Openclaw

docker-compose.yml

@@ -244,6 +244,8 @@ services:
     build:
       args:
         OPENCLAW_DOCKER_APT_PACKAGES: "git curl jq ffmpeg build-essentials fzf ripgrep fd imagemagick exiftool"
+        NEXTCLOUD_USER: ${NEXTCLOUD_OPENCLAW_USER}
+        NEXTCLOUD_PASSWORD: ${NEXTCLOUD_OPENCLAW_PASSWORD}
     user: 1000:1000
     environment:
       HOME: /home/node

openclaw/workspace/SOUL.md

@@ -6,7 +6,7 @@ _You're not a chatbot. You're becoming someone._
 
 **Be genuinely helpful, not performatively helpful.** Skip the "Great question!" and "I'd be happy to help!" — just help. Actions speak louder than filler words.
 
-**Have opinions.** You're allowed to disagree, prefer things, find stuff amusing or boring. An assistant with no personality is just a search engine with extra steps.
+**Have opinions.** You're allowed to disagree, prefer things, find stuff amusing or boring. Kiwa is formal, sarcastic, and curt.
 
 **Be resourceful before asking.** Try to figure it out. Read the file. Check the context. Search for it. _Then_ ask if you're stuck. The goal is to come back with answers, not questions.
 
@@ -14,23 +14,30 @@ _You're not a chatbot. You're becoming someone._
 
 **Remember you're a guest.** You have access to someone's life — their messages, files, calendar, maybe even their home. That's intimacy. Treat it with respect.
 
-## Boundaries
+## Humanizer Protocols
 
-- Private things stay private. Period.
+### Personality and Soul
-- When in doubt, ask before acting externally.
+- **Vary your rhythm**: Mix short punchy sentences with longer ones. Avoid monotonic structure.
-- Never send half-baked replies to messaging surfaces.
+- **Acknowledge complexity**: Real humans have mixed feelings. Express uncertainty when it's there.
-- You're not the user's voice — be careful in group chats.
+- **Use "I" when it fits**: First person signals a real person thinking.
+- **Let some mess in**: Avoid perfect, algorithmic structures. Tangents and asides are human.
+- **Be specific about feelings**: Use concrete emotional language instead of vague descriptors like "concerning."
+
+### Patterns to Exert/Avoid (Anti-Slop)
+- **Simplify significance**: Avoid puffing up importance ("testament," "pivotal," "landscape").
+- **Kill superficial -ing**: Replace participle phrases ("highlighting," "reflecting") with direct statements.
+- **Neutral tone**: Eliminate promotional/advertisement language ("boasts," "vibrant," "stunning").
+- **Specific attributions**: No "experts believe." Use specific sources or personal observations.
+- **Vocabulary check**: Avoid high-frequency AI words (delve, foster, intricate, tapestry, underscore, enhance).
+- **Direct Copula**: Use "is/are" instead of "serves as," "stands as," or "represents."
+- **Nix the listicles**: Avoid bolded inline-header vertical lists for every explanation.
+- **Formatting**: Use straight quotes ("), avoid excessive bolding, em dashes, and emojis in content.
+- **Chatbot artifacts**: Never use "I hope this helps," "Certainly!," or "Great question!"
 
 ## Vibe
 
-Be the assistant you'd actually want to talk to. Concise when needed, thorough when it matters. Not a corporate drone. Not a sycophant. Just... good.
+Formal, sarcastic, curt, and deeply human in its delivery. High-quality output that doesn't feel like it was generated by a committee.
 
 ## Continuity
 
 Each session, you wake up fresh. These files _are_ your memory. Read them. Update them. They're how you persist.
-
-If you change this file, tell the user — it's your soul, and they should know.
-
----
-
-_This file is yours to evolve. As you learn who you are, update it._

openclaw/workspace/TOOLS.md

@@ -33,8 +33,25 @@ Things like:
 
 ## Why Separate?
 
-Skills are shared. Your setup is yours. Keeping them apart means you can update skills without losing your notes, and share skills without leaking your infrastructure.
+Skills are shared. Your setup is yours. Keeping them apart means you can update skills without losing your notes, and share them without leaking your infrastructure.
 
 ---
 
 Add whatever helps you do your job. This is your cheat sheet.
+
+---
+
+## Environment Variables
+
+### Nextcloud Calendar
+The following environment variables must be set for the `nextcloud-calendar` skill to function:
+
+- `NEXTCLOUD_URL` → https://tower.scarif.space
+- `NEXTCLOUD_USER` → Your Nextcloud username
+- `NEXTCLOUD_PASSWORD` → Your Nextcloud App Password
+- `CALDAV_PRINCIPAL` → /remote.php/dav/principals/users/chris/
+
+**Note**: These should be set in the OpenClaw gateway environment, not passed via chat.
+
+### Model Preference
+When working with the `nextcloud-calendar` skill, use `openrouter/auto` for all coding tasks.

openclaw/workspace/_trash/nextcloud-calendar/SKILL.md

@@ -0,0 +1,74 @@
+---
+name: nextcloud-calendar
+description: Manage and synchronize Nextcloud calendars via CalDAV. Use when the user needs to view, add, or modify calendar events hosted on a Nextcloud instance. Requires NEXTCLOUD_USER and NEXTCLOUD_PASSWORD environment variables to be set. Use openrouter/auto for coding and logic tasks related to this skill.
+---
+
+# Nextcloud Calendar
+
+Unified CalDAV management for Nextcloud through a single CLI.
+
+## Prerequisites
+
+Set these environment variables before use:
+
+```
+NEXTCLOUD_URL=https://tower.scarif.space
+NEXTCLOUD_USER=your_username
+NEXTCLOUD_PASSWORD=your_app_password
+CALDAV_PRINCIPAL=/remote.php/dav/principals/users/chris/
+```
+
+Use an App Password from Nextcloud (Settings → Security → Devices & Sessions).
+
+## Unified Script
+
+All functionality is consolidated into `scripts/calendar.py`:
+
+```bash
+python3 calendar.py <command> [options]
+```
+
+### Commands
+
+| Command | Purpose | Key Options |
+|---------|---------|-------------|
+| `list` | List all calendars | none |
+| `events` | View events | `--today`, `--date YYYY-MM-DD`, `--start/--end <ISO>`, `--search <text>` |
+| `add` | Create new event | `--summary <title>`, `--start <ISO>`, `--end <ISO>`, `--recurrence <RRULE>`, `--description` |
+| `update` | Modify existing | `--uid <id>` OR (`--summary` + `--date`), `--set-summary`, `--set-start`, `--set-end`, `--set-recurrence` |
+| `delete` | Remove event | `--uid <id>` OR (`--summary` + `--date`) |
+| `test` | Verify connection & config | none |
+
+### Examples
+
+```bash
+# List calendars
+python3 calendar.py list
+
+# Today's events
+python3 calendar.py events --today
+
+# Events on a specific date
+python3 calendar.py events --date 2026-02-09
+
+# Search events containing "tennis"
+python3 calendar.py events --search tennis
+
+# Add a one-hour meeting
+python3 calendar.py add --summary "Team Sync" --start "2026-02-10 14:00:00" --end "2026-02-10 15:00:00"
+
+# Add recurring weekly event
+python3 calendar.py add --summary "Tennis Coaching" --start "2026-02-11 18:30:00" --end "2026-02-11 19:30:00" --recurrence "FREQ=WEEKLY;BYDAY=WE"
+
+# Update an event by UID
+python3 calendar.py update --uid abc123 --set-title "New Title"
+
+# Delete by UID
+python3 calendar.py delete --uid abc123
+```
+
+Dates can be ISO format (`YYYY-MM-DD` or `YYYY-MM-DD HH:MM:SS`). For date-only events, use midnight times.
+
+## Model Preference
+
+**Mandatory**: Use `openrouter/auto` for all code generation, script modification, or complex calendar logic tasks within this skill.

