Master Claude Cowork
The complete guide to Claude Cowork across desktop, web, and mobile
Guide v1.14.0: Cowork in every conversation, Claude 5.5 models
Updated Oct 11, 2026 with Cowork available from any conversation, Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5, Claude Design, Slides and Docs on every plan, Google Docs, Sheets and Slides connectors, and the move of Pro and Max Cowork tasks to the cloud. The guide also covers a bilingual workflow library, a verified product FAQ, security guidance, prompt templates, and reference material for each supported surface. Product capabilities vary by plan and surface. Check the linked Anthropic documentation before relying on a feature for critical work.
View Capabilities →TL;DR
What you need to know in 30 seconds
| Target Audience | Knowledge workers (non-developers) |
| Platform | Desktop: macOS 13+, Windows, Linux beta; web and mobile |
| Access | Paid Claude plans only (Pro, Max, Team, Enterprise); new Pro and Max tasks run in the cloud |
| Status | Available now; some surfaces and computer use remain beta or preview |
| Best For | File organization, document creation, OCR |
| Scope | Capabilities depend on surface, permissions, connectors, and plan |
Get Started in 3 Steps
A practical path to your first automated workflow
Install Claude Desktop
Download from claude.ai/download. Cowork requires a paid plan (Pro, Max, Team or Enterprise); Linux Desktop remains beta.
Why This Guide?
Stop wasting hours. Start working safely and efficiently from day one.
Without the Guide
- Blocked from working for hours with setup issues
- Repeat expensive attempts without clear checkpoints
- Risk exposing passwords, confidential files, API keys
- Write every instruction manually, every time
- No idea what tasks are safe to delegate
- Files accidentally deleted with no backup
With the Guide
- Follow a step-by-step setup with explicit checkpoints
- Use explicit scope and checkpoints to control expensive retries
- Keep passwords & files safe with isolation setup
- 70 copy-paste prompts ready to use instantly
- Clear guidelines: what's safe, what's risky
- Built-in backups before every risky operation
Complete Documentation
Everything you need to master Cowork
29 Step-by-Step Workflows
From invoicing to project planning. Complete with copy-paste prompts, examples and troubleshooting.
Popular70 Ready-to-Use Prompts
Copy-paste prompts for file ops, document creation, data extraction, and web research.
Security Guide
Prompt injection defense, workspace isolation, browser permission management, incident response.
Troubleshooting
VPN issues, permission bugs, mid-task failures, quota management. Decision tree included.
Product Comparison
Cowork vs Claude Code vs Copilot vs Gemini vs ChatGPT. When to use what.
Cheatsheet
1-page printable reference. CTOC framework, golden rules, keyboard shortcuts.
Profile Personalization
Create a personal .md profile to set Claude's voice, tone, and style. Template included.
Model Selection
Sonnet vs Opus: when to use each model. Speed, cost, and capability trade-offs.
Feb 2026Claude Legal Extension
First official Cowork plugin. Automated contract review, risk detection, compliance tracking. Documentation only.
Customize Tab & Skills
Skills system (slash commands like /pdf /xlsx), MCP connectors, community skills. No coding required.
Cross-Session Memory
Persist context between sessions with Desktop Commander and a memory.md file. Never repeat yourself.
Scheduled Automation
Daily briefs, weekly reports, monthly dashboards; set once, run automatically.
29 Complete Workflows
Organized by task type - Administrative, Commercial, Production, Communication, Organization
Invoice/Quote Generation
Create invoices from templates. VAT calculations, legal mentions.
Quote → Invoice
Automatically convert accepted quotes to invoices.
Payment Reminders
Generate escalating reminders (R1, R2, R3, formal notice).
Compliance Verification
Check mandatory documents (certifications, insurance).
Client Follow-up Tracker
Excel dashboard with statuses and next actions.
Supplier Price Comparison
Multi-quote analysis with weighted scoring.
Financial Model Validation
Audit Excel formulas, assumptions, errors.
Workforce Planning
Model HR growth, compensation costs.
Prospect Research
Company investigation (ID, revenue, financial health, decision-makers).
Detailed Quote Creation
Professional quotes with pricing and variants.
Competitor Analysis
Local benchmarking (pricing, offers, reviews).
Commercial Presentations
Structured PowerPoint/Keynote for clients. Includes reusable template workflow from your existing company files.
Client Newsletters
Create regular responsive HTML newsletters.
Short-Term Rental Prospecting
Long-term listing analysis, short-term revenue estimates and personalized outreach.
Project/Site Planning
Gantt planning with milestones and dependencies.
Inventory Tracking
Inventory with reorder alerts and valuation.
Work Log
Daily activity report compliant with regulations.
Quality Control
Standardized verification checklists by trade.
Supplier Orders
Optimized purchase order preparation.
Social Media Posts
LinkedIn/Facebook/Instagram with calendar.
