Calendar Assistant with OpenClaw

📖 Use case: Automated scheduling, conflict resolution, and meeting management via the messaging apps you already use. Ask OpenClaw in Telegram, WhatsApp, or Slack: "What's on my calendar today?", "Schedule a call with Alex next Tuesday at 3pm," or "Do I have any conflicts this week?" The agent uses ClawHub skills (e.g. Google Calendar, Outlook) to read and create events, detect double-bookings, and send reminders-so you manage your calendar from chat without opening a calendar app. Self-hosted; your schedule stays under your control.

Overview

Calendar assistant with OpenClaw means using natural language in your preferred messaging channel to view, create, and manage calendar events. Instead of switching to Google Calendar or Outlook, you message your OpenClaw agent: "Add dentist appointment Friday 10am" or "What meetings do I have tomorrow?" The agent uses calendar skills to query and update your calendar, warn you about conflicts (e.g. "You already have a standup at 9am; should I move the dentist to 11am?"), and optionally send you reminders (e.g. "Meeting with Sarah in 15 minutes"). You can combine it with morning briefing ("Here's your day") or email management to reschedule from email invites.

What you'll learn:

  • Why use OpenClaw as a calendar assistant (vs opening a calendar app or using cloud-only assistants)
  • Prerequisites: OpenClaw, a channel, and a calendar skill (Google Calendar, Outlook, or similar)
  • Step-by-step setup: install a calendar skill, grant access, and configure the agent for scheduling and conflict checks
  • Typical commands: view day/week, create events, resolve conflicts, and get reminders
  • Best practices: scopes and permissions, privacy, and pairing with other personal productivity use cases
  • Advanced ideas: recurring events, find-free-slot logic, and meeting prep summaries

Why OpenClaw for Calendar Management?

  • One place for chat and calendar: You're already in Telegram or Slack; ask "What's my next meeting?" or "Block 2–4pm for deep work" without leaving the app. Combines well with other personal productivity flows like email and morning briefings.
  • Conflict resolution in plain language: The agent can detect overlapping events and suggest alternatives ("You have Team sync at 2pm; I can schedule the client call at 3:30pm or tomorrow 10am"). No more manual cross-checking.
  • 24/7 and proactive: Schedule a daily or morning message (e.g. "Here's your calendar for today") or get reminders before meetings. OpenClaw runs on your infrastructure so reminders work even when your phone calendar app is closed.
  • Self-hosted and private: Calendar data is accessed by your agent via official calendar APIs (OAuth); the agent runs on your machine or VPS. No need to hand your calendar to a third-party cloud assistant. See security best practices.
  • Natural language: "Move my 3pm to 4pm," "Find a 30-minute slot this week for a 1:1 with Jamie," or "Remind me 10 minutes before every meeting." The agent interprets intent and calls the calendar skill accordingly.

Prerequisites

  • OpenClaw installed and operational (quick start guide)
  • At least one messaging channel configured-e.g. Telegram, WhatsApp, or Slack (channel setup)
  • A calendar skill from ClawHub that supports your calendar provider (Google Calendar, Microsoft Outlook/Office 365, or similar). Search for "calendar," "Google Calendar," or "Outlook" in the marketplace
  • Calendar account and OAuth (or API) credentials as required by the skill-typically you authorize once and the skill stores tokens; follow the skill's documentation
  • Basic understanding of OpenClaw configuration and agent customization so you can add instructions like "always check for conflicts before creating an event"
  • Security best practices reviewed-use credential management for calendar tokens; restrict calendar scope to what the agent needs (e.g. read + write events, not full account access)

Implementation Guide

Step 1: Install and configure a calendar skill

In ClawHub, find a skill that integrates with your calendar (Google Calendar, Outlook, etc.). Install it and complete the OAuth or API setup so the agent can read and create events. Follow the skill's readme for scopes: usually "read events" and "create/update/delete events" for the calendars you want the agent to manage. Prefer the minimum scope needed. After installation, verify with a simple prompt in your channel: "What's on my calendar today?" and confirm you see real events (or an empty list).

Step 2: Configure the agent for scheduling and conflict checks

In your agent's system prompt or via agent customization, add instructions so the agent:

  • Always checks for conflicts before creating a new event (query existing events in the same time range and warn or suggest alternatives if there's an overlap).
  • Uses clear, short replies (e.g. "Added: Team standup, Mon 9:00–9:30" or "Conflict: you have 'Client call' at 2pm. I can add 'Dentist' at 4pm or tomorrow 10am-which do you prefer?").
  • Confirms before creating or deleting events if you want a safety check, or auto-creates if you prefer speed (configurable by your instructions).