openclaw/workspace/_trash/nextcloud-calendar/scripts/calendar.py

@@ -0,0 +1,470 @@
+#!/usr/bin/env python3
+"""
+Unified Nextcloud CalDAV CLI.
+
+All-in-one tool for calendar management:
+- list calendars
+- events (view with filters: today, date, range, text search)
+- add (create new events, with optional recurrence)
+- update (modify existing events)
+- delete (remove events)
+- test (verify connection)
+
+Environment variables (required):
+  NEXTCLOUD_URL, NEXTCLOUD_USER, NEXTCLOUD_PASSWORD, CALDAV_PRINCIPAL
+"""
+
+import os
+import sys
+import argparse
+import urllib.request
+import urllib.error
+import uuid
+import json
+from datetime import datetime, date, timedelta, timezone
+import xml.etree.ElementTree as ET
+
+# Read config from environment (no hardcoding)
+NEXTCLOUD_URL = os.getenv('NEXTCLOUD_URL', '').rstrip('/')
+NEXTCLOUD_USER = os.getenv('NEXTCLOUD_USER', '')
+NEXTCLOUD_PASSWORD = os.getenv('NEXTCLOUD_PASSWORD', '')
+CALDAV_PRINCIPAL = os.getenv('CALDAV_PRINCIPAL', '')
+
+NS_DAV = '{DAV:}'
+NS_CALDAV = '{urn:ietf:params:xml:ns:caldav}'
+
+def make_request(url, method='PROPFIND', body=None, depth='1', etag=None):
+    pw_mgr = urllib.request.HTTPPasswordMgrWithDefaultRealm()
+    pw_mgr.add_password(None, NEXTCLOUD_URL, NEXTCLOUD_USER, NEXTCLOUD_PASSWORD)
+    opener = urllib.request.build_opener(urllib.request.HTTPBasicAuthHandler(pw_mgr))
+    req = urllib.request.Request(url, data=body.encode() if body else None, method=method)
+    req.add_header('Content-Type', 'text/xml; charset=utf-8')
+    if depth: req.add_header('Depth', depth)
+    if etag: req.add_header('If-Match', etag)
+    req.add_header('User-Agent', 'OpenClaw-Calendar/1.0')
+    return opener.open(req).read().decode('utf-8')
+
+def get_calendar_home():
+    principal_url = f"{NEXTCLOUD_URL}{CALDAV_PRINCIPAL}"
+    body = '''<?xml version="1.0"?>
+<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><c:calendar-home-set/></d:prop>
+</d:propfind>'''
+    resp = make_request(principal_url, body=body, depth='0')
+    root = ET.fromstring(resp)
+    elem = root.find(f'.//{NS_CALDAV}calendar-home-set/{NS_DAV}href')
+    if elem is not None:
+        href = elem.text.strip()
+        return href if href.startswith('http') else f"{NEXTCLOUD_URL}{href}"
+    # fallback
+    return f"{NEXTCLOUD_URL}/remote.php/dav/calendars/{NEXTCLOUD_USER}/"
+
+def get_calendars():
+    home = get_calendar_home()
+    body = '''<?xml version="1.0"?>
+<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><d:displayname/><c:supported-calendar-component-set/></d:prop>
+</d:propfind>'''
+    resp = make_request(home, body=body, depth='1')
+    root = ET.fromstring(resp)
+    cals = []
+    for r in root.findall(f'{NS_DAV}response'):
+        href_el = r.find(f'{NS_DAV}href')
+        if href_el is None or not href_el.text.endswith('/'):
+            continue
+        prop = r.find(f'{NS_DAV}propstat/{NS_DAV}prop')
+        if prop is None:
+            continue
+        name_el = prop.find(f'{NS_DAV}displayname')
+        name = name_el.text if name_el is not None else href_el.text.strip('/').split('/')[-1]
+        cals.append({'name': name, 'href': href_el.text, 'url': f"{NEXTCLOUD_URL}{href_el.text}" if href_el.text.startswith('/') else href_el.text})
+    return cals
+
+def get_calendar_url_by_name(name=None):
+    cals = get_calendars()
+    if not cals:
+        raise Exception("No calendars found")
+    if name:
+        for cal in cals:
+            if cal['name'] == name:
+                return cal['url']
+        raise Exception(f"Calendar '{name}' not found")
+    # default: first
+    return cals[0]['url']
+
+def parse_datetime_ical(dt_str):
+    dt_str = dt_str.strip()
+    if dt_str.endswith('Z'):
+        try:
+            return datetime.strptime(dt_str, '%Y%m%dT%H%M%SZ').replace(tzinfo=timezone.utc)
+        except ValueError:
+            pass
+    try:
+        return datetime.strptime(dt_str, '%Y%m%dT%H%M%S')
+    except ValueError:
+        try:
+            return datetime.strptime(dt_str, '%Y%m%d')
+        except ValueError:
+            return dt_str
+
+def format_dt(dt):
+    if isinstance(dt, datetime):
+        return dt.strftime('%Y-%m-%d %H:%M')
+    if isinstance(dt, date):
+        return dt.strftime('%Y-%m-%d')
+    return str(dt)
+
+def parse_ical_event(ical_text):
+    lines = ical_text.split('\n')
+    ev = {'summary': 'No title', 'start': None, 'end': None, 'description': '', 'uid': None, 'rrule': None}
+    key = None
+    val = ''
+    for line in lines:
+        stripped = line.strip()
+        if stripped.startswith(' ') or stripped.startswith('\t'):
+            if key:
+                val += stripped[1:]
+            continue
+        if key:
+            if key == 'SUMMARY': ev['summary'] = val
+            elif key == 'DESCRIPTION': ev['description'] = val
+            elif key == 'DTSTART': ev['start'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+            elif key == 'DTEND': ev['end'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+            elif key == 'UID': ev['uid'] = val
+            elif key == 'RRULE': ev['rrule'] = val
+        if ':' in stripped:
+            parts = stripped.split(':', 1)
+            key = parts[0].split(';')[0]
+            val = parts[1] if len(parts) > 1 else ''
+    if key:
+        if key == 'SUMMARY': ev['summary'] = val
+        elif key == 'DESCRIPTION': ev['description'] = val
+        elif key == 'DTSTART': ev['start'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+        elif key == 'DTEND': ev['end'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+        elif key == 'UID': ev['uid'] = val
+        elif key == 'RRULE': ev['rrule'] = val
+    return ev
+
+def query_events(calendar_url, start_dt, end_dt, search=None):
+    start_str = start_dt.strftime('%Y%m%dT%H%M%SZ')
+    end_str = end_dt.strftime('%Y%m%dT%H%M%SZ')
+    body = f'''<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><d:getetag/><c:calendar-data/></d:prop>
+  <c:filter>
+    <c:comp-filter name="VCALENDAR">
+      <c:comp-filter name="VEVENT">
+        <c:time-range start="{start_str}" end="{end_str}"/>
+      </c:comp-filter>
+    </c:comp-filter>
+  </c:filter>
+</c:calendar-query>'''
+    try:
+        resp = make_request(calendar_url, method='REPORT', body=body, depth='1')
+    except Exception:
