composio-google-calendar

---

name: composio-google-calendar description: Per-app playbook for driving Google Calendar through Composio (toolkit slug googlecalendar). Verified GOOGLECALENDAR_* tool slugs and argument shapes for listing, finding, creating, and updating events plus free/busy. Use alongside the composio hub skill. CRITICAL — covers the "events from a year ago" trap: GOOGLECALENDAR_EVENTS_LIST has no default timeMin, so you MUST pass timeMin/orderBy/singleEvents to get upcoming events.

Composio · Google Calendar

Toolkit slug: googlecalendar. Read the [[composio]] hub first for the call model. calendarId defaults to "primary". Times are RFC3339 (2026-06-02T15:00:00Z or with offset).

agent-swarm x composio POST /tools/execute/<SLUG> \
  --body '{"user_id":"[e-mail]","connected_account_id":"ca_…","arguments":{ … }}'

Headline tools

Slug	What	Key args
GOOGLECALENDAR_EVENTS_LIST	List events on a calendar	calendarId (def primary), timeMin, timeMax, singleEvents, orderBy, q, maxResults, timeZone, pageToken
GOOGLECALENDAR_EVENTS_LIST_ALL_CALENDARS	List across all calendars	timeMin, timeMax, singleEvents, orderBy
GOOGLECALENDAR_FIND_EVENT	Search for an event	query, timeMin, timeMax
GOOGLECALENDAR_EVENTS_GET	One event by id	calendar_id, event_id
GOOGLECALENDAR_CREATE_EVENT	Create event	start_datetime (required), end_datetime / event_duration_minutes (def 30), summary, description, location, attendees, timezone, calendar_id, send_updates, create_meeting_room (def true)
GOOGLECALENDAR_QUICK_ADD	NL event ("lunch tmrw 1pm")	calendar_id, text
GOOGLECALENDAR_UPDATE_EVENT / GOOGLECALENDAR_PATCH_EVENT	Edit event	calendar_id, event_id, fields
GOOGLECALENDAR_DELETE_EVENT	Delete	calendar_id, event_id
GOOGLECALENDAR_FIND_FREE_SLOTS	Free slots	items (def ["primary"]), time_min, time_max, timezone
GOOGLECALENDAR_LIST_CALENDARS	List the user's calendars	—
GOOGLECALENDAR_GET_CURRENT_DATE_TIME	Server "now" (use for timeMin)	timezone

Full set: 48 tools — agent-swarm x composio GET "/tools?toolkit_slug=googlecalendar&limit=100" | jq -r '.items[]|"\(.slug)\t\(.name)"'.

⚠️ The "events from a year ago" trap

GOOGLECALENDAR_EVENTS_LIST has no default timeMin. Calling it with no time window returns old/arbitrary events (this is exactly how "what's on my calendar?" came back with stuff from a year ago). To get upcoming events you MUST set the window and ordering explicitly:

NOW=$(date -u +%Y-%m-%dT%H:%M:%SZ)
agent-swarm x composio POST /tools/execute/GOOGLECALENDAR_EVENTS_LIST \
  --body "{\"connected_account_id\":\"ca_…\",\"arguments\":{
    \"calendarId\":\"primary\",
    \"timeMin\":\"$NOW\",
    \"singleEvents\":true,
    \"orderBy\":\"startTime\",
    \"maxResults\":10
  }}"

• timeMin = now (or the start of the window you care about).
• singleEvents:true expands recurring events into individual instances — required for orderBy:"startTime" to be valid.
• Add timeMax to bound the window (e.g. next 7 days).
• For "today/this week" prefer computing timeMin/timeMax locally, or call GOOGLECALENDAR_GET_CURRENT_DATE_TIME first to anchor to the server's clock.

Create an event

agent-swarm x composio POST /tools/execute/GOOGLECALENDAR_CREATE_EVENT \
  --body '{"connected_account_id":"ca_…","arguments":{
    "summary":"Norrsken <> Desplega",
    "start_datetime":"2026-06-05T15:00:00+02:00",
    "event_duration_minutes":30,
    "timezone":"Europe/Madrid",
    "attendees":["[e-mail]"],
    "send_updates":"all"
  }}'

• Either end_datetime OR event_duration_minutes (default 30).
• create_meeting_room defaults true (adds Google Meet) — set false to skip.
• Create/update/delete are write actions — only on explicit request.

Gotchas

• The year-ago trap above is the #1 issue. timeMin is not optional in practice.
• orderBy:"startTime" requires singleEvents:true or the API errors.
• Output uses the event's own timezone; pass timeZone to normalize display.