Keep a reliable digest for important shared files
For important documents, a hash gives your team a repeatable value to compare later. Let Notis start that check from the Slack conversation.
Trigger
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Action
Hash Data
Tool to compute a cryptographic hash (MD5, SHA256, etc.) of text or file data. Use when you need to verify integrity or generate digests.
Why this helps
Finding time to run integrity checks later can mean the check never happens.
- Make integrity checks part of the sharing moment.
- Create a digest that can be compared with a trusted value later.
- Reduce reliance on remembering a separate manual step.
Setup
Build it in a few focused steps.
- 1Connect Slack and Encodian to Notis once in the portal.
- 2Create an automation with a prompt explaining which shared document data merits a hash and how to report the digest.
- 3Pick the Slack Channel Message Received trigger and select a run reporting channel.
- 4Test with a sample file whose data can be safely hashed.
Questions about this workflow
Does this store a historical hash for comparison?
The Encodian action computes a hash. Retaining or comparing results requires a separate supported destination or workflow.
Can it hash text as well as file data?
The action can compute a cryptographic hash of text or file data, depending on the input available.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to Encodian. A trigger fires from one place; an action lands in another.
Slack triggers
Encodian actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Decode Base64 String
Tool to decode a Base64 string to a file. Use when you need to extract binary content (e.g., PDF, image) from Base64 data.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Base64 Encode
Tool to encode a string to Base64. Use when you need to convert text into Base64 representation for use in other operations.
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Compare Text
Tool to compare two text strings and determine if they match. Use when you have two strings and need to verify if they are equal.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
Hash Data
Tool to compute a cryptographic hash (MD5, SHA256, etc.) of text or file data. Use when you need to verify integrity or generate digests.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
Unzip File
Tool to extract files from an archive. Use when you need to unzip a package and retrieve its contents.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Get File Properties
Tool to retrieve properties of a file. Attempts multiple Encodian Filer endpoints and fallbacks.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Resize Image
Tool to resize an image by percentage or dimensions. Use when you need to scale or reshape an image with optional aspect-ratio enforcement.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Move File
Tool to move a file between containers. Use when you need to relocate a blob within your storage without manually copying then deleting.
Connect any two apps with Notis in the middle.
Slack and Encodian, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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