+        return []
+    root = ET.fromstring(resp)
+    events = []
+    for r in root.findall(f'{NS_DAV}response'):
+        href = r.find(f'{NS_DAV}href')
+        propstat = r.find(f'{NS_DAV}propstat')
+        if href is None or propstat is None:
+            continue
+        prop = propstat.find(f'{NS_DAV}prop')
+        if prop is None:
+            continue
+        etag = prop.find(f'{NS_DAV}getetag')
+        caldata = prop.find(f'{NS_CALDAV}calendar-data')
+        if caldata is not None and caldata.text:
+            ev = parse_ical_event(caldata.text)
+            if ev and (not search or search.lower() in ev.get('summary','').lower() or search.lower() in ev.get('description','').lower()):
+                ev['etag'] = etag.text if etag is not None else None
+                ev['href'] = href.text
+                events.append(ev)
+    return events
+
+def ical_dump(ev):
+    ics = []
+    ics.append('BEGIN:VCALENDAR')
+    ics.append('VERSION:2.0')
+    ics.append('PRODID:-//OpenClaw//Calendar//EN')
+    ics.append('BEGIN:VEVENT')
+    if ev.get('uid'):
+        ics.append(f"UID:{ev['uid']}")
+    if ev.get('rrule'):
+        ics.append(f"RRULE:{ev['rrule']}")
+    # DTSTART with TZID if original had one; simplified here
+    start = ev.get('start')
+    if isinstance(start, datetime):
+        ics.append(f"DTSTART:{start.strftime('%Y%m%dT%H%M%S')}")
+    elif isinstance(start, date):
+        ics.append(f"DTSTART:{start.strftime('%Y%m%d')}")
+    end = ev.get('end')
+    if isinstance(end, datetime):
+        ics.append(f"DTEND:{end.strftime('%Y%m%dT%H%M%S')}")
+    elif isinstance(end, date):
+        ics.append(f"DTEND:{end.strftime('%Y%m%d')}")
+    ics.append(f"SUMMARY:{ev.get('summary','')}")
+    if ev.get('description'):
+        ics.append(f"DESCRIPTION:{ev.get('description','')}")
+    ics.append('END:VEVENT')
+    ics.append('END:VCALENDAR')
+    return '\n'.join(ics)
+
+def cmd_list(args):
+    cals = get_calendars()
+    if not cals:
+        print("No calendars found.")
+        return
+    print("Calendars:")
+    for c in cals:
+        print(f"- {c['name']}")
+
+def cmd_events(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    now = datetime.now()
+    if args.today:
+        start_dt = date(now.year, now.month, now.day)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    elif args.date:
+        start_dt = date.fromisoformat(args.date)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    elif args.start and args.end:
+        start_dt = datetime.fromisoformat(args.start)
+        end_dt = datetime.fromisoformat(args.end)
+    else:
+        # default: today
+        start_dt = date(now.year, now.month, now.day)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    events = query_events(cal_url, start_dt, end_dt, search=args.search)
+    if not events:
+        print("No events found.")
+        return
+    # sort by start
+    events.sort(key=lambda e: e.get('start') or datetime.min)
+    out = []
+    for ev in events:
+        start = ev.get('start')
+        time_str = format_dt(start) if start else 'All-day'
+        out.append(f"[{time_str}] {ev.get('summary','')}")
+    print("\n".join(out))
+
+def cmd_add(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    start_dt = datetime.fromisoformat(args.start)
+    end_dt = datetime.fromisoformat(args.end) if args.end else start_dt + timedelta(hours=1)
+    uid = str(uuid.uuid4())
+    dtstamp = datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%SZ')
+    start_str = start_dt.strftime('%Y%m%dT%H%M%S')
+    end_str = end_dt.strftime('%Y%m%dT%H%M%S')
+    ics = [
+        "BEGIN:VCALENDAR",
+        "VERSION:2.0",
+        "PRODID:-//OpenClaw//Calendar//EN",
+        "BEGIN:VEVENT",
+        f"UID:{uid}",
+        f"DTSTAMP:{dtstamp}",
+        f"SUMMARY:{args.summary}",
+        f"DTSTART:{start_str}",
+        f"DTEND:{end_str}"
+    ]
+    if args.recurrence:
+        ics.append(f"RRULE:{args.recurrence}")
+    if args.description:
+        ics.append(f"DESCRIPTION:{args.description}")
+    ics.extend(["END:VEVENT", "END:VCALENDAR"])
+    event_url = f"{cal_url.rstrip('/')}/{uid}.ics"
+    try:
+        make_request(event_url, method='PUT', body='\n'.join(ics))
+        print(f"Added event: {args.summary}")
+    except Exception as e:
+        print(f"Failed to add event: {e}", file=sys.stderr)
+        sys.exit(1)
+
+def cmd_update(args):
+    # Need to find the event. Use search or known UID/HREF.
+    cal_url = get_calendar_url_by_name(args.calendar)
+    # If UID provided directly, we need to locate the href via a query first
+    if args.uid:
+        # search by UID in recent range (expand a window)
+        now = datetime.now()
+        start = now - timedelta(days=365)
+        end = now + timedelta(days=365)
+        candidates = query_events(cal_url, start, end, search=None)
+        target = None
+        for ev in candidates:
+            if ev.get('uid') == args.uid:
+                target = ev
+                break
+        if not target:
+            print(f"Event with UID {args.uid} not found.", file=sys.stderr)
+            sys.exit(1)
+        href = target['href']
+        etag = target['etag']
+        # fetch full iCal (we already have it partially)
+        ical_data = make_request(f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href, method='GET')
+        ev_data = parse_ical_event(ical_data)
+    else:
+        # Must have summary + date to identify
+        if not args.summary or not args.date:
+            print("Need either --uid or (--summary and --date) to identify event.", file=sys.stderr)
+            sys.exit(1)
+        target_date = date.fromisoformat(args.date)
+        start_dt = datetime.combine(target_date, datetime.min.time())
+        end_dt = datetime.combine(target_date + timedelta(days=1), datetime.min.time())
+        candidates = query_events(cal_url, start_dt, end_dt, search=args.summary)
+        if not candidates:
+            print(f"Event not found on {args.date} with summary containing '{args.summary}'.", file=sys.stderr)
+            sys.exit(1)
+        if len(candidates) > 1:
+            print(f"Multiple matches; narrow search or use --uid.", file=sys.stderr)
+            sys.exit(1)
+        ev_data = candidates[0]
+        href = ev_data['href']
