Connect Slack to Cal
When something happens in Slack, Notis takes the next step in Cal. Describe what you want in plain English, or start from one of the examples below.
When this happens · Trigger
Do this · Action
Ways Notis can move work from Slack to Cal
Keep Slack conversations aligned with upcoming Cal bookings
When a channel message asks about upcoming meetings, fetch relevant Cal bookings so the team can answer from current scheduling data.
Confirm a pending Cal booking from a Slack DM
When a Slack DM explicitly approves a pending booking, ask Notis to confirm the matching Cal booking once it identifies the correct booking.
Set a Cal availability schedule from a clear Slack boundary
When a channel message clearly states a recurring availability boundary, have Notis create a Cal schedule reflecting that stated window.
Confirm a Cal booking when a Slack message gets an approval reaction
Use a designated approval reaction on the relevant Slack message as the signal for Notis to confirm its clearly identified pending Cal booking.
Check Cal availability before agreeing to a Slack meeting time
When a Slack channel proposes a meeting time, check free/busy availability in Cal before the team commits.
Look up Cal bookings mentioned in a scheduling DM
When a DM asks about meetings with a person or within a date range, fetch matching Cal bookings for a focused answer.
Fetch Cal booking context when a Slack message is flagged
Use a designated Slack reaction on a scheduling message to fetch relevant Cal bookings for follow-up context.
Reflect shared focus hours in Cal availability
When a channel message clearly establishes recurring focus hours, create a Cal schedule that protects those stated windows.
Check Cal before committing to a time in a DM
When a DM asks whether a specific time works, check Cal free/busy status to support a quick, confident reply.
Supported Triggers and Actions
Notis builds workflows that link Slack to Cal. A trigger fires from one place; an action lands in another.
Slack triggers
Cal actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add member to team
Adds a new member to a specified team within an organization by creating a team membership.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add organization attribute option
Adds a new option to an organization's attribute, requiring a display `value` and a `slug` unique for that attribute.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Delete oauth client webhook
Permanently deletes a specific webhook subscription of an oauth client in the cal application, stopping its notifications.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Cancel booking via uid
Cancels an existing and active cal.com booking using its unique identifier (uid).
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Check calendar availability
Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Check gcal synchronization status
Call this read-only action to verify the connection and synchronization status of a user's google calendar integration with cal.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Check ics feed calendar endpoint
Checks an ics feed url (expected as a query parameter) to verify its validity, accessibility, and icalendar data integrity.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Check Stripe status
Verifies if stripe is correctly connected to the cal scheduling system and functional for processing payments, reporting only on the integration's status.
Four ways to start an automation.
A trigger is the event that kicks a workflow off. Notis supports four kinds: an event in a connected app, an inbound webhook, a recurring schedule, and soon, your own database.
Integration triggers
Fire when something happens inside a connected app. New Notion page, Stripe charge, Linear issue: any of 1,000+ apps can start a workflow.
Webhook triggers
A unique URL per workflow. Anything that can send an HTTP POST can start an automation, including no-code tools that speak webhooks.
Recurring triggers
Cron-style schedules run a workflow on the clock. Daily standups, hourly syncs, business-hours-only digests: the workhorse of Notis.
Database triggers
Watch a row, query, or threshold in your own database and fire the moment the data changes. Row inserted, value crosses a limit, query starts matching.
Classic automation breaks. AI adapts.
Same triggers and actions, smarter middle. AI handles the fuzziness that breaks traditional Zapier-style workflows the moment a field gets renamed.
Describe it. Notis builds it.
Skip the visual builder. Tell Notis what you want, in plain English. It writes the workflow, you review and deploy.
You · in the Notis Builder
NEW“When a row gets added to the Q4 OKRs Notion database and the status is Blocked, send a Telegram message to the owner with a summary of what's blocking, and ping me if there's no reply within 24 hours.”
Notis built this automation:
Watch every run.
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- Full run history with inputs, outputs and traces
- Replay any run with edited inputs
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- Audit logs for compliance teams
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1 monthEverything in the box.
Whatever starts the workflow, the platform underneath is the same: a thinking brain, full visibility, and you in control.
AI in the middle
Every step can include an LLM call: summarise, classify, extract, rewrite.
Full observability
Every run, every step, every input, all replay-able from Mission Control.
Human in the loop
Pause for approval. Notis pings you in chat with one-tap approve.
Self-healing
When an API changes shape, Notis adapts the parser. Less midnight fire-fighting.
More ways to connect Slack and Cal
Connect any two apps with Notis in the middle.
Slack and Cal, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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