Broad permissions create security and review risk.
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Chrome Extension MV3 Scope Checklist
Teams planning browser extensions for internal workflows, SaaS companions, data capture, or AI assistance. Use this checklist before building a browser extension. It helps clarify what must happen inside the browser, which permissions are justified, and how the extension connects to the rest of the workflow.
Checklist
- Define the exact browser action or repetitive step the extension removes.
- List required Manifest V3 permissions and why each one is needed.
- Map page context, content scripts, background workers, and API calls.
- Decide how authentication, customer data, and sensitive content are handled.
- Plan Chrome Web Store review, update ownership, and rollback expectations.
- Define analytics events that show the extension is saving real workflow time.
How to use this
Use the checklist to improve decisions before build
An extension should not become a hidden second product unless that is intentional.
API and auth behavior should be planned before the popup UI is designed.
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