# GPTsApp Plugins decision brief

## Cowork Plugin Management (claude-code)

Format: gptsapp-plugin-decision-brief/1.0.0
Plugin ID: gpa:plugin:685d53ac9fbf51db0706eb747737accb2cee8264466570ea0c590c52a4312e5c
Canonical: https://plugins.gptsapp.io/plugins/claude-code/anthropics/cowork-plugin-management
Source owner: anthropics
Declared author: Anthropic (manifest declaration)
Repository: https://github.com/anthropics/knowledge-work-plugins
Package root: cowork-plugin-management
Package format: claude-plugin
Documented targets: Claude Code (claude-code)
Documented targets are source declarations, not tested compatibility. Other interfaces remain unknown.
Task scope: All recorded tasks
Recorded tasks: Build a plugin (plugin-development)

Inspect workflows for creating and tailoring Cowork packages; do not assume every host exposes the same interface.

### Version and observation scope
Workflow-note version: 0.2.2
Workflow-note revision: 1f517b9de47e827c80cd933ed364e16838072239
Workflow-note observation: 2026-09-08T11:54:24.452Z
Manifest version: 0.2.2
Manifest revision: 1f517b9de47e827c80cd933ed364e16838072239
Manifest observation: 2026-09-08T11:54:24.452Z
Component observation scope: 1f517b9de47e827c80cd933ed364e16838072239
A manifest observation does not revalidate older component or prerequisite notes.

### Installation and delivery
Package role: Unknown
Delivery boundary: Unknown
Access: Manifest and packaged file paths observed. Required connections, account eligibility, costs and task permissions remain unknown.
License declaration: Package license not established by this observation; reference-only directory metadata.
A license declaration is not a directory redistribution or safety certification.
Official installation: https://github.com/anthropics/knowledge-work-plugins
Installation note: Publisher marketplace: knowledge-work-plugins. Entry: cowork-plugin-management. Exact package root: cowork-plugin-management. Review publisher instructions and Claude host requirements; no installation is performed here.
Distribution: knowledge-work-plugins / cowork-plugin-management; path cowork-plugin-management; index revision 1f517b9de47e827c80cd933ed364e16838072239; package revision 1f517b9de47e827c80cd933ed364e16838072239
Distribution evidence: https://raw.githubusercontent.com/anthropics/knowledge-work-plugins/1f517b9de47e827c80cd933ed364e16838072239/.claude-plugin/marketplace.json

### Prerequisites by recorded task
No complete prerequisite set established. This is not proof of no dependencies.
The complete prerequisite inventory has not been established; unknown does not mean optional, free or unnecessary.

### Included components and observation limits
- Observed packaged skill files (Skills): Regular source-tree files at 1f517b9de47e827c80cd933ed364e16838072239. Enumerated direct file pattern; not runtime activation or a full prerequisite inventory.
  Recorded members: cowork-plugin-customizer, create-cowork-plugin
  cowork-plugin-customizer: https://github.com/anthropics/knowledge-work-plugins/blob/1f517b9de47e827c80cd933ed364e16838072239/cowork-plugin-management/skills/cowork-plugin-customizer/SKILL.md
  create-cowork-plugin: https://github.com/anthropics/knowledge-work-plugins/blob/1f517b9de47e827c80cd933ed364e16838072239/cowork-plugin-management/skills/create-cowork-plugin/SKILL.md
Included Skill, Agent and Command files are not a request to install duplicate copies. File/configuration presence is not host activation.

### Source issues
No separately recorded issue. This is not a safety review.

### Independent runtime states
Package installed: Not observed
External connection: Not observed
Access authorized: Not observed
Task completed: Not observed
This brief includes no personal prerequisite answers, credentials or runtime checks. No winner, compatibility, safety or authorization verdict.

### Sources
- https://raw.githubusercontent.com/anthropics/knowledge-work-plugins/1f517b9de47e827c80cd933ed364e16838072239/.claude-plugin/marketplace.json
- https://raw.githubusercontent.com/anthropics/knowledge-work-plugins/1f517b9de47e827c80cd933ed364e16838072239/cowork-plugin-management/.claude-plugin/plugin.json
- https://github.com/anthropics/knowledge-work-plugins/tree/1f517b9de47e827c80cd933ed364e16838072239/cowork-plugin-management