Authz check
Verify that an endpoint checks ownership, not just authentication. Use on any handler that reads or mutates user data.From its SKILL.md
npx -y skills add Archive228/loopkit --skill authz-checkAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
SKILL.md
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Authz Check
The most common security hole: the code checks you're logged IN, but not that you OWN the thing.
- For every resource access: does it verify the current user is allowed THIS specific record?
WHERE id = ? AND owner_id = current_user— not justWHERE id = ?. - IDOR test: swap the ID in the request to another user's. Does it leak/allow?
- Admin/privileged actions: is the role checked server-side, every time, not just hidden in the UI?
- Default deny: new endpoints should require explicit authorization, not be open by oversight. Output each handler that authenticates but doesn't authorize, with the missing check.