In practice this is
+ * fine because the only real callers are one-shot setup paths
+ * (setup/register.ts, scripts/init-first-agent.ts, /manage-channels skill,
+ * ncl wirings create) that run in a separate process from the host. Any
+ * already-running container for `mga.agent_group_id` will keep serving the
+ * stale projection until its next wake (idle timeout or next inbound
+ * message) at which point spawnContainer's writeDestinations call refreshes
+ * from central. If you call this from code that runs INSIDE the host
+ * process and need the refresh to happen immediately, explicitly call the
+ * module's `writeDestinations(mga.agent_group_id, <sessionId>)` afterwards.
+ */
+export function ensureAgentDestinationForWiring(mga: MessagingGroupAgent): void {
+  // Guarded: when the agent-to-agent module isn't installed the table
+  // doesn't exist — skip silently. Without the module, the ACL check in
+  // delivery is also skipped (same guard), so channel sends still work.
   if (!hasTable(getDb(), 'agent_destinations')) return;
 
   const existing = getDestinationByTarget(mga.agent_group_id, 'channel', mga.messaging_group_id);