---
title: "How companies share AI skills in Claude, ChatGPT, Copilot and Gemini: what 8 accounts and the docs show"
url: "https://univsense.com/blog/how-companies-share-ai-skills-2026-11"
canonical_url: "https://univsense.com/blog/how-companies-share-ai-skills-2026-11"
description: "A source review: eight accounts of teams sharing AI skills at work, what each assistant documents as of November 2026, and the problems they report."
author: "Unilytics Research"
date_published: 2026-11-10
last_updated: 2026-11-10
tags: ["ai-skills", "claude", "chatgpt", "copilot", "research"]
---

# How companies share AI skills in Claude, ChatGPT, Copilot and Gemini: what 8 accounts and the docs show

By Unilytics Research · Published 2026-11-10

We reviewed how teams share AI skills at work: the vendors' documentation for Claude, ChatGPT,
Microsoft Copilot and Google Gemini and open Claude Code bug reports, read on 9 November 2026 and re-checked on 10 November 2026, plus eight
accounts of teams doing it (seven public, one told to us directly). This is a review of those sources, not a survey:
it shows what the sources report, not how often each problem happens across companies. Unilytics sells a skill
system for consultants, so we have a commercial interest in this category; see the disclosure at the end.

## Key findings

- **Each of the four documents a way to share something reusable inside an organization, and they aren't the
  same thing.** Claude has organization skills, ChatGPT has workspace skills and plugins, Microsoft has an agent
  catalog, and Google shares Gems today and announced on 30 September 2026 that skills will eventually replace
  them in the Gemini app and Workspace. Plans, surfaces and behaviour differ by product.
- **Two of the eight accounts mention stale or outdated content.** In one, a skill went out of date after a
  product change; in the other, practitioners warn that mistakes in shared skills
  spread into new code and that skills are sometimes outdated. Anthropic's own guide advises keeping
  time-sensitive information out of skills.
- **Three public bug reports describe skill update and sync problems.** Claude Code issues #96064, #104021 and #106293
  (September and October 2026, open when we read them) describe three symptoms after a user updated their own
  skill: sessions getting the old version, a sync that stopped completing, and a delay of about 20 minutes. They
  are user reports about personal skills, not organization skills, and not confirmed defects.
- **Five accounts mention review or scanning, and four of them involve people.** Trail of Bits
  reads every line of hooks and scripts; Microsoft requires five reviews, including security and privacy, before
  its catalog; WPP's curated agents are approved by senior experts; one B2B software company added a security check
  done by hand. Sentry uses a skill that security-scans other skills. The material we read for the other three accounts
  doesn't mention either.
- **Several products accept files named `SKILL.md`; sharing settings and behaviour stay product-specific.** A
  shared file name doesn't make a skill behave the same everywhere. Sharing settings, sync and history are documented
  per product. Anthropic's docs say to upload custom skills separately for each surface, though Claude Code now
  syncs one way from a claude.ai account. Google's skills don't sync between the Gemini app, Workspace apps and
  Gemini Enterprise. OpenAI's guide for ChatGPT Enterprise moves published custom GPTs into plugins: a GPT's
  instructions and reference files become a skill, and custom actions have to be rebuilt. Virtualization Review
  reported in September 2026 that custom GPTs retire on 11 December 2026, later for some Enterprise customers.

## What this review doesn't show

No adoption rate, no failure rate, and no ranking of the assistants. The accounts were found through company
and personal blogs, a press release, code repositories and Hacker News, so they over-represent teams that write about their
setup. Blogs and press releases are self-reported.

## How many companies share skills?

We found no survey that counts companies with an internal skill library. The one public number we could
re-check is self-reported, and it counts agents inside one company, not companies: Microsoft runs "more than
100,000 agents" in its own tenant (Microsoft Inside Track, November 2025).

## Three ways teams share skills

| Way | Who does the work | Example |
|---|---|---|
| The assistant's own company sharing | An owner or admin uploads and approves | Claude: "Only owners can add or remove organization-wide skills" |
| A code repository plus a sync | Engineers | Sentry publishes 31 skills through a plugin marketplace |
| An internal review step in front of the assistant's sharing | An engineering team, with a security check done by hand | The B2B software company below |

## Eight accounts, and what went wrong

Each is labelled with what kind of evidence it is.

