Chris EichlerAI-first Product
& Marketing

Claude Cowork + Plugins Guide


0. What is Claude Cowork?

Claude Cowork is an AI agent that works like a colleague and completes tasks on its own — e.g. building presentations or doing bookkeeping. Cowork uses the same agentic architecture as Claude Code but is now directly accessible inside Claude Desktop, without opening a coding terminal. Instead of reacting to individual requests one at a time, Claude can take on complex, multi-step tasks and run them on your behalf.

With Cowork you describe a desired outcome, focus on something else, and come back later to finished work — formatted documents, organised files, summarised research, and more. With Scheduled Tasks, Claude can run work automatically for you — something that's not possible in regular chats outside of Cowork.

Main features

  • Direct local file access: Claude can read and write your local files without manual uploads/downloads.
  • Sub-agent coordination: Claude splits complex work into smaller tasks and coordinates parallel workflows.
  • Professional outputs: produces high-end results like Excel sheets with working formulas, PowerPoint decks, and formatted documents.
  • Long-running tasks: work on complex tasks over extended periods.
  • Scheduled tasks: create and store tasks Claude runs on-demand or automatically on a schedule you choose.

Availability

Cowork is available as a research preview on paid plans (Pro, Max, Team, Enterprise) on:

1. What are Claude plugins?

Claude plugins are specialised extensions for the Claude Desktop app (Chat, Cowork, Code) that bring domain-specific knowledge and structured workflows. Every plugin contains skills (auto-activated expertise) and commands (explicit slash commands for structured flows).

Plugins work standalone. All commands work without external connections. Optionally MCP connectors (Slack, Notion, Jira, GitHub, etc.) can be attached to extend capabilities.

2. Prioritised plugins

The following five plugins are ordered by priority and form the core set for digital product development and productive teams.

PriorityPluginVersionSkillsCommandsPrimary value
1Engineering1.1.066Code reviews, architecture, incident response
2Design1.1.066UX critique, accessibility, design systems
3Product Management1.1.066PRDs, roadmaps, stakeholder communication
4Marketing1.1.057Content, campaigns, performance analytics
5Brand Voice1.0.033Brand guidelines, brand discovery, enforcement

3. Plugin breakdown: Engineering

Version: 1.1.0

3.1 Skills

Code Review — checks code for bugs, security holes, performance, and maintainability. Detects SQL injection, XSS, CSRF, N+1 queries, race conditions, and edge cases.

Documentation — produces technical docs: READMEs, API docs, architecture docs, runbooks, and onboarding guides.

Incident Response — triage and manage production incidents. Framework with severity classification (SEV1–4), response phases, and blameless postmortem format.

System Design — design systems, services, and architectures. Framework: requirements gathering, high-level design, deep dive, scaling/reliability, trade-off analysis.

Tech Debt — identifies, categorises, and prioritises technical debt.

Testing Strategy — designs test strategies and test plans. Test pyramid: unit tests, integration tests, E2E tests.

3.2 Commands

CommandDescription
/standupGenerate a standup update from current activity
/reviewStructured code review
/debugStructured debugging session
/architectureCreate an Architecture Decision Record
/incidentStart an incident-response workflow
/deploy-checklistPre-deployment checklist

3.3 MCP connectors

Slack, Linear, Asana, Atlassian (Jira/Confluence), Notion, GitHub, PagerDuty, Datadog, Google Calendar, Gmail.

4. Plugin breakdown: Design

Version: 1.1.0

4.1 Skills

Accessibility Review — checks designs and code for WCAG 2.1 AA compliance.

Design Critique — assesses designs on usability, visual hierarchy, consistency, and accessibility.

Design Handoff — produces comprehensive developer-handoff documentation.

Design System Management — manages design tokens, component libraries, and pattern documentation.

User Research — plans, runs, and synthesises research.

UX Writing — writes effective microcopy.

4.2 Commands

CommandDescription
/critiqueStructured design feedback
/design-systemAudit or extend the design system
/handoffGenerate developer handoff specs
/ux-copyWrite or review UX copy
/accessibilityWCAG accessibility audit
/research-synthesisSynthesise research findings

5. Plugin breakdown: Product Management

Version: 1.1.0

5.1 Skills

Competitive Analysis — analyses competitors with feature comparison matrices, positioning analysis, win/loss analysis.

Feature Spec — writes PRDs and feature specs with the INVEST framework.

Metrics Tracking — defines, tracks, and analyses product metrics (North Star, L1, L2).

Roadmap Management — plans and prioritises roadmaps (Now/Next/Later, RICE, MoSCoW).

Stakeholder Comms — produces stakeholder updates per audience.

User Research Synthesis — synthesises qualitative and quantitative research.

5.2 Commands

CommandDescription
/write-specWrite a feature spec or PRD
/roadmap-updateUpdate or prioritise the roadmap
/stakeholder-updateGenerate a stakeholder update
/synthesize-researchSynthesise user research
/competitive-briefCreate a competitive analysis brief
/metrics-reviewAnalyse product metrics

6. Plugin breakdown: Marketing

Version: 1.1.0

6.1 Skills

Brand Voice — applies brand voice and checks adherence.