Email Templates
Reusable professional email library.
Review Responses
Manage Google/Facebook reviews with response strategies.
Knowledge Transfer
Training documentation for apprentices and succession.
Website Audit
Website diagnostic and action plan.
File Organization
Automatic folder sorting by type and date.
Expense Tracking
Receipts to Excel accounting with OCR.
Meeting Preparation
Structured client/supplier briefings.
Scheduled Automation
Daily briefs, weekly reports, monthly dashboards — set once, run automatically.
Cross-Session Memory
Persist context between Cowork sessions with Desktop Commander and a memory.md file.
70 Ready-to-Use Prompts
Organized by category, tested and refined
File Operations
Organization, renaming, cleanup, deduplication
20 promptsDocument Creation
Reports, summaries, presentations, Excel
16 promptsData Extraction
Images → data, PDF parsing, OCR
17 promptsWeb Research
Research, synthesis, competitive analysis
17 promptsExample: Expense Receipt Extraction
Analyze all receipt images in ~/Cowork-Workspace/input/receipts/
For each receipt, extract:
- Date
- Vendor name
- Total amount
- Category (meals, transport, supplies, other)
Create an Excel file at ~/Cowork-Workspace/output/expenses.xlsx with:
- One row per receipt
- Columns for each extracted field
- A summary sheet with totals by category
- Use semicolon separators for EU locale formulasCowork vs Other Tools
Choose the right tool for your task
| Feature | Cowork | Claude Code | M365 Copilot | ChatGPT |
|---|---|---|---|---|
| Target User | Knowledge workers | Developers | M365 users | Everyone |
| Local File Access | Sandbox | Full | Office files only* | Upload only |
| Execute Code | Isolated environment | Full shell | No | Sandboxed tools |
| Create Office Docs | Native | Via scripts | Native | No |
| Browser Automation | Built-in browser, Chrome | Via tools | No | Operator beta |
| Multi-step Planning | Yes | Yes | Limited | GPTs only |
| Platform | Desktop + web/mobile | All | Windows/Mac | All |
| Status | Varies by surface | Production | Production | Production |
Rule of thumb: choose the surface from the files, permissions, connectors, and review controls the task needs.
*Note: "M365 Copilot" refers to Microsoft 365 Copilot (Word/Excel/PowerPoint integration), not GitHub Copilot (developer tool with full file system access).
Key Terms
Essential vocabulary for getting started with Cowork
Workspace
The files and services made available to Cowork for a task. Access depends on the active surface and permissions.
Prompt
Instructions you give to Claude. Can be simple ("organize these files") or complex workflows with multiple steps.
Workflow
A repeatable sequence of actions (read files → process → create output). Like a recipe you can reuse.
Token
A unit used to measure model input and output. Actual usage depends on the model, task, and processed content.
Context
Information Claude remembers during a conversation. Like short-term memory, limited but powerful.
Sandbox
Isolated testing area. Lets you experiment safely without affecting real files or data.
OCR
Optical Character Recognition. Claude can read text from photos/scans and convert to editable text.
Artifact
File created by Claude (document, spreadsheet, etc.). Appears in Claude's interface for preview/download.
7 Golden Rules
Follow these to avoid the most common mistakes
Always review the plan
Cowork proposes, you decide. Read every execution plan before approving. Look for unexpected actions.
Dedicated workspace only
Never grant access to ~/Documents, ~/Desktop, or your home folder. Create ~/Cowork-Workspace/ instead.
No credentials in workspace
Keep passwords, API keys, and secrets out of Cowork-accessible folders. Content is sent to Anthropic servers.
Verify file sources
Prompt injection risk in untrusted files. Malicious PDFs can manipulate Cowork behavior.
Budget error correction time
Treat generated documents and extracted data as drafts. Verify material fields against their sources.
Check network policy
If a connection fails, review the official troubleshooting guidance before changing VPN or firewall policy.
Backup before destructive ops
No undo for file deletions. Run cp -R ~/Cowork-Workspace/ ~/Cowork-Backup/ first.
Three Claude surfaces, different scopes
Choose from the files, permissions, connectors, and review controls your task needs.
Claude AI
You write, think, search.
Generalist conversational assistant. Zero config, multimodal, available on web and mobile.
Claude Cowork
You automate multi-step work.
Agentic workspace for files, documents, connectors, and isolated code execution. Capabilities vary by surface.
Claude Code
You code at scale.
Autonomous coding agent. Available in the desktop app (graphical interface) or the terminal. Understands your full codebase and acts on it.
Are You a Developer?
Claude Code offers full shell access and AI-powered coding workflows for developers.
- ✓ Write code in terminal or IDE daily
- ✓ Run builds, tests, deploy commands
- ✓ Want AI that edits files autonomously
Claude Code Ultimate Guide
66 Templates • 227 Quiz Questions • 11,100+ Lines