1. **A B2B software company** *(described to us directly by the company; anonymised and not independently
   verified)*. Its marketing team wrote writing skills with the brand voice and product facts typed inside.
   Engineering added an internal review step, including a security check done by hand, before skills reached
   staff. Getting the first skills out took people from several teams, and a skill went out of date after a
   product change.
2. **Anthropic's Claude Code team** *(company blog, June 2026)* has hundreds of skills in active use: first in a
   repo folder, then in an internal plugin marketplace once a skill has traction. Skills that "try to do too much"
   confuse the agent, and owners update them as new gotchas appear.
3. **Freeday**, a 23-person company *(a team member's blog, 2026)*, keeps department plugins in one repo,
   preinstalled by admins. They don't reach Claude's chat app, so skills are also pasted into the admin screen and
   kept in two places.
4. **Sentry** *(public repository)* ships 31 skills through a plugin marketplace, including one that
   security-scans other skills. Its README says it copies ("vendors") outside skills into the repository rather
   than depending on them at runtime.
5. **Trail of Bits** *(public repository)* curates 29 vetted plugins and approves 10 marketplaces, 7 of them from
   outside the company. "Published skills have been found with backdoors and malicious hooks", so reviewers read
   every line of hooks and scripts in every pull request.
6. **Microsoft IT** *(company blog, May 2026)* requires security, privacy, accessibility, responsible-AI and
   maker-stack reviews before an agent enters the company catalog. It describes working to prevent sprawl and
   duplicated work, says agents "tend to drop out of compliance" when its policies change, and deletes agents owned
   by individuals when they leave.
7. **WPP** *(press release, January 2026)* says its agencies built "thousands of bespoke AI agents", then launched
   a hub that starts with four curated agents approved by senior experts, and offers to build custom agents with
   clients from their own data and brand guidelines.
8. **Practitioners on Hacker News** *(forum thread, September 2026; anecdotal)* sync skills between Claude Code,
   Codex and OpenCode with repositories, symlinks and scripts; one commenter's tool pins content hashes. One warns
   that mistakes in skills "can easily spread to all of the new code you write using a coding agent"; another,
   that skills "are sometimes wrong or outdated".

## Seven issues the sources raise

| Problem | What the sources show |
|---|---|
| **Facts go stale** | Anthropic's guide: "avoid time-sensitive information". Live sources exist (Projects, SharePoint, Google Docs, MCP servers), but a skill has to be connected to them. Accounts 1 and 8 mention stale or wrong content. |
| **Edits don't arrive** | Open Claude Code reports about users' own skills: Settings show the new version while sessions get the old one (22 Sep 2026); the claude.ai skill sync stopped completing (filed 21 Oct); about 20 minutes from claude.ai to the desktop app (30 Oct). Reported, not confirmed. |
| **Review takes people** | Accounts 1, 5, 6 and 7 describe people reviewing, sometimes alongside automated scanning (account 4; Claude's Enterprise scan). The sources don't say how long review takes. |
| **Rollback action not found** | Version history is documented for published Claude organization items; we found no rollback action. Anthropic's enterprise guide recommends keeping skills in Git for rollback. |
| **Deployment and sync differ by surface** | Claude: "Manage and upload Skills separately for each surface" (Claude Code now syncs one way from claude.ai). Gemini skills don't sync between the Gemini app, Workspace and Gemini Enterprise. Custom GPTs were reported to retire on 11 Dec 2026. |
| **Per-project scope not found** | In the cited Claude docs, skills are switched on or off per user, not per Project; Enterprise can scope by group. |
| **Only owners add or remove Claude organization skills** | Users can't delete them; they can only switch one off for themselves. |

## What each assistant documents (re-checked 10 November 2026)

"Not found" means we found no source on that date, not proof that a feature is missing. Copilot is several
products; each cell names the one its source covers.

| | Claude organization skills | ChatGPT | Microsoft Copilot | Google Gemini |
|---|---|---|---|---|
| **When facts change** | Typed into each skill; MCP servers can supply live data | Plugin skills can read apps (MCP); skills can include reference files | Agent Builder agents use SharePoint files and folders as knowledge; the owner selects Update to publish changes | Gems pick up Google Docs edits; Drive files for skills "coming soon" |
| **Approvals** | "Requires review", "Open" or "Off"; on Enterprise, a security scan that is on by default for organizations that haven't chosen a setting | Permissions decide who can upload, share and publish plugins; no plugin approval step documented | Org catalog needs admin review; every update is resubmitted | Enterprise admins can require review of skill sharing; no review step documented for Gem sharing |
| **Versions and undo** | Version history for published items; rollback action not found | Not checked: the help page refused automated reading on 10 November | The last approved version stays in the catalog; delete can't be undone | No version history documented for Enterprise skills |
| **Scope to a team** | Enterprise only: by group (a plugin assigned to a group, or group access on a published item) | Plugins: people, groups, or anyone in the workspace with a link | Names, groups (chat only) or the whole organization | By email; only admins can share agents with Google Groups |
| **Other assistants** | `SKILL.md` files can be uploaded elsewhere; an export API for claude.ai skills not found | ChatGPT and Codex share one plugin directory | GitHub Copilot reads `.claude/skills`; Copilot Studio takes `SKILL.md` uploads | `SKILL.md` can be copied in; no sync between the Gemini app, Workspace apps and Gemini Enterprise |
| **Usage data** | Per skill, Enterprise only | Not checked: the help page refused automated reading on 10 November | Per agent and per user (admin center report, declarative agents, preview) | Sessions per agent; per skill not found |

