Tutorial15 min read

The Ultimate Prompt Engineering Guide for Claude Cowork

Learn how to write prompts that get better results from Claude Cowork. From basic principles to advanced techniques, this guide covers everything you need to become a prompt expert.

Published on January 15, 2026

Why Prompts Matter

The quality of your results depends heavily on how you communicate with Claude. Better prompts = better outputs.

The CORE Framework

Use this framework for consistent results:

  • Context: Provide background information
  • Objective: State what you want accomplished
  • Requirements: Specify constraints and preferences
  • Example: Show what good output looks like

Example Application

Bad prompt:

Make a budget spreadsheet

Good prompt using CORE:

Context: I track monthly personal expenses across 5 categories.

Objective: Create a budget tracking spreadsheet for 2026.

Requirements:
- Categories: Housing, Food, Transport, Entertainment, Other
- Include columns for budgeted vs actual amounts
- Add formulas for totals and remaining budget
- Use conditional formatting for overspending
- Make it print-ready on standard paper

Example: Similar to a typical budget tracker with monthly tabs.

Advanced Techniques

Chain of Thought

Ask Claude to explain its plan before executing:

Before starting, outline your approach for organizing these files.

Iterative Refinement

Start simple, then add requirements:

Good start. Now also add a chart showing monthly trends.

Error Prevention

Specify what NOT to do:

Do NOT delete any original files. Only create copies.

More tips →

Ready to Get Started?

Put these tips into practice with Claude Cowork.