Optionally use persistent memory so the agent remembers your preferences (e.g. "prefer morning meetings" or "default reminder 10 minutes before").

Step 3: Typical commands to use in chat

Once the skill and agent are set up, you can use natural language such as:

  • View: "What's on my calendar today?" / "What meetings do I have this week?" / "What's my next event?"
  • Create: "Schedule a meeting with Sarah next Tuesday at 2pm" / "Block 2–4pm tomorrow for deep work" / "Add dentist Friday 10am"
  • Conflict check: "Do I have any conflicts this week?" / "Can I add a 1-hour meeting tomorrow at 3pm?" (agent checks and reports overlaps)
  • Reschedule: "Move my 3pm meeting to 4pm" / "Cancel the standup tomorrow"
  • Find time: "Find a 30-minute slot this week for a 1:1 with Jamie" (agent can list free slots from the calendar)

Adjust phrasing to match how your agent is instructed; the above are common patterns.

Step 4: Optional-reminders and daily digest

To get proactive reminders or a daily overview:

  • Meeting reminders: Some calendar skills support reminders (e.g. "remind me 10 minutes before each meeting"). Enable that in the skill or agent instructions. Alternatively, use a scheduled task (cron or OpenClaw schedule) that runs every 15 minutes, asks the agent "What meetings start in the next 15 minutes?" and posts a message to your channel (e.g. "In 10 min: Team standup").
  • Morning digest: Combine with morning briefing: a scheduled task sends a prompt like "Summarize my calendar for today" and the agent replies with your day's events in one message.

Ensure scheduled tasks use secure, internal triggers; see network isolation.

Step 5: Test and refine

Test with real commands: create an event, ask for conflicts, reschedule, and (if enabled) trigger a reminder. If the agent creates events in the wrong calendar or time zone, adjust the skill config or agent instructions. For recurring issues, check the skill's documentation and the troubleshooting guide.

Best Practices

  • Minimal calendar scope: Grant the skill only the scopes it needs (read/write events for the calendars you use). Avoid full account or admin access. Store OAuth tokens per credential management.
  • Confirm destructive actions: Instruct the agent to confirm before deleting or moving many events, to avoid accidental bulk changes.
  • Conflict checks by default: Make "check for conflicts before adding" a default behavior so you don't double-book.
  • Time zones: Ensure the skill and agent use your working time zone (or the event's time zone) so "tomorrow 3pm" is interpreted correctly.
  • Combine with other use cases: Use with email management to accept or propose times from email invites, or with personal CRM to schedule follow-ups with contacts.
  • Community: Share your setup or get help in the Discord community; others may have shared prompts or skill configs for your calendar provider.

Common Issues & Solutions

Issue Cause Solution
Agent says "no calendar" or "skill not available" Calendar skill not installed or not authorized Install the skill from ClawHub, complete OAuth/API setup, and ensure the agent has access to the skill (tool list / scope). Check openclaw status and skill logs.
Wrong calendar or wrong events shown Skill configured for a different calendar or account In the skill config, select the correct calendar ID or account. Some skills support multiple calendars-specify which one(s) the agent should use.
Events created in wrong time zone Skill or agent using UTC or different time zone Set time zone in skill config or in agent instructions (e.g. "Assume all times are America/New_York unless specified").
No conflict detection Agent not instructed to check before creating Add to system prompt: "Before creating any new event, query existing events in that time range and warn about conflicts or suggest alternatives."
OAuth token expired or revoked Token refresh failed or user revoked access Re-authorize the calendar skill (repeat OAuth flow). Check skill docs for token refresh; protect credentials per credential management.

Need more help? See our complete troubleshooting guide and skills issues.

Advanced Tips

  • Find-free-slot logic: Instruct the agent to "find the next free 30/60-minute slot in the next 5 days" by querying events and computing gaps; then suggest 2–3 options so you can pick one and have the agent create the event.
  • Meeting prep summaries: Before important meetings, ask "What's the context for my 2pm with Sarah?" and have the agent pull from memory or past messages (if you use a CRM or notes skill) to summarize recent context or action items.
  • Recurring events: Many calendar APIs support recurring events; if your skill supports it, you can say "Add weekly team sync every Monday 9am" and let the agent create the series.
  • Multiple calendars: If you use work and personal calendars, configure the skill for both and instruct the agent which calendar to use by default (e.g. "Personal by default; say 'work' to use work calendar").

For expert-level configuration, see our advanced configuration guide and creating custom skills if you need a custom calendar integration.

Related Resources

Next Steps

After setting up your calendar assistant, consider: