Act on Community Issues Instantly
When moderation requires blocking a GitHub user, remove a reaction in Slack to trigger it—no context-switching to GitHub.
Trigger
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Action
Block a user
Blocks an existing individual github user (not an organization or your own account), preventing them from interacting with your account and repositories.
Why this helps
A user becomes problematic on GitHub. Blocking them means opening GitHub, finding their profile, and going through the block flow. If you're managing community in Slack, this interrupts your moderation workflow.
- Moderate your GitHub community from Slack without context-switching
- Block problematic users immediately when you identify them
- Moderation workflow stays in one place—Slack
Setup
Build it in a few focused steps.
- 1Connect Slack and GitHub to Notis.
- 2Create an automation: 'When I remove a specific emoji reaction (e.g., a thumbs-down) from a Slack message mentioning a GitHub username, block that user from my GitHub organization.'
- 3Specify which emoji removal should trigger blocking and how Notis identifies the GitHub username.
- 4Choose a Notis channel for confirmation logs.
- 5Test with a test user to ensure blocking works correctly.
Questions about this workflow
Can I undo this if I block someone by mistake?
Yes. GitHub's blocking is reversible. You can ask Notis to unblock someone by sending a message or using a different emoji reaction.
Does this block them from all my repos?
No, it blocks them from the GitHub organization. They can't contribute, see private repos, or interact with org members.
What if the Slack message doesn't clearly mention a GitHub username?
Notis will ask you to confirm the GitHub username before blocking—it won't block the wrong person.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Slack to GitHub. A trigger fires from one place; an action lands in another.
Slack triggers
GitHub actions
New Channel Created Trigger
Triggered when a new channel is created in Slack.
Accept a repository invitation
Accepts a pending repository invitation that has been issued to the authenticated user.
Channel Message Received
Triggered when a message is posted in a Slack channel (public, private, or multi-party IM). Does NOT match direct messages.
List repositories starred by the authenticated user
Deprecated: lists repositories starred by the authenticated user, including star creation timestamps; use 'list repositories starred by the authenticated user' instead.
Direct Message Received
Triggered when a new direct message (DM) is sent to a user in Slack. Catches all DMs across all DM channels.
List stargazers
Deprecated: lists users who have starred a repository; use `list stargazers` instead.
Message Reaction Added
Triggered when a reaction is added to a message in Slack. Supports optional filtering by channel and emoji name.
Star a repository for the authenticated user
Deprecated: stars a repository for the authenticated user; use `star a repository for the authenticated user` instead.
Message Reaction Removed
Triggered when a reaction is removed from a message in Slack. Supports optional filtering by channel and emoji name.
Add email for auth user
Adds one or more email addresses (which will be initially unverified) to the authenticated user's github account; use this to associate new emails, noting an email verified for another account will error, while an existing email for the current user is accepted.
Reaction Added Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_ADDED` instead. Triggered when a reaction is added to a message in Slack.
Add app access restrictions
Replaces github app access restrictions for an existing protected branch; requires a json array of app slugs in the request body, where apps must be installed and have 'contents' write permissions.
Reaction Removed Trigger
DEPRECATED: use `SLACK_MESSAGE_REACTION_REMOVED` instead. Triggered when a reaction is removed from a message.
Add a repository collaborator
Adds a github user as a repository collaborator, or updates their permission if already a collaborator; `permission` applies to organization-owned repositories (personal ones default to 'push' and ignore this field), and an invitation may be created or permissions updated directly.
New Bot Message Received Trigger
DEPRECATED: use `SLACK_CHANNEL_MESSAGE_RECEIVED` with `is_bot_message=true` instead. Triggered when a new bot message is posted to a Slack channel.
Add a repository to an app installation
Adds a repository to a github app installation, granting the app access; requires authenticated user to have admin rights for the repository and access to the installation.
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When this happens · Trigger
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