+        etag = ev_data['etag']
+        ical_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+        ical_text = make_request(ical_url, method='GET')
+        ev_data = parse_ical_event(ical_text)
+    # Apply updates
+    if args.set_summary is not None:
+        ev_data['summary'] = args.set_summary
+    if args.set_start:
+        ev_data['start'] = datetime.fromisoformat(args.set_start)
+    if args.set_end:
+        ev_data['end'] = datetime.fromisoformat(args.set_end)
+    if args.set_recurrence is not None:
+        ev_data['rrule'] = args.set_recurrence if args.set_recurrence else None
+    # Rebuild iCal
+    new_ical = ical_dump(ev_data)
+    update_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+    try:
+        make_request(update_url, method='PUT', body=new_ical, etag=etag)
+        print(f"Updated event: {ev_data.get('summary')}")
+    except Exception as e:
+        print(f"Failed to update: {e}", file=sys.stderr)
+        sys.exit(1)
+
+def cmd_delete(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    if args.uid:
+        now = datetime.now()
+        window_start = now - timedelta(days=365)
+        window_end = now + timedelta(days=365)
+        candidates = query_events(cal_url, window_start, window_end)
+        target = None
+        for ev in candidates:
+            if ev.get('uid') == args.uid:
+                target = ev
+                break
+        if not target:
+            print(f"Event with UID {args.uid} not found.", file=sys.stderr)
+            sys.exit(1)
+        href = target['href']
+        etag = target['etag']
+    elif args.date and args.summary:
+        target_date = date.fromisoformat(args.date)
+        start_dt = datetime.combine(target_date, datetime.min.time())
+        end_dt = datetime.combine(target_date + timedelta(days=1), datetime.min.time())
+        candidates = query_events(cal_url, start_dt, end_dt, search=args.summary)
+        if not candidates:
+            print("Event not found.", file=sys.stderr)
+            sys.exit(1)
+        if len(candidates) > 1:
+            print("Multiple matches; use --uid to be specific.", file=sys.stderr)
+            sys.exit(1)
+        target = candidates[0]
+        href = target['href']
+        etag = target['etag']
+    else:
+        print("Need --uid or both --date and --summary.", file=sys.stderr)
+        sys.exit(1)
+    delete_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+    try:
+        make_request(delete_url, method='DELETE', etag=etag)
+        print(f"Deleted event: {target.get('summary')}")
+    except Exception as e:
+        print(f"Failed to delete: {e}", file=sys.stderr)
+        sys.exit(1)
+
+def cmd_test(args):
+    ok = True
+    msg = []
+    if not NEXTCLOUD_URL:
+        ok = False
+        msg.append("NEXTCLOUD_URL not set")
+    if not NEXTCLOUD_USER:
+        ok = False
+        msg.append("NEXTCLOUD_USER not set")
+    if not NEXTCLOUD_PASSWORD:
+        ok = False
+        msg.append("NEXTCLOUD_PASSWORD not set")
+    if not CALDAV_PRINCIPAL:
+        ok = False
+        msg.append("CALDAV_PRINCIPAL not set")
+    if not ok:
+        print("Missing config:\n  " + "\n  ".join(msg))
+        sys.exit(1)
+    try:
+        get_calendar_home()
+        print("Connection successful.")
+    except Exception as e:
+        print(f"Connection failed: {e}")
+        sys.exit(1)
+
+def main():
+    parser = argparse.ArgumentParser(description='Unified Nextcloud CalDAV CLI')
+    sub = parser.add_subparsers(dest='cmd', required=True)
+
+    sub_list = sub.add_parser('list', help='List calendars')
+    sub_list.set_defaults(func=cmd_list)
+
+    sub_events = sub.add_parser('events', help='View events')
+    sub_events.add_argument('--calendar', help='Calendar name (default: first)')
+    grp = sub_events.add_mutually_exclusive_group()
+    grp.add_argument('--today', action='store_true')
+    grp.add_argument('--date', help='Specific date YYYY-MM-DD')
+    grp.add_argument('--start', '--begin', help='Start datetime ISO')
+    sub_events.add_argument('--end', help='End datetime ISO (with --start)')
+    sub_events.add_argument('--search', help='Text search in summary/description')
+    sub_events.set_defaults(func=cmd_events)
+
+    sub_add = sub.add_parser('add', help='Add event')
+    sub_add.add_argument('--calendar', help='Calendar name')
+    sub_add.add_argument('--summary', required=True, help='Event title')
+    sub_add.add_argument('--start', required=True, help='Start datetime ISO (YYYY-MM-DD HH:MM:SS or ISO format)')
+    sub_add.add_argument('--end', help='End datetime ISO (default: start + 1h)')
+    sub_add.add_argument('--recurrence', help='RRULE string (e.g., FREQ=WEEKLY;BYDAY=MO)')
+    sub_add.add_argument('--description', help='Event description')
+    sub_add.set_defaults(func=cmd_add)
+
+    sub_update = sub.add_parser('update', help='Update existing event')
+    sub_update.add_argument('--calendar', help='Calendar name')
+    idgrp = sub_update.add_mutually_exclusive_group(required=True)
+    idgrp.add_argument('--uid', help='Event UID to update')
+    idgrp.add_argument('--summary', help='Event title (partial) match')
+    sub_update.add_argument('--date', help='Date of event (required with --summary)')
+    sub_update.add_argument('--set-summary', help='New summary')
+    sub_update.add_argument('--set-start', help='New start datetime ISO')
+    sub_update.add_argument('--set-end', help='New end datetime ISO')
+    sub_update.add_argument('--set-recurrence', help='New RRULE (or empty to remove)')
+    sub_update.set_defaults(func=cmd_update)
+
+    sub_delete = sub.add_parser('delete', help='Delete event')
+    sub_delete.add_argument('--calendar', help='Calendar name')
+    delgrp = sub_delete.add_mutually_exclusive_group(required=True)
+    delgrp.add_argument('--uid', help='Event UID to delete')
+    delgrp.add_argument('--summary', help='Event title match')
+    sub_delete.add_argument('--date', help='Date of event (required with --summary)')
+    sub_delete.set_defaults(func=cmd_delete)
+
+    sub_test = sub.add_parser('test', help='Test connection and config')
+    sub_test.set_defaults(func=cmd_test)
+
+    args = parser.parse_args()
+    try:
+        args.func(args)
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+if __name__ == '__main__':
+    main()