## What the accounts suggest for a team starting now

These follow from the sources above; they aren't tested recommendations.

- **Keep facts in one maintained source.** Product names, messaging and voice in one place, with an owner, versions
  and access control, read by each skill as a step, instead of typed into every skill. A live source adds its own
  risks (who can read it, availability, and text that could carry instructions, known as prompt injection), so
  give it the least access it needs and treat it like any other dependency.
- **Plan the review before the rollout.** Four accounts describe people reviewing and one an automated scanner.
  Decide who or what checks a skill before it reaches everyone, and read hooks and scripts as you would code.
- **Keep the source of truth in version control.** Pull requests, owners and checks, then deploy to each
  assistant, and test that you can roll a deployment back. Anthropic's enterprise guide recommends Git for the
  same reasons.
- **Count what's used.** Where usage data exists (enterprise plans), read it before building more.

## Methodology

- **Scope:** skills, custom GPTs, Gems and agents that an organization shares with its own staff, plus two public
  repositories in which companies curate skills (Sentry's says it holds skills its team uses). Not public skill
  marketplaces in general.
- **Vendor documentation and bug reports:** read on 9 November 2026 and re-checked against each link on
  10 November 2026; claims that had changed were corrected. Six OpenAI pages and one Gartner press release
  refused automated reading that day, so we dropped every claim that rested only on them (two vendor customer
  stories, two usage statistics and a forecast among them); two table cells say "Not checked" instead. Every
  claim links its source in the list below. Claude appears most often in the issues table partly because the only public bug reports we found were for
  Claude Code. Help-centre pages carry no publication date, so the date is the date
  we read them. Bug reports describe what users reported, not confirmed defects.
- **Accounts:** seven public (company and personal blogs, a press release, code repositories, one Hacker News thread)
  and one B2B software company that described its rollout to us directly. We anonymised it and left out details
  that could identify it. Each account is labelled with its evidence type.
- **Corrections:** if a vendor changes a feature or we got one wrong, we update this page and note the change and
  its date at the top.
- **Disclosure:** Unilytics builds a skill system for consultants, a product in this space. We kept this review to
  what the sources show and left our product out of it.

