Read and manage Google Calendar events: check availability, create, update, and delete calendar events.
Google Calendar ships in the w6w first-party pack. It declares 8 actions, 2 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.google-calendarGoogle Calendar checks availability and manages events from a workflow — creating an event with full detail or with Google’s own natural-language quick-add, updating or deleting an existing one, and reading a single event or listing everything on a calendar in a given range.
Availability is a purpose-built check, not something inferred from a list of events: a workflow can ask whether a person or resource is free before booking, the way a scheduling tool would. Multiple calendars are supported too — calendars can be listed, so a workflow isn’t locked to a single default one.
A fit for booking meetings triggered by an external event, keeping a calendar in sync with another scheduling system, or gating a workflow step on whether a time slot is actually free.
Three routes to the same 8 actions. The Workflow tab is generated from Google Calendar's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
create-event Insert an event on a calendar. `start` and `end` must be RFC 3339 timestamps (or dates when `allDay`).
get-availability Check whether a time slot is free or busy on a calendar via the FreeBusy API. `timeMin` and `timeMax` must be RFC 3339 timestamps.
list-calendars List the calendars in the authenticated user's calendar list. Returns one page; pass `pageToken` for the next.
list-events List events on a calendar. Returns one page; pass `pageToken` for the next. `timeMin`/`timeMax`/`updatedMin` must be RFC 3339 timestamps.
quick-create-event Create an event from a natural-language string via `events.quickAdd`.
update-event Patch fields on an existing event. Only supplied fields are sent; omit a field to leave it untouched.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Google Calendar's real ids.
{
"manifestVersion": "2",
"name": "google-calendar-example",
"steps": [
{
"id": "create-event",
"uses": {
"app": "io.w6w.google-calendar",
"action": "create-event",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"calendarId": "<calendarId>",
"start": "<start>",
"end": "<end>"
}
}
]
}create-event get-availability get-event list-calendars list-events +3 more actions available
Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Google Calendar, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Google Calendar. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "create-event",
payload: {
calendarId: "<value>",
// summary: "<value>",
// description: "<value>",
// location: "<value>",
start: "<value>",
end: "<value>",
// timeZone: "<value>",
// allDay: "<value>",
// attendees: "<value>",
// colorId: "<value>",
// visibility: "<value>",
// transparency: "<value>",
// guestsCanInviteOthers: "<value>",
// guestsCanModify: "<value>",
// guestsCanSeeOtherGuests: "<value>",
// recurrence: "<value>",
// useDefaultReminders: "<value>",
// maxAttendees: "<value>",
// sendUpdates: "<value>",
// conferenceSolution: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action create-event --payload '{"calendarId":"<value>","start":"<value>","end":"<value>"}' Give an AI agent Google Calendar — without giving it Google Calendar's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.google-calendar#create-event",
"input": {
"calendarId": "<calendarId>",
"start": "<start>",
"end": "<end>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Google Calendar connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Google Calendar's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Google Calendar itself is MIT, and the runtime that executes it is source-available (FSL).
Google Calendar declares its own checks, so its health is a property of the app rather than something the host guesses at.
Open incidents for Google Calendar on the Google Workspace Status Dashboard. Unauthenticated and unsigned.