when-clock-skill (OpenClaw Skill Description)#

1. Skill Overview#

• Entry script: when-clock-skill.py
• Runtime: Python 3.9+, standard library only, no pip required
• Target devices: WHEN / WHEN Voice clock (LAN HTTP, auto-detected)
• Config file: config.json in script directory (fill devices array with id and clock_ip)

2. Invocation Format#

text

python when-clock-skill.py --mode <mode> --device-id <device_id> [options...]

--device-id defaults to default (for backward compatibility with single-device config).

3. Mode Quick Reference#

ModeDescriptionRequired ArgsDevice SupportchimeVoice time announcement—WHEN Voice onlyweatherVoice weather broadcast—WHEN Voice onlyget_alarmQuery all alarms—Bothset_alarmAdd new alarm--alarm-timeBothedit_alarmModify alarm (partial update)--alarm-indexBothdelete_alarmDelete alarm--alarm-indexBothset_timerCountdown timer (single alarm)--timer-offsetBoth

4. Mode Details#

4.1 chime — Voice Time Announcement (WHEN Voice only)#

Announces current time. WHEN devices do not support this mode.

bash

python when-clock-skill.py --mode chime --device-id device1
python when-clock-skill.py --mode chime --device-id device1 --volume 20

Optional: --volume 1~30 (uses device current volume if not specified)

Output:

json

{"ok": true, "mode": "chime", "action": "voice_announce_preview", "result": "success", "status": 0, "message": "succ"}

---

4.2 weather — Weather Broadcast (WHEN Voice only)#

WHEN devices do not support this mode.

Note: Weather broadcast currently only supports China region. More regions will be added in future updates.

bash

python when-clock-skill.py --mode weather --device-id device1
python when-clock-skill.py --mode weather --device-id device1 --volume 20

Output:

json

{"ok": true, "mode": "weather", "action": "voice_weather_preview", "result": "success", "status": 0, "message": "succ"}

---

4.3 get_alarm — Query Alarm List#

bash

python when-clock-skill.py --mode get_alarm --device-id device1

WHEN device alarm entries do not include volume field.

WHEN Voice output example (with volume):

json

{
  "ok": true,
  "mode": "get_alarm",
  "alarm_count": 2,
  "alarms": [
    {"index": 1, "mode": "Workday", "time": "07:30:00", "ring": "Reveille", "ring_duration_level": "2min", "volume": 20},
    {"index": 2, "mode": "Weekly", "time": "09:00:00", "ring": "Weather(1x)", "ring_duration_level": "30S", "volume": 15, "active_days": ["Mon", "Wed"]}
  ]
}

alarms[].index is the --alarm-index value needed by edit_alarm / delete_alarm.

---

4.4 set_alarm — Add New Alarm#

bash

# Once (default)
python when-clock-skill.py --mode set_alarm --device-id device1 --alarm-time 07:30

# Workdays
python when-clock-skill.py --mode set_alarm --device-id device1 --alarm-mode workday --alarm-time 08:00

# Weekly on specific days
python when-clock-skill.py --mode set_alarm --device-id device1 --alarm-mode weekly --alarm-week 1,2,3,4,5 --alarm-time 08:10

# WHEN Voice - full params
python when-clock-skill.py --mode set_alarm --device-id device1 --alarm-time 07:30 --alarm-ring 5 --alarm-delay 6 --alarm-volume 20

# WHEN - ring only 1-6
python when-clock-skill.py --mode set_alarm --device-id device1 --alarm-time 07:30 --alarm-ring 3

Optional params (use config.json alarm_defaults if not specified):

• --alarm-mode: once/ weekly/ workday/ restday/ off, default once
• --alarm-week: required for weekly, e.g. 1,2,3,4,5 or Mon,Wed,Fri
• --alarm-ring: ring ID (WHEN Voice: 150, WHEN: 16 beep1-beep6)
• --alarm-delay: duration level (0-based, 0~11)
• --alarm-volume: volume 1~30 (WHEN Voice only)

Maximum 10 alarms per device.