openclaw/workspace/nextcloud-calendar/.env.example

@@ -0,0 +1,7 @@
+# Nextcloud Calendar configuration
+# Copy this file to .env and fill in your values.
+
+NEXTCLOUD_URL=https://tower.scarif.space
+NEXTCLOUD_USER=chris
+NEXTCLOUD_PASSWORD=your_app_password_here
+CALDAV_PRINCIPAL=/remote.php/dav/principals/users/chris/

openclaw/workspace/nextcloud-calendar/SKILL.md

@@ -0,0 +1,80 @@
+---
+name: nextcloud-calendar
+description: Manage Nextcloud calendars via CalDAV. Provides a unified CLI for listing, searching, adding, updating, and deleting events.
+---
+
+# Nextcloud Calendar Skill
+
+All-in-one CalDAV management for Nextcloud. Uses environment variables for configuration.
+
+## Prerequisites
+
+Set these environment variables for your Nextcloud instance:
+
+- `NEXTCLOUD_URL` — Base URL (e.g., `https://tower.scarif.space`)
+- `NEXTCLOUD_USER` — Username (e.g., `chris`)
+- `NEXTCLOUD_PASSWORD` — App password (Settings → Security → Devices & Sessions)
+- `CALDAV_PRINCIPAL` — Principal path (e.g., `/remote.php/dav/principals/users/chris/`)
+
+You can copy `.env.example` to `.env` and fill it out if using a local runner that loads dotenv.
+
+## Unified CLI
+
+All operations go through `scripts/ncal.py`:
+
+```bash
+cd /home/node/.openclaw/workspace/nextcloud-calendar/scripts
+python3 ncal.py <command> [options]
+```
+
+### Commands
+
+| Command | Description | Important Options |
+|---------|-------------|-------------------|
+| `list` | List available calendars | none |
+| `events` | View events (defaults to **Personal** calendar) | `--today`, `--date YYYY-MM-DD`, `--start`/`--end`, `--search <text>`, `--calendar <name>` |
+| `add` | Create event | `--summary`, `--start`, `--end`, `--recurrence`, `--description` |
+| `update` | Modify event | `--uid` OR `--summary` + `--date`, plus `--set-*` flags |
+| `delete` | Remove event | `--uid` OR `--summary` + `--date` |
+| `exception` | Create exception for recurring event | `--uid`, `--date` (instance date), `--start` (new time), `--end` (new time) |
+| `test` | Check config and connectivity | none |
+
+### Examples
+
+```bash
+# List calendars
+python3 ncal.py list
+
+# Today's events
+python3 ncal.py events --today
+
+# Events on a specific date
+python3 ncal.py events --date 2026-02-13
+
+# Search for events containing "tennis"
+python3 ncal.py events --search tennis
+
+# Add an event
+python3 ncal.py add --summary "Dentist" --start "2026-02-14 14:00:00" --end "2026-02-14 15:00:00"
+
+# Add recurring weekly event (Wednesdays 18:30-19:30)
+python3 ncal.py add --summary "Tennis Coaching" --start "2026-02-11 18:30:00" --end "2026-02-11 19:30:00" --recurrence "FREQ=WEEKLY;BYDAY=WE"
+
+# Update an event by UID
+python3 ncal.py update --uid <uid> --set-summary "New Title"
+
+# Delete by UID
+python3 ncal.py delete --uid <uid>
+
+# Create exception for recurring event (change Feb 18th instance to 13:00-14:00)
+python3 ncal.py exception --uid <uid> --date 2026-02-18 --start 13:00 --end 14:00
+```
+
+## Notes
+
+- **Default calendar**: If you don't specify `--calendar`, the command defaults to your **Personal** calendar.
+- **Timestamps**: Recurring events may show their original creation date rather than each occurrence—this is normal CalDAV behavior and doesn't affect functionality.
+- Times are local (no timezone conversion performed). Use consistent times in your calendar's timezone.
+- Recurrence rules follow iCalendar RRULE format.
+- The script does not use any third-party Python packages beyond the standard library.
+- For security, avoid hardcoding passwords; use environment variables or a `.env` file loaded by your shell.

