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Create a Cowork Plugin

Build your own Claude plugin from scratch in a guided Cowork session.

Official Anthropicby AnthropicChecked October 18, 2026

An Anthropic skill that walks you through designing and packaging a plugin inside Cowork, without needing to know the file formats. You end up with a ready .plugin file you can install or share.

Who it is for

  • Non-developers
  • Team leads
  • Operations staff
  • Consultants

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1
Help me create a plugin for our sales team's weekly reporting
Prompt 2
Build a plugin that bundles our brand guidelines and content templates
Prompt 3
Make a plugin for onboarding new employees

How to install it

In Claude Code

  1. /plugin marketplace add anthropics/knowledge-work-plugins
  2. /plugin install cowork-plugin-management@knowledge-work-plugins

In Claude.ai

Listed in Claude's plugin directory for Cowork: add the Cowork Plugin Management plugin from Customize > Plugins on a paid plan, and its skills also load in chat.

Good to know

Requires Cowork mode for the final .plugin file. A companion skill in the same plugin customizes existing plugins for your organization.

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How we checked it

Confirmed SKILL.md at cowork-plugin-management/skills/create-cowork-plugin/SKILL.md in anthropics/knowledge-work-plugins via the GitHub API; skill folder last changed 2026-03-18, repo has 29,992 stars and was pushed 2026-10-17; published in Anthropic's knowledge-work-plugins marketplace.

Source: github.com/anthropics/knowledge-work-plugins/tree/main/cowork-plugin-management/skills/create-cowork-plugin

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