Output:

json

{"ok": true, "mode": "set_alarm", "action": "add_alarm", "result": "success", "status": 0, "message": "succ", "alarm_count": 3, "added_alarm": {"mode": "Once", "time": "07:30:00", "ring": "Reveille", "ring_duration_level": "2min", "volume": 20, "active_days": []}}

---

4.5 edit_alarm — Modify Alarm#

Only specified fields are updated; other fields keep original values.

bash

# Change time only
python when-clock-skill.py --mode edit_alarm --device-id device1 --alarm-index 1 --alarm-time 07:45

# Change time and volume (WHEN Voice)
python when-clock-skill.py --mode edit_alarm --device-id device1 --alarm-index 2 --alarm-time 08:30 --alarm-volume 25

# Change to workday mode
python when-clock-skill.py --mode edit_alarm --device-id device1 --alarm-index 1 --alarm-mode workday

--alarm-index is required (use get_alarm to check indices first).

Output:

json

{"ok": true, "mode": "edit_alarm", "action": "update_alarm", "result": "success", "status": 0, "message": "succ", "alarm_count": 3, "updated_alarm": {"index": 1, "mode": "Once", "time": "07:45:00", "ring": "Reveille", "ring_duration_level": "2min", "volume": 20, "active_days": []}}

---

4.6 delete_alarm — Delete Alarm#

bash

python when-clock-skill.py --mode delete_alarm --device-id device1 --alarm-index 2

--alarm-index is required.

Output:

json

{"ok": true, "mode": "delete_alarm", "action": "remove_alarm", "result": "success", "status": 0, "message": "succ", "alarm_count": 2, "removed_alarm": {"index": 2, "mode": "Once", "time": "09:00:00", "ring": "Weather(1x)", "ring_duration_level": "30S", "volume": 15, "active_days": []}}

---

4.7 set_timer — Countdown Timer#

Takes current local time + offset, writes as a single-shot alarm to device.

bash

# 5 minutes later (uses config default ring/volume)
python when-clock-skill.py --mode set_timer --device-id device1 --timer-offset 5m

# 1 hour 30 minutes later
python when-clock-skill.py --mode set_timer --device-id device1 --timer-offset 1h30m

# 90 seconds, custom ring and volume (WHEN Voice)
python when-clock-skill.py --mode set_timer --device-id device1 --timer-offset 90s --alarm-ring 5 --alarm-volume 20

--timer-offset format: 5m, 1h, 1h30m, 90s, 1h30m20s. Plain number treated as minutes.

Output:

json

{"ok": true, "mode": "set_timer", "action": "add_timer", "result": "success", "status": 0, "message": "succ", "alarm_count": 3, "timer": {"offset": "5m", "offset_seconds": 300, "trigger_at": "14:35:00", "ring": "Reveille", "ring_duration_level": "2min", "volume": 20}}

---

5. Ring Tone Reference#

WHEN Voice (50 tones, common)#

IDNameIDName1Weather(1x)2Weather(2x)3Weather(3x)4Beep-15Reveille6Rest Call43Morning44Evening49Chinese-style music-150Chinese-style music-2

WHEN (6 tones)#

IDName1beep12beep23beep34beep45beep56beep6

Full WHEN Voice list in config.json alarm_defaults_note.ring_id_name.

6. Important Conventions#

• Alarm index ( --alarm-index) is 1-based, starting from 1
• Ring ID ( --alarm-ring) is 1-based, internally converted to device 0-based
• Volume range 1~30, sent as volume-1 ( WHEN Voice only)
• WHEN device has no volume parameter, ring fixed to beep1-beep6
• Maximum 10 alarms per device
• config.json devices array must have valid id and clock_ip, or script exits with code 2
• Check success: prefer ok == true, fallback to status == 0
• Errors to stderr, normal JSON to stdout

7. Exit Codes#

CodeMeaning0Success1Device returned failure status2Argument / config / response format error3HTTP error4Network error