feat(n8n-webhook): add approval-gated notification executor

memory/2026-03-12.md

@@ -69,3 +69,12 @@
   - local HTTP URL `http://192.168.153.113:18808/healthz` → success
   - `https://example.com` with `skip_ssl_certificate_validation: true` → success
 - Cleanup: resolved the temporary verification approval items so `approvalQueue` ended empty after testing.
+- State check before attempting deeper executor work: the live n8n instance currently exposes only four credentials via the public API — `Discord Bot Auth`, `Telegram Bot (OpenClaw)`, `OpenClaw Webhook Header`, and `Header Auth account`. No Gmail/Google Calendar credentials were present, so provider-backed email/calendar execution was intentionally not faked.
+- Implemented the first true approval-gated executor that matches currently available creds:
+  - new action `send_notification_draft`
+  - queues a pending notification in `approvalQueue`
+  - when approved via `approval_queue_resolve`, it executes the existing `notify` path and sends through Telegram + Discord
+- Verified live end-to-end on 2026-03-12:
+  - `send_notification_draft` returned `200` and produced pending id `approval-mmnr8pyq-tjxiqkps`
+  - approving that item via `approval_queue_resolve` returned `executed: true` and `executed_action: "notify"`
+  - `approval_queue_list` showed `pending_count: 0` afterward and recorded the execution metadata in history

skills/n8n-webhook/SKILL.md

@@ -32,6 +32,7 @@ Keep the integration narrow: let OpenClaw decide what to do, and let n8n execute
 - sample payloads:
   - `assets/test-append-log.json`
   - `assets/test-notify.json`
+  - `assets/test-send-notification-draft.json`
 
 ## Quick usage
 
@@ -101,6 +102,7 @@ Use the included workflow asset when you want a ready-made local router for:
 - `append_log` → append small records into workflow static data (`actionLog`, latest 200)
 - `get_logs` → read the most recent retained records from `actionLog`
 - `notify` → send through the current Telegram + Discord notification paths
+- `send_notification_draft` → queue approval-gated notifications that execute on approve through Telegram + Discord
 - `send_email_draft` → queue approval-gated email drafts in workflow static data
 - `create_calendar_event` → queue approval-gated calendar proposals in workflow static data
 - `approval_queue_add` / `approval_queue_list` / `approval_queue_resolve` → manage pending approvals and recent history

skills/n8n-webhook/assets/test-send-notification-draft.json

@@ -0,0 +1,8 @@
+{
+  "action": "send_notification_draft",
+  "request_id": "test-notify-draft-001",
+  "args": {
+    "title": "Draft notification",
+    "message": "This is a queued notification draft for approval."
+  }
+}

skills/n8n-webhook/references/openclaw-action.md

@@ -14,6 +14,7 @@ It implements a real local OpenClaw → n8n router.
   - `append_log`
   - `get_logs`
   - `notify`
+  - `send_notification_draft`
   - `send_email_draft`
   - `create_calendar_event`
   - `approval_queue_add`
@@ -40,6 +41,13 @@ Example stored record:
 {"ts":"2026-03-12T07:00:00Z","source":"openclaw-action","request_id":"abc","text":"backup complete"}
 ```
 
+### `send_notification_draft`
+
+- queues an approval-gated notification proposal into workflow static data under key:
+  - `approvalQueue`
+- when resolved with `decision=approve`, it executes the existing `notify` path and sends through Telegram + Discord
+- uses only the already-configured notification credentials in the live n8n instance
+
 ### `send_email_draft` and `create_calendar_event`
 
 - queue approval-gated proposals into workflow static data under key:
@@ -129,6 +137,7 @@ After import, set this manually in n8n:
 
 - `assets/test-append-log.json`
 - `assets/test-notify.json`
+- `assets/test-send-notification-draft.json`
 - `assets/test-send-email-draft.json`
 - `assets/test-create-calendar-event.json`
 - `assets/test-fetch-and-normalize-url.json`
@@ -142,6 +151,7 @@ export N8N_WEBHOOK_SECRET='YOUR_SECRET_HERE'
 scripts/call-action.sh append_log --args '{"text":"backup complete"}' --pretty
 scripts/call-action.sh get_logs --args '{"limit":5}' --pretty
 scripts/call-action.sh notify --args '{"title":"Workflow finished","message":"n8n router test"}' --pretty
+scripts/call-action.sh send_notification_draft --args-file assets/test-send-notification-draft.json --pretty
 scripts/call-action.sh send_email_draft --args-file assets/test-send-email-draft.json --pretty
 scripts/call-action.sh create_calendar_event --args-file assets/test-create-calendar-event.json --pretty
 scripts/call-action.sh fetch_and_normalize_url --args '{"url":"http://192.168.153.113:18808/healthz"}' --pretty
@@ -152,6 +162,21 @@ scripts/call-action.sh inbound_event_filter --args-file assets/test-inbound-even
 
 ## Expected success examples
 
+### send_notification_draft
+
+```json
+{
+  "ok": true,
+  "request_id": "test-notify-draft-001",
+  "result": {
+    "action": "send_notification_draft",
+    "status": "queued_for_approval",
+    "pending_id": "approval-abc123",
+    "approval_status": "pending"
+  }
+}
+```
+
 ### send_email_draft
 
 ```json

skills/n8n-webhook/references/payloads.md

@@ -113,6 +113,24 @@ Request:
 Purpose:
 - send the message through the currently configured Telegram + Discord notification targets
 
+### `send_notification_draft`
+
+Request:
+
+```json
+{
+  "action": "send_notification_draft",
+  "args": {
+    "title": "optional title",
+    "message": "Please review this notification before send"
+  }
+}
+```
+
+Purpose:
+- queue a notification for approval
+- when the pending item is later approved through `approval_queue_resolve`, it executes the existing `notify` path and fans out through Telegram + Discord
+
 ### `send_email_draft`
 
 Request:

skills/n8n-webhook/scripts/validate-workflow.py

@@ -24,6 +24,7 @@ EXPECTED_TYPES = {
 SAMPLE_FILES = [
     'test-append-log.json',
     'test-notify.json',
+    'test-send-notification-draft.json',
     'test-send-email-draft.json',
     'test-create-calendar-event.json',
     'test-fetch-and-normalize-url.json',
@@ -35,6 +36,7 @@ ROUTER_SNIPPETS = [
     'append_log',
     'get_logs',
     'notify',
+    'send_notification_draft',
     'send_email_draft',
     'create_calendar_event',
     'approval_queue_add',