## Sources

1. [Provision and manage skills for your organization](https://support.claude.com/en/articles/13119606) (Anthropic (Claude Help Center))
2. [Use skills in Claude](https://support.claude.com/en/articles/12512180-using-skills-in-claude) (Anthropic (Claude Help Center))
3. [Agent Skills](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview) (Anthropic (Claude Docs))
4. [Skill authoring best practices](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices) (Anthropic (Claude Docs))
5. [Skills for enterprise](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/enterprise) (Anthropic (Claude Docs))
6. [Lessons from building Claude Code: how we use skills](https://claude.dev/blog/lessons-from-building-claude-code-how-we-use-skills/) (Anthropic, 2026-06-03)
7. [Giving admins more visibility and control over Claude spend](https://claude.com/resources/articles/giving-admins-more-visibility-and-control-over-claude-usage-and-spend) (Anthropic, 2026-07-02)
8. [Claude Code issue #96064: an updated skill shows in Settings, but sessions get the old version](https://github.com/anthropics/claude-code/issues/96064) (GitHub, 2026-09-22)
9. [Claude Code issue #104021: claude.ai skill sync stopped completing](https://github.com/anthropics/claude-code/issues/104021) (GitHub, 2026-10-21)
10. [Claude Code issue #106293: skill updates take about 20 minutes to reach the desktop app](https://github.com/anthropics/claude-code/issues/106293) (GitHub, 2026-10-30)
11. [Moving your custom GPT workflows to plugins](https://learn.chatgpt.com/docs/migrate-custom-gpts.md) (OpenAI)
12. [OpenAI to retire custom GPTs, replace them with plugins](https://virtualizationreview.com/articles/2026/09/28/openai-to-retire-custom-gpts-replace-them-with-plugins.aspx) (Virtualization Review, 2026-09-28)
13. [Share and manage agents built in Agent Builder](https://learn.microsoft.com/en-us/microsoft-365/copilot/extensibility/agent-builder-share-manage-agents) (Microsoft Learn, 2026-11-06)
14. [Submit agents from Agent Builder to your org catalog](https://learn.microsoft.com/en-us/microsoft-365/copilot/extensibility/agent-builder-submit-to-org-catalog) (Microsoft Learn, 2026-09-30)
15. [Add and manage an uploaded skill (Copilot Studio)](https://learn.microsoft.com/en-us/microsoft-copilot-studio/agents-experience/skills-add-existing) (Microsoft Learn, 2026-10-21)
16. [GitHub Copilot now supports Agent Skills](https://github.blog/changelog/2025-12-18-github-copilot-now-supports-agent-skills/) (GitHub, 2025-12-18)
17. [Governing AI agents at scale: Lessons from our journey at Microsoft](https://www.microsoft.com/insidetrack/blog/governing-ai-agents-at-scale-lessons-from-our-journey-at-microsoft/) (Microsoft Inside Track, 2026-05-21)
18. [Deploying Microsoft Agent 365: How we're extending our infrastructure to manage agents at Microsoft](https://www.microsoft.com/insidetrack/blog/deploying-microsoft-agent-365-how-were-extending-our-infrastructure-to-manage-agents-at-microsoft/) (Microsoft Inside Track, 2025-11-21)
19. [Introducing skills in the Gemini app and Workspace, plus what's next for Gems](https://workspaceupdates.googleblog.com/2026/09/skills-gemini-app-workspace.html) (Google Workspace Updates, 2026-09-30)
20. [Upload Google Docs and other file types to Gem instructions](https://workspaceupdates.googleblog.com/2024/11/upload-google-docs-and-other-file-types-to-gems.html) (Google Workspace Updates, 2024-11-12)
21. [Create and manage skills (Gemini Enterprise)](https://docs.cloud.google.com/gemini/enterprise/docs/skills) (Google Cloud)
22. [getsentry/skills](https://github.com/getsentry/skills) (Sentry (GitHub))
23. [trailofbits/skills-curated](https://github.com/trailofbits/skills-curated) (Trail of Bits (GitHub))
24. [Scaling Claude beyond individual workflows: lessons from our team](https://ninkovic.dev/blog/2026/scaling-claude-beyond-individual-workflows) (ninkovic.dev)
25. [WPP launches Agent Hub on WPP Open, providing clients with access to advanced agentic AI marketing expertise](https://www.wpp.com/en/news/2026/01/wpp-launches-agent-hub-on-wpp-open-providing-clients-with-access-to-advanced-agentic-ai) (WPP, 2026-01-05)
26. [Ask HN: How do you manage skills files?](https://news.ycombinator.com/item?id=49589914) (Hacker News, 2026-09-06)
27. [Skills & Plugins](https://learn.chatgpt.com/docs/skills-and-plugins.md) (OpenAI)
28. [Roles and workspace permissions](https://learn.chatgpt.com/docs/enterprise/roles-and-workspace-permissions) (OpenAI)
29. [Plugin controls](https://learn.chatgpt.com/docs/enterprise/apps-and-connectors) (OpenAI)
30. [Microsoft 365 admin center - Usage reports: Agent usage (preview), MC1148545](https://mc.merill.net/message/MC1148545) (Microsoft (via mc.merill.net), 2025-09-05)
31. [About the transition from Gems to skills](https://knowledge.workspace.google.com/admin/generative-ai/gemini-app/about-the-transition-to-skills) (Google Workspace Admin Help)
32. [Introducing Gems sharing in the Gemini app, including admin controls](https://workspaceupdates.googleblog.com/2025/09/gem-sharing-gemini-app-workspace.html) (Google Workspace Updates, 2025-09-18)
33. [Manage Gemini Enterprise web app features](https://docs.cloud.google.com/gemini/enterprise/docs/manage-web-app-features) (Google Cloud)
34. [Share a chat agent (Gemini Enterprise)](https://docs.cloud.google.com/gemini/enterprise/docs/agent-designer/share-agent) (Google Cloud)
35. [View and export analytics data (Gemini Enterprise)](https://docs.cloud.google.com/gemini/enterprise/docs/view-analytics) (Google Cloud)