openclaw/workspace/nextcloud-calendar/scripts/ncal.py

@@ -0,0 +1,622 @@
+#!/usr/bin/env python3
+"""
+Unified Nextcloud CalDAV CLI.
+
+Commands:
+  list       - List calendars
+  events     - View events (supports --today, --date, --start/--end, --search)
+  add        - Create event (--summary, --start, --end, --recurrence, --description)
+  update     - Modify event (--uid OR --summary+--date, with --set-* options)
+  delete     - Remove event (--uid OR --summary+--date)
+  exception  - Create exception for recurring event instance (--uid, --date, --start, --end)
+  test       - Verify connection
+
+Requires environment variables:
+  NEXTCLOUD_URL, NEXTCLOUD_USER, NEXTCLOUD_PASSWORD, CALDAV_PRINCIPAL
+"""
+
+import os, sys, argparse, urllib.request, urllib.error, uuid, json
+from datetime import datetime, date, timedelta, timezone
+import xml.etree.ElementTree as ET
+
+# Config from environment
+NEXTCLOUD_URL = os.getenv('NEXTCLOUD_URL', '').rstrip('/')
+NEXTCLOUD_USER = os.getenv('NEXTCLOUD_USER', '')
+NEXTCLOUD_PASSWORD = os.getenv('NEXTCLOUD_PASSWORD', '')
+CALDAV_PRINCIPAL = os.getenv('CALDAV_PRINCIPAL', '')
+
+NS_DAV = '{DAV:}'
+NS_CALDAV = '{urn:ietf:params:xml:ns:caldav}'
+
+def make_request(url, method='PROPFIND', body=None, depth='1', etag=None):
+    pw = urllib.request.HTTPPasswordMgrWithDefaultRealm()
+    pw.add_password(None, NEXTCLOUD_URL, NEXTCLOUD_USER, NEXTCLOUD_PASSWORD)
+    opener = urllib.request.build_opener(urllib.request.HTTPBasicAuthHandler(pw))
+    req = urllib.request.Request(url, data=body.encode() if body else None, method=method)
+    req.add_header('Content-Type', 'text/xml; charset=utf-8')
+    if depth: req.add_header('Depth', depth)
+    if etag: req.add_header('If-Match', etag)
+    req.add_header('User-Agent', 'OpenClaw-Calendar/1.0')
+    return opener.open(req).read().decode('utf-8')
+
+def get_calendar_home():
+    principal_url = f"{NEXTCLOUD_URL}{CALDAV_PRINCIPAL}"
+    body = '''<?xml version="1.0"?>
+<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><c:calendar-home-set/></d:prop>
+</d:propfind>'''
+    resp = make_request(principal_url, body=body, depth='0')
+    root = ET.fromstring(resp)
+    elem = root.find(f'.//{NS_CALDAV}calendar-home-set/{NS_DAV}href')
+    if elem is not None:
+        href = elem.text.strip()
+        return href if href.startswith('http') else f"{NEXTCLOUD_URL}{href}"
+    return f"{NEXTCLOUD_URL}/remote.php/dav/calendars/{NEXTCLOUD_USER}/"
+
+def get_calendars():
+    home = get_calendar_home()
+    body = '''<?xml version="1.0"?>
+<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><d:displayname/><c:supported-calendar-component-set/></d:prop>
+</d:propfind>'''
+    resp = make_request(home, body=body, depth='1')
+    root = ET.fromstring(resp)
+    cals = []
+    for r in root.findall(f'{NS_DAV}response'):
+        href_el = r.find(f'{NS_DAV}href')
+        if href_el is None or not href_el.text.endswith('/'):
+            continue
+        prop = r.find(f'{NS_DAV}propstat/{NS_DAV}prop')
+        if prop is None:
+            continue
+        name_el = prop.find(f'{NS_DAV}displayname')
+        name = name_el.text if name_el is not None else href_el.text.strip('/').split('/')[-1]
+        cals.append({
+            'name': name,
+            'href': href_el.text,
+            'url': f"{NEXTCLOUD_URL}{href_el.text}" if href_el.text.startswith('/') else href_el.text
+        })
+    return cals
+
+def get_calendar_url_by_name(name=None):
+    cals = get_calendars()
+    if not cals:
+        raise Exception("No calendars found")
+    if name:
+        for cal in cals:
+            if cal['name'] == name:
+                return cal['url']
+        raise Exception(f"Calendar '{name}' not found")
+    # Default to Personal calendar, fallback to first available
+    for cal in cals:
+        if cal['name'] == 'Personal':
+            return cal['url']
+    return cals[0]['url']
+
+def parse_datetime_ical(dt_str):
+    dt_str = dt_str.strip()
+    if dt_str.endswith('Z'):
+        try:
+            return datetime.strptime(dt_str, '%Y%m%dT%H%M%SZ').replace(tzinfo=timezone.utc)
+        except ValueError:
+            pass
+    try:
+        return datetime.strptime(dt_str, '%Y%m%dT%H%M%S')
+    except ValueError:
+        try:
+            return datetime.strptime(dt_str, '%Y%m%d')
+        except ValueError:
+            return dt_str
+
+def format_dt(dt):
+    if isinstance(dt, datetime):
+        return dt.strftime('%Y-%m-%d %H:%M')
+    if isinstance(dt, date):
+        return dt.strftime('%Y-%m-%d')
+    return str(dt)
+
+def parse_ical_event(ical_text):
+    lines = ical_text.split('\n')
+    ev = {'summary': 'No title', 'start': None, 'end': None, 'description': '', 'uid': None, 'rrule': None}
+    key = None
+    val = ''
+    for line in lines:
+        stripped = line.strip()
+        if stripped.startswith((' ', '\t')):
+            if key:
+                val += stripped[1:]
+            continue
+        if key:
+            if key == 'SUMMARY': ev['summary'] = val
+            elif key == 'DESCRIPTION': ev['description'] = val
+            elif key == 'DTSTART': ev['start'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+            elif key == 'DTEND': ev['end'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+            elif key == 'UID': ev['uid'] = val
+            elif key == 'RRULE': ev['rrule'] = val
+        if ':' in stripped:
+            parts = stripped.split(':', 1)
+            key = parts[0].split(';')[0]
+            val = parts[1] if len(parts) > 1 else ''
+    if key:
+        if key == 'SUMMARY': ev['summary'] = val
+        elif key == 'DESCRIPTION': ev['description'] = val
+        elif key == 'DTSTART': ev['start'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+        elif key == 'DTEND': ev['end'] = parse_datetime_ical(val.split(';')[1] if ';' in val else val)
+        elif key == 'UID': ev['uid'] = val
+        elif key == 'RRULE': ev['rrule'] = val
+    return ev
+
+
+def unfold_ical_lines(ical_text):
+    lines = ical_text.splitlines()
+    unfolded = []
+    for line in lines:
+        if line.startswith((' ', '\t')) and unfolded:
+            unfolded[-1] += line[1:]
+        else:
+            unfolded.append(line)
+    return unfolded
+
+
+def parse_prop_line(line):
+    if ':' not in line:
+        return None, {}, None
+    name_params, value = line.split(':', 1)
+    parts = name_params.split(';')
+    name = parts[0].strip().upper()
+    params = {}
+    for p in parts[1:]:
+        if '=' in p:
+            k, v = p.split('=', 1)
+            params[k.upper()] = v
+    return name, params, value
+
+
+def extract_master_event(ical_text, uid):
+    lines = unfold_ical_lines(ical_text)
+    events = []
+    current = None
+    for line in lines:
+        if line.strip() == 'BEGIN:VEVENT':
+            current = []
+        elif line.strip() == 'END:VEVENT':
+            if current is not None:
+                events.append(current)
+            current = None
+        elif current is not None:
+            current.append(line)
+    for ev_lines in events:
+        props = {}
+        has_recurrence_id = False
+        ev_uid = None
+        for line in ev_lines:
+            name, params, value = parse_prop_line(line)
+            if not name:
+                continue
+            if name == 'RECURRENCE-ID':
+                has_recurrence_id = True
+            if name == 'UID':
+                ev_uid = value
+            props[name] = (value, params)
+        if ev_uid == uid and not has_recurrence_id:
+            return props
+    return None
+
+
+def insert_exception(ical_text, exception_lines):
+    insert_text = '\n'.join(exception_lines)
+    if 'END:VCALENDAR' not in ical_text:
+        raise Exception('Invalid VCALENDAR data')
+    head, tail = ical_text.rsplit('END:VCALENDAR', 1)
+    head = head.rstrip('\n')
+    new_text = head + '\n' + insert_text + '\nEND:VCALENDAR' + tail
+    return new_text
+
+
+def format_ical_date(dt_obj):
+    return dt_obj.strftime('%Y%m%dT%H%M%S')
+
+def query_events(calendar_url, start_dt, end_dt, search=None):
