guest-and-external-sharing-review SKILL.md skillA
guest-and-external-sharing-review from basitalisandhu/m365-governance-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add basitalisandhu/m365-governance-skills/guest-and-external-sharing-review@git:20261005.46ad5a4Pins git:20261005.46ad5a4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- basitalisandhu/m365-governance-skills
- Path
plugins/m365-governance/skills/guest-and-external-sharing-review/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261005.46ad5a4, committed Oct 5, 2026
- First version recorded
- Oct 4, 2026
- Size
- 8,851 bytes
- Repository stars
- 3
- License
- MIT
Review guest accounts and external sharing in Microsoft 365 from read-only exports, reporting guests from blocked domains or in sensitive groups, stale and unaccepted invitations, anyone links and links that never expire, guest resharing and open Teams external access, with a per-guest access map and a draft removal list. Use when asked "who are our guests and what can they reach?", before tightening sharing or after a partner leaves. Not for tenant posture (entra-posture-review), per-file…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Guest and external sharing review Guests are invited for a project and stay long after it ends; tenant-wide sharing is left at "Anyone" from the trial; Teams talks to every external domain by default. This skill exports guests, their group memberships and invitations, and the SharePoint, OneDrive and Teams external settings, and reports what is open, who is in it, and which guests are candidates for removal, as a draft for people to confirm. ## Read-only principle Export, evaluate offline, propose. Every export below is a read: Graph `list` or `get` calls and PowerShell `Get-` cmdlets. The script reads the saved files and prints a report (and, with `--csv`, writes the draft removal list to the path you give); it never calls Microsoft Graph and never removes, disables or re-invites anyone. Each fix is a portal path, and for the SharePoint setting a Graph call, shown for review. A change runs only after the user confirms that exact command in the conversation, and this skill never runs it on its own. The removal list is a draft: each line needs confirmation from the inviter or the group owner. …
Read the whole file at its exact version.
How to install
mdr add basitalisandhu/m365-governance-skills/guest-and-external-sharing-review@sha256:8f2e597ef06a45d3The line at the top of this page pins the label git:20261005.46ad5a4, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_lfsscyjawuahq2f3)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 4, 2026 and Oct 5, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261005.46ad5a4 latest | 2026-10-05 | 46ad5a4 | 8,851 B | A | view · diff |
| git:20261004.58f29f5 | 2026-10-04 | 58f29f5 | 9,226 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8851 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
basitalisandhu/m365-governance-skills · 3 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lfsscyjawuahq2f3 GET https://markdownregistry.com/api/v1/resolve?ref=basitalisandhu/m365-governance-skills/guest-and-external-sharing-review GET https://markdownregistry.com/api/v1/blob/8f2e597ef06a45d378bc4430e8fec41c155ef481ce3632921a8fd7f351857445
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.