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Use cases → Documents and Drive

Rotate Drive access for external collaborators via automation

Regularly expire and re-grant Drive file access for external users without manual intervention or missed revocations.

Who it is forIT or security teams responsible for controlling third-party Drive sharing.
APIsDrive API, Admin SDK
Typical scopesdrive, admin.directory.user.readonly

The problem

External collaborators often retain access to Drive files long past project end, risking data exposure. Manual tracking is unreliable, and missed revocations are common when staff or project leads change.

How it works

  1. Use Admin SDK to enumerate external users with current Drive file access.
  2. For each, check against your policy (e.g., expiry or project status) to determine required action.
  3. Revoke sharing permissions via the Drive API, then, if needed, re-grant with updated expiry or access type.
  4. Log every change for audit and notify file owners where policy requires.

What changes

Access windows for external users are tightly controlled and documented, with no dependency on local staff to remember manual clean-up.

The trap in this one. Revoking and then immediately re-granting access in a single run can silently fail if the Drive API's permissions cache has not updated—especially for folders with many inherited permissions. The new grant may not take effect, or the user may retain access through another inherited permission. Always confirm effective permissions via a secondary check after changes, and expect propagation to take minutes for large folders.

Questions people ask

Can I set access expiry directly via the Drive API?

No. You must schedule a process to revoke and optionally re-grant access on your own schedule; Drive does not natively support per-user expiry.

What about files owned by users outside my domain?

A delegated service account can only manage sharing on files owned within your tenant. Cross-domain ownership requires a different approach.

Want this built?

This is a pattern we run in production. We will set up the delegation and build this on top of it — $500 per hour, most of it working the same day.

Talk to us Or read the setup guide

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