Campaign Planning — plans marketing campaigns with a framework (goal, audience, message, channel, measurement).

Competitive Analysis — researches competitors and compares positioning.

Content Creation — produces marketing content: blog posts, social, email newsletters, landing pages.

Performance Analytics — analyses marketing performance across channels.

6.2 Commands

CommandDescription
/draft-contentCreate content across channels
/campaign-planCampaign planning and brief
/brand-reviewCheck content against brand voice
/competitive-briefCompetitive positioning brief
/performance-reportMarketing performance report
/seo-auditComprehensive SEO audit
/email-sequenceDraft email sequences

7. Plugin breakdown: Brand Voice

Version: 1.0.0

7.1 Skills

Brand Voice Enforcement — applies existing brand guidelines to content.

Discover Brand — autonomously searches enterprise platforms for brand materials (Notion, Confluence, Google Drive, Box, SharePoint, Slack, Gong, Granola, Figma).

Guideline Generation — generates brand guidelines from source materials.

7.2 Commands

CommandDescription
/discover-brandSearch brand materials across platforms
/generate-guidelinesGenerate brand-voice guidelines from sources
/enforce-voiceApply brand guidelines to content

7.3 Configuration

Brand Voice requires a local config file .claude/brand-voice.local.md with company name, enabled platforms, search depth, known brand-material locations, and enforcement strictness (strict/balanced/flexible).

8. Install & initial setup

8.1 Enable a plugin

Plugins are enabled in the Claude Desktop app under Settings → Plugins.

8.2 Configure local settings

After enabling, create .claude/settings.local.json:

{
  "name": "Your name",
  "title": "Your role",
  "team": "Your team",
  "company": "Company",
  "tech_stack": ["Next.js", "TypeScript", "Supabase"],
  "deploy_process": "GitHub Actions CI/CD"
}

8.3 Attach MCP connectors

Recommended connectors per plugin:

PluginMust-haveNice-to-have
EngineeringGitHub, SlackLinear/Jira, PagerDuty, Datadog
DesignFigma, SlackNotion
Product ManagementNotion, SlackLinear/Jira, Google Calendar
MarketingGoogle Drive, SlackNotion, Gmail
Brand VoiceNotionGoogle Drive, Slack, Gong

9. Best practices

9.1 General rules

Standalone + supercharged: all commands work without connectors. Connectors make them better but aren't required.

Skills activate automatically: you don't have to invoke skills manually. Claude detects the context and activates the relevant expertise itself.

Commands are explicit: use slash commands for structured workflows.

9.2 Plugin combinations

Plugins work best together:

  • Feature launch (PM + Engineering + Marketing): /write-spec/architecture/review/campaign-plan/draft-content
  • Sprint review (Engineering + PM): /standup/stakeholder-update
  • Content production (Marketing + Brand Voice): /enforce-voice/draft-content/brand-review
  • Brand onboarding (Brand Voice + Marketing): /discover-brand/generate-guidelines/enforce-voice

9.3 Confidence scoring

Brand Voice and Competitive Analysis outputs include confidence levels (high/medium/low). On low confidence always verify manually.

9.4 Folder structure for plugin projects

claude-plugins/
│
├── .claude/
│   ├── settings.local.json
│   ├── brand-voice-guidelines.md
│   └── brand-voice.local.md
│
├── docs/
│   ├── setup/
│   ├── plugins/
│   ├── workflows/
│   └── troubleshooting/
│
├── templates/
│   ├── prd-template.md
│   ├── adr-template.md
│   └── campaign-brief-template.md
│
├── brand/
│   ├── brand-guidelines.md
│   └── discovery-report.md
│
├── outputs/
│   ├── reviews/
│   ├── specs/
│   ├── reports/
│   ├── content/
│   └── postmortems/
│
└── connectors/
    ├── .mcp.json
    └── CONNECTORS.md

10. Troubleshooting

10.1 Common problems

Plugin not detected: check that the plugin is enabled under Settings → Plugins. Restart Claude.

Command returns generic output: make sure settings.local.json is configured correctly.

Connector won't connect: check the MCP config. Disconnect the connector and reconnect.

Brand Voice guidelines aren't loading: make sure .claude/brand-voice-guidelines.md exists and isn't empty.

10.2 Connector-specific errors

"Missing scopes": the connector needs additional permissions. Disconnect and reconnect.

Timeout on Slack/Notion: large workspaces can cause long load times. Reduce search depth in the Brand Voice config.

11. Document checklist

Setup (required):

  • settings.local.json configured
  • MCP connectors attached
  • Plugins enabled in Claude

Plugin references (required):

  • Engineering reference read
  • Design reference read
  • Product Management reference read
  • Marketing reference read
  • Brand Voice reference read

Brand Voice (required for content teams):

  • Brand discovery run
  • Brand guidelines generated
  • brand-voice.local.md configured
  • Enforcement tested

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Chris Eichler