How to Use Microsoft 365 Copilot Cowork Plugins
Learn how Copilot Cowork plugins work for end users, how Skills and connectors appear inside Microsoft 365 Copilot Cowork, and how Telvine measures usage safely.
Microsoft 365 Copilot Cowork plugins extend Cowork with installable capabilities. A plugin can provide agent Skills, connectors, or both. Microsoft describes Cowork plugins as Frontier functionality, so expect the packaging and admin surface to keep moving while the product matures.
This guide covers the user view: what a plugin does, how it shows up in Cowork, and what you should measure with Telvine once people start using it.
What a Copilot Cowork plugin contains
A Cowork plugin is packaged as a Microsoft 365 app. It can include:
- Declarative agent Skills for task-specific work.
- Connectors for access to external data or systems.
- Reference material for instructions, examples, or grounding.
- Telemetry hooks in the backend or connector layer where the plugin owner can safely emit events.
Source: Microsoft 365 Copilot Cowork plugins.
How users should think about plugins
The plugin is the app. The Skill is the job it can do.
For example, a finance operations plugin might expose:
| User request | Plugin capability |
|---|---|
| "Prepare the close checklist" | A close-management Skill |
| "Find unreconciled payments" | A reconciliation Skill plus accounting connector |
| "Draft customer follow-ups" | A collections Skill |
The user does not need to know every internal component. They install or enable the plugin, then ask Cowork for the work.
What Telvine should measure
Telvine should sit behind the plugin as the measurement layer:
- Plugin adoption: installed, enabled, disabled, updated.
- Skill execution: invoked, completed, blocked, errored.
- Connector behavior: connected, auth failed, dependency failed, operation completed.
- Outcome quality: accepted, revised, rated, retried.
- Version impact: whether the new plugin version reduced errors or improved latency.
Keep the event envelope closed. Do not send prompts, user content, connector payloads, files, or retrieved records. Send typed metadata only.
User rollout checklist
- Explain the plugin in terms of the job it does, not the components it contains.
- Give users example prompts that map to each Skill.
- Confirm the connector permissions before rollout.
- Track plugin and Skill versions from day one.
- Route Telvine events to the analytics stack your team already uses.