Check existing busy times from a Slack DM
Before suggesting a meeting, get a clear view of busy intervals for the relevant Calendly user and period.
Trigger
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Action
List user busy times
Fetches a user's busy time intervals (internal and external calendar events) in ascending order for a period up to 7 days; keyset pagination is not supported.
Why this helps
Manually checking conflicts can turn a quick reply into a calendar detour.
- Check conflicts before proposing a slot.
- Use a defined short period to focus the lookup.
- Reduce back-and-forth caused by avoidable clashes.
Setup
Build it in a few focused steps.
- 1Connect Slack and Calendly to Notis once through the portal.
- 2Create the automation in the portal or ask Notis conversationally.
- 3In one instruction, ask Notis to retrieve busy times when a DM asks about conflicts for a known user and a period of seven days or less.
- 4Select the Slack direct message trigger and choose the run-report channel.
- 5Test with a real conflict-check request and a valid user scope.
Questions about this workflow
How long a period can be checked?
The action supports a period up to seven days.
Are these open Calendly slots?
No. This action returns busy time intervals; use the event type available-times action for open slots.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Calendly. A trigger fires from one place; an action lands in another.
Slack triggers
Calendly actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Cancel event
Permanently cancels an existing, active scheduled event by its `uuid`, optionally providing a `reason`, which may trigger notifications to invitees.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Create an invitee no-show
Marks an invitee, identified by their existing and valid uri, as a 'no show' for a scheduled event.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Create One-Off Event Type
Creates a temporary calendly one-off event type for unique meetings outside regular availability, requiring valid host/co-host uris, a future date/range for `date setting`, and a positive `duration`.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Create scheduling link
Create a single-use scheduling link. creates a scheduling link that can be used to book an event. the link allows invitees to schedule up to the specified maximum number of events. once the limit is reached, the link becomes inactive.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Create share
Creates a customizable, one-time share link for a calendly event type, allowing specific overrides to its settings (e.g., duration, availability, location) without altering the original event type.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Create single use scheduling link
Creates a one-time, single-use scheduling link for an active calendly event type, expiring after one booking.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Create webhook subscription
Creates a calendly webhook subscription to notify a specified `url` (which must be a publicly accessible https endpoint) for selected `events` within a given `organization` and `scope`.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Delete invitee data
Permanently removes all invitee data associated with the provided emails from past organization events, for data privacy compliance (requires enterprise subscription; deletion may take up to one week).
Connect any two apps with Notis in the middle.
Slack and Calendly, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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