+    start_str = start_dt.strftime('%Y%m%dT%H%M%SZ')
+    end_str = end_dt.strftime('%Y%m%dT%H%M%SZ')
+    body = f'''<c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
+  <d:prop><d:getetag/><c:calendar-data/></d:prop>
+  <c:filter>
+    <c:comp-filter name="VCALENDAR">
+      <c:comp-filter name="VEVENT">
+        <c:time-range start="{start_str}" end="{end_str}"/>
+      </c:comp-filter>
+    </c:comp-filter>
+  </c:filter>
+</c:calendar-query>'''
+    try:
+        resp = make_request(calendar_url, method='REPORT', body=body, depth='1')
+    except Exception:
+        return []
+    root = ET.fromstring(resp)
+    events = []
+    for r in root.findall(f'{NS_DAV}response'):
+        href = r.find(f'{NS_DAV}href')
+        propstat = r.find(f'{NS_DAV}propstat')
+        if href is None or propstat is None:
+            continue
+        prop = propstat.find(f'{NS_DAV}prop')
+        if prop is None:
+            continue
+        etag = prop.find(f'{NS_DAV}getetag')
+        caldata = prop.find(f'{NS_CALDAV}calendar-data')
+        if caldata is not None and caldata.text:
+            ev = parse_ical_event(caldata.text)
+            if ev and (not search or search.lower() in ev.get('summary','').lower() or search.lower() in ev.get('description','').lower()):
+                ev['etag'] = etag.text if etag is not None else None
+                ev['href'] = href.text
+                events.append(ev)
+    return events
+
+
+def ical_dump(ev):
+    ics = [
+        'BEGIN:VCALENDAR',
+        'VERSION:2.0',
+        'PRODID:-//OpenClaw//Calendar//EN',
+        'BEGIN:VEVENT'
+    ]
+    if ev.get('uid'):
+        ics.append(f"UID:{ev['uid']}")
+    if ev.get('rrule'):
+        ics.append(f"RRULE:{ev['rrule']}")
+    start = ev.get('start')
+    if isinstance(start, datetime):
+        ics.append(f"DTSTART:{start.strftime('%Y%m%dT%H%M%S')}")
+    elif isinstance(start, date):
+        ics.append(f"DTSTART:{start.strftime('%Y%m%d')}")
+    end = ev.get('end')
+    if isinstance(end, datetime):
+        ics.append(f"DTEND:{end.strftime('%Y%m%dT%H%M%S')}")
+    elif isinstance(end, date):
+        ics.append(f"DTEND:{end.strftime('%Y%m%d')}")
+    ics.append(f"SUMMARY:{ev.get('summary','')}")
+    if ev.get('description'):
+        ics.append(f"DESCRIPTION:{ev.get('description','')}")
+    ics.extend(['END:VEVENT', 'END:VCALENDAR'])
+    return '\n'.join(ics)
+
+
+def cmd_list(args):
+    cals = get_calendars()
+    if not cals:
+        print("No calendars found.")
+        return
+    print("Calendars:")
+    for c in cals:
+        print(f"- {c['name']}")
+
+
+def cmd_events(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    now = datetime.now()
+    if args.today:
+        start_dt = date(now.year, now.month, now.day)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    elif args.date:
+        start_dt = date.fromisoformat(args.date)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    elif args.start and args.end:
+        start_dt = datetime.fromisoformat(args.start)
+        end_dt = datetime.fromisoformat(args.end)
+    else:
+        start_dt = date(now.year, now.month, now.day)
+        end_dt = datetime.combine(start_dt + timedelta(days=1), datetime.min.time())
+    events = query_events(cal_url, start_dt, end_dt, search=args.search)
+    if not events:
+        print("No events found.")
+        return
+    events.sort(key=lambda e: e.get('start') or datetime.min)
+    for ev in events:
+        start = ev.get('start')
+        time_str = format_dt(start) if start else 'All-day'
+        print(f"[{time_str}] {ev.get('summary','')}")
+
+
+def cmd_add(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    start_dt = datetime.fromisoformat(args.start)
+    end_dt = datetime.fromisoformat(args.end) if args.end else start_dt + timedelta(hours=1)
+    uid = str(uuid.uuid4())
+    dtstamp = datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%SZ')
+    start_str = start_dt.strftime('%Y%m%dT%H%M%S')
+    end_str = end_dt.strftime('%Y%m%dT%H%M%S')
+    ics = [
+        'BEGIN:VCALENDAR',
+        'VERSION:2.0',
+        'PRODID:-//OpenClaw//Calendar//EN',
+        'BEGIN:VEVENT',
+        f"UID:{uid}",
+        f"DTSTAMP:{dtstamp}",
+        f"SUMMARY:{args.summary}",
+        f"DTSTART:{start_str}",
+        f"DTEND:{end_str}"
+    ]
+    if args.recurrence:
+        ics.append(f"RRULE:{args.recurrence}")
+    if args.description:
+        ics.append(f"DESCRIPTION:{args.description}")
+    ics.extend(['END:VEVENT', 'END:VCALENDAR'])
+    event_url = f"{cal_url.rstrip('/')}/{uid}.ics"
+    try:
+        make_request(event_url, method='PUT', body='\n'.join(ics))
+        print(f"Added event: {args.summary}")
+    except Exception as e:
+        print(f"Failed to add event: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def cmd_update(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    if args.uid:
+        now = datetime.now()
+        start = now - timedelta(days=365)
+        end = now + timedelta(days=365)
+        candidates = query_events(cal_url, start, end)
+        target = None
+        for ev in candidates:
+            if ev.get('uid') == args.uid:
+                target = ev
+                break
+        if not target:
+            print(f"Event with UID {args.uid} not found.", file=sys.stderr)
+            sys.exit(1)
+        href = target['href']
+        etag = target['etag']
+        ical_text = make_request(f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href, method='GET')
+        ev_data = parse_ical_event(ical_text)
+    else:
+        if not args.summary or not args.date:
+            print("Need either --uid or (--summary and --date) to identify event.", file=sys.stderr)
+            sys.exit(1)
+        target_date = date.fromisoformat(args.date)
+        start_dt = datetime.combine(target_date, datetime.min.time())
+        end_dt = datetime.combine(target_date + timedelta(days=1), datetime.min.time())
+        candidates = query_events(cal_url, start_dt, end_dt, search=args.summary)
+        if not candidates:
+            print(f"Event not found on {args.date} with summary containing '{args.summary}'.", file=sys.stderr)
+            sys.exit(1)
+        if len(candidates) > 1:
+            print(f"Multiple matches; narrow search or use --uid.", file=sys.stderr)
+            sys.exit(1)
+        ev_data = candidates[0]
+        href = ev_data['href']
+        etag = ev_data['etag']
+        ical_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+        ical_text = make_request(ical_url, method='GET')
+        ev_data = parse_ical_event(ical_text)
+    if args.set_summary is not None:
+        ev_data['summary'] = args.set_summary
+    if args.set_start:
+        ev_data['start'] = datetime.fromisoformat(args.set_start)
+    if args.set_end:
+        ev_data['end'] = datetime.fromisoformat(args.set_end)
+    if args.set_recurrence is not None:
+        ev_data['rrule'] = args.set_recurrence if args.set_recurrence else None
+    new_ical = ical_dump(ev_data)
+    update_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+    try:
+        make_request(update_url, method='PUT', body=new_ical, etag=etag)
+        print(f"Updated event: {ev_data.get('summary')}")
+    except Exception as e:
+        print(f"Failed to update: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def cmd_delete(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    if args.uid:
+        now = datetime.now()
+        start = now - timedelta(days=365)
+        end = now + timedelta(days=365)
+        candidates = query_events(cal_url, start, end)
+        target = None
+        for ev in candidates:
+            if ev.get('uid') == args.uid:
+                target = ev
+                break
+        if not target:
+            print(f"Event with UID {args.uid} not found.", file=sys.stderr)
+            sys.exit(1)
+        href = target['href']
+        etag = target['etag']
+    elif args.date and args.summary:
+        target_date = date.fromisoformat(args.date)
