Best OpenClaw Skills for Calendar & Scheduling: Google Calendar, CalDAV, Apple, and More
Calendar management is one of the most-requested integrations for AI agents. Whether you're scheduling meetings, syncing events across platforms, or extracting appointments from emails, OpenClaw has a growing library of calendar skills to handle it. This guide organizes all of them by workflow stage.
Note: Install and download figures in text descriptions reflect stats at the time of writing and may be outdated. All skill tables are live — they fetch current data from the ClawHub database on every page load. Treat table values as authoritative.
Data Snapshot
| Metric | Value |
|---|---|
| Skills covered | 46 |
| Workflow stages | 6 |
| Top by downloads | caldav-calendar ( downloads) |
| Top by installs | calendar ( installs) |
| With install records | 36 |
| Zero installs | 10 |
The standout data point: caldav-calendar leads by downloads at 26,000+, while the generic calendar skill leads by installs at 301. Protocol-level CalDAV access is clearly what power users want, while simpler calendar manipulation (create event, check schedule) is what most people actually run.
一、Google Calendar
Google Calendar dominates the ecosystem. Multiple skills cover it from different angles — CLI-based access, REST API, and Google Workspace admin-level tools.
gcalcli-calendar (14,500+ downloads, 114 installs) is the most-used Google Calendar skill, running the popular gcalcli CLI with opinionated defaults: today-only agenda, bounded date queries to prevent runaway output, and timezone-aware formatting. google-calendar and google-calendar-api offer direct REST API access — the latter uses managed OAuth, which removes credential handling from the agent. gog-calendar adds cross-calendar aggregation via gogcli, useful when users have multiple Google accounts.
二、CalDAV / ICS Universal Protocol
CalDAV is the standard protocol behind iCloud, Google Calendar, Fastmail, Nextcloud, and most self-hosted calendar servers. Skills at this layer work across all of them without platform-specific bindings.
caldav-calendar is the most-downloaded calendar skill on the platform (26,253 downloads, 250 installs) — and it's not close. It syncs and queries any CalDAV server: iCloud, Google, Fastmail, Nextcloud, Radicale. The breadth of supported backends explains its lead. icalendar-sync focuses on ICS file handling for scenarios where you need to import/export .ics events without a live server connection. yandex-calendar and icloud-caldav are protocol-identical but pre-configured for their respective providers.
三、Apple Calendar
Apple Calendar on macOS is a distinct integration target — it stores events locally and syncs to iCloud. Three separate AppleScript/CLI skills cover it, each with a slightly different surface area.
macos-calendar (7,287 downloads, 78 installs) uses AppleScript to create, list, and manage macOS Calendar events directly — no network required if events are local-only. accli covers the same surface via accli, a dedicated CLI. apple-calendar-macos wraps multiple approaches (apple-calendar-cli, CalDAV, Outlook) under one skill for multi-calendar power users. Three separate tools serving essentially the same underlying system is unusual — it reflects how many different ways people try to automate Apple Calendar before finding one that fits their setup.
四、Enterprise & Team Calendars
Enterprise platforms ship their own calendar APIs, usually requiring platform-specific auth flows and returning proprietary data formats.
lark-calendar (6,649 downloads, 65 installs) is the top enterprise calendar skill — Feishu/Lark's calendar is a first-class tool in Chinese workplaces and the integration reflects that. zoho-calendar (12,015 downloads, 6 installs) has surprisingly high downloads for its zero-installs-nearly record, suggesting Zoho users are evaluating it but running into auth or configuration friction. outlook-calendar covers Microsoft 365 via the Graph API — the Chinese-language summary indicates most current users are in Chinese enterprise environments, likely because English-language Outlook users have more mature native integrations already.
五、Meeting Scheduling & Booking
Scheduling tools focus on availability matching, booking links, and meeting creation — often the last mile between a conversation and a confirmed event on the calendar.
calendly-api (16,753 downloads, 12 installs) is the second-most-downloaded calendar skill overall, trailing only caldav-calendar. It provides managed OAuth access to Calendly's full API: event types, scheduled events, invitee data, availability windows. The download/install gap (16k vs 12) is typical for Managed OAuth skills — they require provider setup before the first run. ai-meeting-scheduling takes a different approach: given a group of participants, it finds overlapping availability slots without requiring any calendar API credentials at all. nylas-email-calendar provides unified email + calendar access across Gmail and Outlook in a single skill.
六、Smart Integration & Automation
This stage covers skills that do something with calendar data rather than just read or write it — parsing events from emails, building daily briefings, generating content schedules.
email-to-calendar (5,470 downloads, 31 installs) extracts calendar events and action points from forwarded emails and stores them in CalDAV — the highest-installs skill in this stage by a wide margin. briefing assembles a daily digest from calendar, todos, and weather — a common "morning routine" agent pattern. fcalendar-skill (436 downloads, 57 installs) handles Chinese and English natural-language time expressions ("下午三点", "next Tuesday at 2pm") and resolves them to exact timestamps — its install rate is exceptionally high for its download count, suggesting strong retention among the users who do install it.
Workflow Pairing Guide
| My situation | Recommended combination |
|---|---|
| Google Calendar, want CLI-style access | gcalcli-calendar |
| Multiple calendar providers (iCloud + Google + Fastmail) | caldav-calendar |
| Apple Calendar on macOS, no cloud sync needed | macos-calendar |
| Feishu/Lark enterprise environment | lark-calendar + feishu-calendar-advanced |
| Booking/scheduling links (Calendly-style) | calendly-api |
| Extract meeting details from email | email-to-calendar |
| Daily AI briefing with calendar | briefing |
| Chinese time parsing in agent workflows | fcalendar-skill |
A Few Observations
CalDAV wins on downloads because it solves the fragmentation problem. Every major calendar provider supports CalDAV, so one skill covers iCloud users, Google users, Nextcloud self-hosters, and Fastmail users identically. This is why caldav-calendar's 26k downloads dwarfs any single-platform skill.
Calendly has more download interest than install follow-through. The API skill's 16k downloads against 12 installs reflects managed OAuth setup friction — users need to create a Calendly developer app and get credentials before the skill works. Expect install numbers to catch up as the OAuth onboarding improves.
Apple Calendar needs multiple tools to cover one platform. Three separate skills (macos-calendar, accli, apple-calendar-cli) all target essentially the same local calendar database via different entry points. This fragmentation is a signal that no single approach fully satisfies all macOS user workflows — some want AppleScript, some want CLI, some want CalDAV passthrough.
Chinese enterprise calendars are underrepresented in installs. Lark, Feishu, and DingTalk skills have download numbers comparable to Outlook, but notably lower installs. Chinese enterprise environments tend to have stricter network and auth controls, which may raise the setup barrier for agent-based calendar access.
Data from ClawHub platform as of April 2026. Find more skills at clawhub-skills.com.