Calendly Skill

Interact with Calendly scheduling via MCP-generated CLI.

Note: This CLI includes schedule-event and reschedule-event with strict input validation and MCP-first execution. If MCP scheduling is unavailable, each command falls back to Calendly REST.

Quick Start

# Make the launcher available on PATH
bun run install:path
export PATH="$HOME/.local/bin:$PATH"
command -v calendly

# Get your Calendly profile (returns user URI)
calendly get-current-user

# List RECENT events (always use --min-start-time for recent queries!)
calendly list-events \
  --user-uri "<YOUR_USER_URI>" \
  --min-start-time "2026-01-20T00:00:00Z" \
  --max-start-time "2026-01-27T23:59:59Z"

# Get event details
calendly get-event --event-uuid <UUID>

# Cancel an event
calendly cancel-event --event-uuid <UUID> --reason "Rescheduling needed"

Default install target: ~/.local/bin/calendly. Override it with bun run install:path -- --bin-dir /your/bin/dir.

Available Commands

User Info

• get-current-user - Get authenticated user details

Events

• list-events - List scheduled events (requires --user-uri); add --include-invitees for expand + bounded fallback invitee hydration
• list-events-with-invitees - Compatibility alias for include-invitees path
• get-event - Get event details (requires --event-uuid)
• list-event-types - List schedulable event types (requires --user-uri or --organization-uri; optional --count)
• get-event-type - Get event type details (requires --event-type-uri)
• update-event-type - Update mutable event type metadata (--event-type-uri primary, --event-type-uuid alias, supports --dry-run)
• get-event-type-availability - Get available slots for an event type (--event-type-uri, --start-time, --end-time; optional --timezone)
• schedule-event - Schedule a meeting by booking an invitee into an event type
• reschedule-event - Reschedule an existing meeting to a new start time using event/invitee identifiers
• cancel-event - Cancel an event (requires --event-uuid, optional --reason)

Invitees

• list-event-invitees - List invitees for an event (requires --event-uuid)
• batch-event-invitees - Batch lookup invitees for multiple events (repeat --event-uri)
• search-invitees - Search events by invitee email across paginated results

Team Events

• list-team-events - List scheduled events for a team by scanning organization memberships and member calendars

Organization

• list-organization-memberships - List organization memberships

Webhooks

• list-webhook-subscriptions - List webhook subscriptions
• get-webhook-subscription - Get webhook subscription details
• create-webhook-subscription - Create webhook subscription
• delete-webhook-subscription - Delete webhook subscription

Configuration

API key can be stored in your environment or .env file:

export CALENDLY_API_KEY="<your-pat-token>"
# Or in legacy ~/.moltbot/.env / ~/.clawdbot/.env

Get your Personal Access Token from: https://calendly.com/integrations/api_webhooks

Usage in OpenClaw

When user asks about:

• "What meetings do I have?" → list-events with --min-start-time (use recent date!)
• "Show me all demos this week with who booked them" → list-events --include-invitees (expand first; fallback hydrate only when needed)
• "Cancel my 2pm meeting" → Find with list-events (time-filtered), then cancel-event
• "Who's attending X meeting?" → list-events --include-invitees (with fallback) or list-event-invitees

Note: First time, run calendly get-current-user to obtain your User URI.

Getting Your User URI

Run calendly get-current-user to get your user URI. Example:

{
  "resource": {
    "uri": "https://api.calendly.com/users/<YOUR_USER_UUID>",
    "scheduling_url": "https://calendly.com/<your-username>"
  }
}

Examples

# List next 10 events
calendly list-events \
  --user-uri "<YOUR_USER_URI>" \
  -o json | jq .

# List events with invitees (expand first; bounded fallback)
calendly list-events \
  --user-uri "<YOUR_USER_URI>" \
  --include-invitees \
  --max-invitee-fetches 25 \
  --status active

# List team events for a shared calendar/org scope
calendly list-team-events \
  --organization-uri "<YOUR_ORG_URI>" \
  --min-start-time "2026-01-20T00:00:00Z" \
  --max-start-time "2026-01-27T23:59:59Z" \
  --include-invitees

# Get event details
calendly get-event \
  --event-uuid "<EVENT_UUID>" \
  -o json

# Get event type details
calendly get-event-type \
  --event-type-uri "https://api.calendly.com/event_types/<EVENT_TYPE_UUID>" \
  -o json

# Update event type metadata
calendly update-event-type \
  --event-type-uri "https://api.calendly.com/event_types/<EVENT_TYPE_UUID>" \
  --duration 30 \
  --active true \
  -o json

# Dry-run without applying
calendly update-event-type \
  --event-type-uuid "<EVENT_TYPE_UUID>" \
  --description "Updated invitee-facing description" \
  --dry-run \
  -o json

# Get event type availability
calendly get-event-type-availability \
  --event-type-uri "https://api.calendly.com/event_types/<EVENT_TYPE_UUID>" \
  --start-time "2026-03-01T00:00:00Z" \
  --end-time "2026-03-02T00:00:00Z" \
  --timezone "America/New_York" \
  -o json

# Schedule an event (requires paid plan)
calendly schedule-event \
  --event-type "https://api.calendly.com/event_types/<EVENT_TYPE_UUID>" \
  --start-time "2099-03-01T15:00:00Z" \
  --invitee-email "invitee@example.com" \
  --invitee-name "Invitee Name" \
  --invitee-timezone "America/New_York" \
  --questions '{"Company":"Acme"}' \
  -o json