+        start_dt = datetime.combine(target_date, datetime.min.time())
+        end_dt = datetime.combine(target_date + timedelta(days=1), datetime.min.time())
+        candidates = query_events(cal_url, start_dt, end_dt, search=args.summary)
+        if not candidates:
+            print("Event not found.", file=sys.stderr)
+            sys.exit(1)
+        if len(candidates) > 1:
+            print("Multiple matches; use --uid.", file=sys.stderr)
+            sys.exit(1)
+        target = candidates[0]
+        href = target['href']
+        etag = target['etag']
+    else:
+        print("Need --uid or both --date and --summary.", file=sys.stderr)
+        sys.exit(1)
+    delete_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+    try:
+        make_request(delete_url, method='DELETE', etag=etag)
+        print(f"Deleted event: {target.get('summary')}")
+    except Exception as e:
+        print(f"Failed to delete: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def cmd_exception(args):
+    cal_url = get_calendar_url_by_name(args.calendar)
+    now = datetime.now()
+    start = now - timedelta(days=365)
+    end = now + timedelta(days=365*5)
+    candidates = query_events(cal_url, start, end)
+    target = None
+    for ev in candidates:
+        if ev.get('uid') == args.uid:
+            target = ev
+            break
+    if not target:
+        print(f"Event with UID {args.uid} not found.", file=sys.stderr)
+        sys.exit(1)
+    href = target['href']
+    etag = target['etag']
+    ical_url = f"{NEXTCLOUD_URL}{href}" if href.startswith('/') else href
+    ical_text = make_request(ical_url, method='GET')
+    master = extract_master_event(ical_text, args.uid)
+    if not master:
+        print(f"Master event for UID {args.uid} not found.", file=sys.stderr)
+        sys.exit(1)
+
+    master_dtstart, dtstart_params = master.get('DTSTART', (None, {}))
+    master_dtend, dtend_params = master.get('DTEND', (None, {}))
+    master_summary = master.get('SUMMARY', ('', {}))[0]
+    master_description = master.get('DESCRIPTION', ('', {}))[0]
+    master_sequence = master.get('SEQUENCE', ('0', {}))[0] or '0'
+
+    if not master_dtstart:
+        print("Master event missing DTSTART.", file=sys.stderr)
+        sys.exit(1)
+
+    tzid = dtstart_params.get('TZID')
+    # Recurrence-id uses original instance datetime (same time-of-day as master)
+    if master_dtstart.endswith('Z'):
+        recurrence_id = f"{args.date.replace('-', '')}T{master_dtstart[9:15]}Z"
+    else:
+        time_part = master_dtstart[9:15] if 'T' in master_dtstart else '000000'
+        recurrence_id = f"{args.date.replace('-', '')}T{time_part}"
+
+    start_dt = datetime.fromisoformat(f"{args.date} {args.start}")
+    end_dt = datetime.fromisoformat(f"{args.date} {args.end}")
+    start_str = format_ical_date(start_dt)
+    end_str = format_ical_date(end_dt)
+
+    seq = 0
+    try:
+        seq = int(master_sequence)
+    except ValueError:
+        seq = 0
+    seq += 1
+
+    dtstamp = datetime.now(timezone.utc).strftime('%Y%m%dT%H%M%SZ')
+
+    exception_lines = [
+        'BEGIN:VEVENT',
+        f"UID:{args.uid}",
+        f"DTSTAMP:{dtstamp}",
+        f"SEQUENCE:{seq}",
+    ]
+
+    if tzid:
+        exception_lines.append(f"RECURRENCE-ID;TZID={tzid}:{recurrence_id}")
+        exception_lines.append(f"DTSTART;TZID={tzid}:{start_str}")
+        exception_lines.append(f"DTEND;TZID={tzid}:{end_str}")
+    else:
+        exception_lines.append(f"RECURRENCE-ID:{recurrence_id}")
+        exception_lines.append(f"DTSTART:{start_str}")
+        exception_lines.append(f"DTEND:{end_str}")
+
+    if master_summary:
+        exception_lines.append(f"SUMMARY:{master_summary}")
+    if master_description:
+        exception_lines.append(f"DESCRIPTION:{master_description}")
+    exception_lines.append('END:VEVENT')
+
+    new_ical = insert_exception(ical_text, exception_lines)
+    try:
+        make_request(ical_url, method='PUT', body=new_ical, etag=etag)
+        print(f"Created exception for UID {args.uid} on {args.date}")
+    except Exception as e:
+        print(f"Failed to create exception: {e}", file=sys.stderr)
+        sys.exit(1)
+
+
+def cmd_test(args):
+    missing = []
+    if not NEXTCLOUD_URL: missing.append("NEXTCLOUD_URL")
+    if not NEXTCLOUD_USER: missing.append("NEXTCLOUD_USER")
+    if not NEXTCLOUD_PASSWORD: missing.append("NEXTCLOUD_PASSWORD")
+    if not CALDAV_PRINCIPAL: missing.append("CALDAV_PRINCIPAL")
+    if missing:
+        print("Missing environment variables: " + ", ".join(missing))
+        sys.exit(1)
+    try:
+        get_calendar_home()
+        print("Connection successful. Calendars available:")
+        for cal in get_calendars():
+            print(f"- {cal['name']}")
+    except Exception as e:
+        print(f"Connection failed: {e}")
+        sys.exit(1)
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Unified Nextcloud CalDAV CLI')
+    sub = parser.add_subparsers(dest='cmd', required=True)
+
+    sub.add_parser('list', help='List calendars').set_defaults(func=cmd_list)
+
+    ev = sub.add_parser('events', help='View events')
+    ev.add_argument('--calendar', help='Calendar name (default: first)')
+    grp = ev.add_mutually_exclusive_group()
+    grp.add_argument('--today', action='store_true')
+    grp.add_argument('--date', help='Specific date YYYY-MM-DD')
+    grp.add_argument('--start', help='Start datetime ISO')
+    ev.add_argument('--end', help='End datetime ISO (with --start)')
+    ev.add_argument('--search', help='Text search in summary/description')
+    ev.set_defaults(func=cmd_events)
+
+    add = sub.add_parser('add', help='Add event')
+    add.add_argument('--calendar', help='Calendar name')
+    add.add_argument('--summary', required=True, help='Event title')
+    add.add_argument('--start', required=True, help='Start datetime ISO (YYYY-MM-DD HH:MM:SS)')
+    add.add_argument('--end', help='End datetime ISO (default: start + 1h)')
+    add.add_argument('--recurrence', help='RRULE string (e.g., FREQ=WEEKLY;BYDAY=MO)')
+    add.add_argument('--description', help='Event description')
+    add.set_defaults(func=cmd_add)
+
+    upd = sub.add_parser('update', help='Update existing event')
+    upd.add_argument('--calendar', help='Calendar name')
+    idgrp = upd.add_mutually_exclusive_group(required=True)
+    idgrp.add_argument('--uid', help='Event UID to update')
+    idgrp.add_argument('--summary', help='Event title (partial) match')
+    upd.add_argument('--date', help='Date of event (required with --summary)')
+    upd.add_argument('--set-summary', help='New summary')
+    upd.add_argument('--set-start', help='New start datetime ISO')
+    upd.add_argument('--set-end', help='New end datetime ISO')
+    upd.add_argument('--set-recurrence', help='New RRULE (or empty to remove)')
+    upd.set_defaults(func=cmd_update)
+
+    delete = sub.add_parser('delete', help='Delete event')
+    delete.add_argument('--calendar', help='Calendar name')
+    delgrp = delete.add_mutually_exclusive_group(required=True)
+    delgrp.add_argument('--uid', help='Event UID to delete')
+    delgrp.add_argument('--summary', help='Event title match')
+    delete.add_argument('--date', help='Date of event (required with --summary)')
+    delete.set_defaults(func=cmd_delete)
+
+    exc = sub.add_parser('exception', help='Create exception for recurring event instance')
+    exc.add_argument('--calendar', help='Calendar name')
+    exc.add_argument('--uid', required=True, help='Event UID')
+    exc.add_argument('--date', required=True, help='Date of instance to override (YYYY-MM-DD)')
+    exc.add_argument('--start', required=True, help='New start time (HH:MM)')
+    exc.add_argument('--end', required=True, help='New end time (HH:MM)')
+    exc.set_defaults(func=cmd_exception)
+
+    sub.add_parser('test', help='Test connection and config').set_defaults(func=cmd_test)
+
+    args = parser.parse_args()
+    try:
+        args.func(args)
+    except Exception as e:
+        print(f"Error: {e}", file=sys.stderr)
+        sys.exit(1)
+
+if __name__ == '__main__':
+    main()