nsimonfr/rpi5/picoclaw/skills/caldav-calendar

<!-- vendored via `npx skills add sundial-org/awesome-openclaw-skills@caldav-calendar` (commit b80cde2) -->

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name: caldav-calendar description: Sync and query the user's personal Nextcloud calendar via CalDAV using vdirsyncer + khal. Events cached locally as .ics under ~/.local/share/vdirsyncer/calendars/. metadata: {"openclaw":{"emoji":"📅","os":["linux"],"requires":{"bins":["vdirsyncer","khal"]}}}

CalDAV Calendar (vdirsyncer + khal)

PERSONAL calendar only. This skill is wired to the user's Nextcloud (https://rpi5.gate-mintaka.ts.net:8085). Work/Trusk calendar access goes through the gog skill instead.

vdirsyncer syncs CalDAV calendars to local .ics files. khal reads and writes them. On the rpi5 both binaries come from home.packages and the configs (~/.config/vdirsyncer/config, ~/.config/khal/config) are Nix-managed in rpi5/picoclaw/picoclaw.nix; the Nextcloud password is read at sync time from /run/agenix/nextcloud-homepage-password via vdirsyncer's password.fetch.

Sync First

Always sync before querying or after making changes:

vdirsyncer sync

View Events

khal list                        # Today
khal list today 7d               # Next 7 days
khal list tomorrow               # Tomorrow
khal list 2026-01-15 2026-01-20  # Date range
khal list -a nextcloud today     # Specific calendar

Search

khal search "meeting"
khal search "dentist" --format "{start-date} {title}"

Create Events

khal new 2026-01-15 10:00 11:00 "Meeting title"
khal new 2026-01-15 "All day event"
khal new tomorrow 14:00 15:30 "Call" -a nextcloud
khal new 2026-01-15 10:00 11:00 "With notes" :: Description goes here

After creating, sync to push changes:

vdirsyncer sync

Edit Events (interactive)

khal edit is interactive — requires a TTY. Use tmux if automating:

khal edit "search term"
khal edit -a nextcloud "search term"
khal edit --show-past "old event"

Menu options:

• s → edit summary
• d → edit description
• t → edit datetime range
• l → edit location
• D → delete event
• n → skip (save changes, next match)
• q → quit

After editing, sync:

vdirsyncer sync

Delete Events

Use khal edit, then press D to delete.

Output Formats

For scripting:

khal list --format "{start-date} {start-time}-{end-time} {title}" today 7d
khal list --format "{uid} | {title} | {calendar}" today

Placeholders: {title}, {description}, {start}, {end}, {start-date}, {start-time}, {end-date}, {end-time}, {location}, {calendar}, {uid}

Caching

khal caches events in ~/.local/share/khal/khal.db. If data looks stale after syncing:

rm ~/.local/share/khal/khal.db

Initial Setup (rpi5)

On this host both configs are already Nix-managed (see rpi5/picoclaw/picoclaw.nix — home.file.".config/vdirsyncer/config" and home.file.".config/khal/config"). Do not hand-edit them; changes get overwritten on the next home-manager switch. Edit the Nix module instead.

Bootstrap, once interactively:

vdirsyncer discover   # asks y/N per Nextcloud calendar — accept the ones you want
vdirsyncer sync

Afterwards vdirsyncer sync and all khal … commands work non-interactively.

Useful paths:

• Local cache: ~/.local/share/vdirsyncer/calendars/<calendar>/*.ics
• vdirsyncer status: ~/.local/share/vdirsyncer/status/
• khal db: ~/.local/share/khal/khal.db
• Source of truth: https://rpi5.gate-mintaka.ts.net:8085/remote.php/dav/