# Reschedule an event (requires paid plan)
calendly reschedule-event \
  --event-uuid "<EVENT_UUID>" \
  --new-start-time "2099-03-02T16:00:00Z" \
  --reason "Conflict with another meeting" \
  -o json

# List event types
calendly list-event-types \
  --organization-uri "https://api.calendly.com/organizations/<ORG_UUID>" \
  --count 20 \
  -o json

# Batch invitee lookup for multiple events
calendly batch-event-invitees \
  --event-uri "https://api.calendly.com/scheduled_events/<EVENT_UUID_1>" \
  --event-uri "https://api.calendly.com/scheduled_events/<EVENT_UUID_2>" \
  --max-invitee-fetches 25 \
  -o json

# Cancel with reason
calendly cancel-event \
  --event-uuid "<EVENT_UUID>" \
  --reason "Rescheduling due to conflict"

# Create webhook subscription (with signing key)
calendly create-webhook-subscription \
  --url "https://example.com/calendly/webhooks" \
  --events "invitee.created,invitee.canceled" \
  --organization-uri "https://api.calendly.com/organizations/<ORG_UUID>" \
  --scope organization \
  --signing-key "$CALENDLY_WEBHOOK_SIGNING_KEY"

# List webhook subscriptions
calendly list-webhook-subscriptions \
  --organization-uri "https://api.calendly.com/organizations/<ORG_UUID>"

# Get webhook subscription details
calendly get-webhook-subscription \
  --webhook-subscription-uri "https://api.calendly.com/webhook_subscriptions/<SUBSCRIPTION_UUID>"

# Delete webhook subscription
calendly delete-webhook-subscription \
  --webhook-subscription-uri "https://api.calendly.com/webhook_subscriptions/<SUBSCRIPTION_UUID>"

Webhook signing secret guidance:

• Keep CALENDLY_WEBHOOK_SIGNING_KEY in secure runtime config (env/secret manager), never committed.
• Use a long random value and rotate it if exposed.
• Verify Calendly webhook signatures in your receiver with the same secret used at subscription creation.
• If using --scope user, include --user-uri "https://api.calendly.com/users/<USER_UUID>".

Scheduling Requirements

schedule-event uses the upstream calendly-mcp-server scheduling signature:

• Required: event_type, start_time, invitee_email, invitee_timezone
• Optional: invitee_name, invitee_first_name, invitee_last_name, invitee_phone, location_kind, location_details, event_guests, questions_and_answers, utm_source, utm_campaign, utm_medium

Validation behavior:

• start_time must be ISO-8601 and in the future
• event_type must be a Calendly event type URI
• invitee and guest emails must be valid
• timezone must be valid IANA timezone
• custom questions must be valid JSON object/array

reschedule-event accepts flexible identifiers and normalizes them before execution:

• Identifier source (at least one required): --event-uuid/--event-uri or --invitee-uuid/--invitee-uri or --reschedule-url
• Required: --new-start-time (ISO-8601, future)
• Optional: --new-end-time (must be after new start), --event-type (event type URI), --reason
• When --new-end-time or --event-type is omitted, CLI derives values from the current scheduled event during REST fallback
• REST fallback payload maps to Calendly rescheduling fields: event_type, event_start_time, event_end_time, and optional reason

update-event-type updates only explicitly provided mutable fields:

• Identifier: --event-type-uri or --event-type-uuid
• Mutable fields: --name, --description, --duration, --active, --secret
• Validation: duration must be an integer between 15 and 480; boolean fields require explicit true or false
• Safety: --dry-run returns the normalized patch payload without sending MCP or REST requests

Plan and availability notes:

• Paid Calendly plan (Standard or higher) is required; free plans return 403.
• To reduce booking conflicts, call get-event-type-availability first and pass one returned slot start_time.
• For live smoke tests of update-event-type, use a disposable event type and restore the original field value after confirming the update succeeded.

Important: Time Filtering

Always use --min-start-time when querying recent events!

Date bounds are validated:

• --min-start-time and --max-start-time must be ISO-8601 timestamps (for example 2026-01-20T00:00:00Z)
• when both are provided, min-start-time must be less than or equal to max-start-time
• validation is the same for normal flags and --raw input

The API returns events oldest-first by default and doesn't support pagination via CLI. Without a time filter, you'll get events from years ago.

For invitees with events, use list-events --include-invitees. It uses expand=invitees first and only falls back per event when invitees_counter.active > 0 but embedded invitees are missing. Control fallback cost with:

• --hydrate-invitees <true|false> (default true for include-invitees path)
• --max-invitee-fetches <number> (default 25)

When capped, output metadata includes meta.invitee_hydration.truncated and truncation_reason.

# Last 7 days
calendly list-events --user-uri "<URI>" --min-start-time "$(date -u -d '7 days ago' +%Y-%m-%dT00:00:00Z)"

# This week with invitees (expand first; bounded fallback)
calendly list-events \
  --user-uri "<URI>" \
  --include-invitees \
  --max-invitee-fetches 25 \
  --min-start-time "2026-01-20T00:00:00Z" \
  --max-start-time "2026-01-27T23:59:59Z"

# Future events only
calendly list-events --user-uri "<URI>" --min-start-time "$(date -u +%Y-%m-%dT%H:%M:%SZ)"

Notes

• All times in API responses are UTC (convert to Pacific for display)
• Event UUIDs are found in list-events output
• OAuth tools available but not needed with Personal Access Token
• No pagination support in CLI - use time filters instead

---

Generated: 2026-01-20
Updated: 2026-02-23 (Added reschedule-event command with identifier extraction + MCP-first REST fallback) Source: meAmitPatil/calendly-mcp-server via mcporter