Map travel reach from a flagged meeting location
Let a simple reaction mark a meeting location for a focused travel-area check.
Trigger
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Action
Get Isochrone
Tool to compute isochrone polygons for a given point. Use when you need to determine areas reachable within time or distance constraints.
Why this helps
Repeatedly checking whether meeting spots are convenient turns coordination into a map research task.
- Run reachability checks only for meeting spots the team flags.
- Make travel access easier to discuss with shared context.
- Avoid opening maps for every location mentioned in chat.
Setup
Build it in a few focused steps.
- 1Connect Slack and GraphHopper to Notis once in the portal.
- 2Create an automation in the portal or tell Notis what result you need.
- 3Write one instruction to calculate the reachable area for a reacted-to message with a meeting location and stated time or distance limit.
- 4Pick the Slack reaction added trigger with the agreed emoji and a report channel.
- 5Test by adding that reaction to one real meeting location message.
Questions about this workflow
What starts the calculation?
The workflow starts when the configured reaction is added to a message, subject to the trigger's optional emoji and channel filters.
Should the message include a travel limit?
Yes, include a time or distance limit or set a clear default in the prompt.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Graphhopper. A trigger fires from one place; an action lands in another.
Slack triggers
Graphhopper actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Capacity Clustering
Tool to solve capacity clustering problem. Use when assigning a set of customers to clusters to minimize total distance synchronously.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
GraphHopper Geocoding
Tool to perform forward or reverse geocoding. Use when converting between textual addresses and latitude/longitude coordinates.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Get Isochrone
Tool to compute isochrone polygons for a given point. Use when you need to determine areas reachable within time or distance constraints.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Calculate Matrix
Tool to calculate distance, time, or weight matrices via POST. Use when you have multiple origins/destinations or a symmetric point set and need a single batch request.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Get Custom Profiles
Tool to retrieve a list of all user-defined routing profiles. Use when you need to list custom profiles.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
POST Route
Tool to calculate complex routes via POST /route. Use when you need advanced route planning with custom parameters.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Upload GPX File
Tool to upload a GPX file to a public file hosting endpoint. Returns a public URL which can be used where a 's3key' is required.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
GraphHopper VRP POST
Tool to initiate VRP optimization. Use when you need to solve vehicle routing problems synchronously.
Connect any two apps with Notis in the middle.
Slack and Graphhopper, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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