Block domains reported in GitHub security issues
Capture a concrete security response directly from the issue where it was reported.
Trigger
New Issue Created
Triggers when a new issue is created in a GitHub repository. Pull requests are automatically excluded -- only true issues produce events. Results can be filtered by labels, assignee, creator, and mentioned user. The payload includes the issue number, title, body, state, labels, assignees, comment count, creator details, timestamps, and direct links to the issue on GitHub.
Action
Add Denylist Domain
Tool to add a domain to the denylist of a nextdns profile. use when blocking specific domains under a profile after obtaining its id.
Why this helps
A domain can remain reachable while a security issue waits for manual follow-up.
- Shortens the path from report to protection.
- Keeps the response tied to the source issue.
- Reduces the chance of forgetting a temporary block.
Setup
Build it in a few focused steps.
- 1Connect GitHub and NextDNS to Notis once through the portal.
- 2Create the automation in Automations or ask Notis to create it conversationally.
- 3Use this instruction: When a new GitHub issue labeled for security includes a domain to block, add that domain to the selected NextDNS denylist and report the result.
- 4Choose the new issue trigger, set the run-report channel, and test with one real security issue.
Questions about this workflow
How does Notis know which domain to block?
State in the instruction that the domain should be read from the security issue text.
Can it avoid duplicate entries?
Yes. Ask Notis to review the current denylist before adding the domain.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link GitHub to Nextdns. A trigger fires from one place; an action lands in another.
GitHub triggers
Nextdns actions
New Workflow Artifact Created
Triggers when a new workflow artifact is created in a GitHub repository. Monitors for newly created GitHub Actions workflow artifacts. Optionally filters by artifact name to restrict monitoring to specific artifacts.
Add Blocked TLD
Tool to add a top-level domain to the security blocklist for a nextdns profile. use after listing current security settings to ensure the tld is not already blocked.
Branch Changed
Triggers when a GitHub branch changes. Monitors a specific branch for: - New commits pushed (head commit SHA changes) - Protection status toggled (branch becomes protected or unprotected) - Protection settings changed, including: required status checks and their enforcement level, admin enforcement, required pull request reviews (dismiss stale reviews, code owner reviews, approving review count, last push approval), required linear history, force push allowance, deletion allowance, conversation resolution, branch locking, and fork syncing.
Add Denylist Domain
Tool to add a domain to the denylist of a nextdns profile. use when blocking specific domains under a profile after obtaining its id.
New Branch Created
Triggers when a new branch is created in a GitHub repository. Detects newly created branches. Deleted branches do not fire events.
Toggle Block Page
Tool to enable or disable block page for a configuration. use when you need to toggle whether dns blocks show a block page.
Check Run Status / Conclusion Changed
Triggers when a specific GitHub check run changes its status or conclusion. Monitors a single check run for changes to: status (queued, in_progress, completed, etc.), conclusion (success, failure, neutral, cancelled, skipped, timed_out, action_required), started_at, and completed_at.
Clear Logs
Tool to clear dns logs for a nextdns profile. use when you want to remove all existing query logs for a given profile. note: this operation cannot be undone.
Check Suite Status / Conclusion Changed
Triggers when a GitHub check suite changes its status or conclusion for a given ref. Monitors all check suites associated with a git reference (branch, tag, or commit SHA) for changes to status (queued, in_progress, completed, etc.) and conclusion (success, failure, neutral, cancelled, skipped, timed_out, action_required, startup_failure, stale). Optionally filters by GitHub App ID.
Create Profile
This tool allows users to create a new nextdns profile. it uses the post method at the endpoint https://api.nextdns.io/profiles. a profile is a distinct configuration set for dns filtering and security settings.
New Code Scanning Alert Created
Triggers when a new code scanning alert is created in a repository. Fires an event for each newly created code scanning alert detected in the configured repository. Alerts can be filtered by Git reference, scanning tool, state, and severity. The payload includes the alert number, rule details, tool information, state, severity, and the location of the most recent instance.
Delete NextDNS Configuration
Tool to delete a nextdns configuration profile. use when you need to remove an existing profile by its id. use after confirming the profile exists.
New Repository Collaborator Added
Triggers when a new collaborator is added to a GitHub repository. Monitors the full list of collaborators on a repository and fires an event for each newly added collaborator. The payload includes the collaborator's GitHub username, account ID, profile URL, avatar URL, permission flags (pull, triage, push, maintain, admin), and assigned role name.
Download Logs
Tool to download dns logs for a profile. use when you need the url of the exported logs. use after confirming the profile id is valid. supports getting a redirect url or json.
Commit Event
Triggered when a new commit is pushed to a repository.
Get Analytics Devices
Tool to retrieve analytics aggregated by devices. use when you need per-device query metrics within a specific time frame.
Connect any two apps with Notis in the middle.
Not just GitHub and Nextdns. Any combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
Save your first hour today.
7-day trial of any paid plan, with 20$ of usage included.
No card. Works with personal or business Nextdns.