Clear stale GitHub Actions cache from a workflow signal
When a signal points to a stale build cache, let Notis run the targeted cleanup and report the result.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Clear repository cache by key
Deletes github actions caches from a repository matching a specific `key` and an optional git `ref`, used to manage storage or clear outdated/corrupted caches; the action succeeds even if no matching caches are found to delete.
Why this helps
A corrupted or outdated cache can keep slowing down builds while teams lose time figuring out how to clear it.
- Reduce manual cache cleanup during build troubleshooting.
- Target caches by a key and optionally a git ref.
- Keep the cleanup tied to the event that prompted it.
Setup
Build it in a few focused steps.
- 1Connect Alchemy and GitHub once in the Notis portal.
- 2Create an automation in Automations, New Automation, and give it a name.
- 3Tell Notis how the incoming request identifies the repository, cache key, and optional git ref to clear.
- 4Choose the webhook trigger and select where run reports should go.
- 5Test with one real build signal and verify the intended matching cache is cleared.
Questions about this workflow
Will this delete every cache in the repository?
The action deletes caches matching a specific key and an optional git ref.
What if no matching cache exists?
The action succeeds even if there are no matching caches to delete.
Does an Alchemy build signal arrive as a built-in trigger?
No. Alchemy has no listed trigger events, so an HTTP request starts this workflow through a Notis webhook.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Alchemy to GitHub. A trigger fires from one place; an action lands in another.
Alchemy triggers
GitHub actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Accept a repository invitation
Accepts a pending repository invitation that has been issued to the authenticated user.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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.
List stargazers
Deprecated: lists users who have starred a repository; use `list stargazers` instead.
Star a repository for the authenticated user
Deprecated: stars a repository for the authenticated user; use `star a repository for the authenticated user` instead.
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.
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.
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.
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.
Connect any two apps with Notis in the middle.
Alchemy and GitHub, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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