How to use Claude Code for Word, Excel, and PowerPoint

Claude Code is sold as a coding tool. Anthropic describes it as "an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools." It is also a capable agent for office work. With the right skills installed, it can write a report as a Word file, build a model in Excel, and turn both into a deck.

Why use Claude Code for office files

• It comes with every paid Claude plan, from Pro at $20 a month. There is no extra charge and no API key.
• It works across a whole folder. One request can read a contract, update a spreadsheet, and build slides from both.
• The document skills check their own output, for example by rendering slides to images.

Set up the document skills

Anthropic publishes four document skills in its skills repository. It describes them as "the document creation & editing skills that power Claude's document capabilities."

1. Open a terminal in the folder that holds your files and run claude.
2. Add the skills marketplace with /plugin marketplace add anthropics/skills.
3. Install the skills with /plugin install document-skills@anthropic-agent-skills.
4. Ask for what you want. For example, "Rewrite section 2 of report.docx to match the numbers in model.xlsx."

Each skill handles one file type:

Claude Code's docs also list pdf and xlsx as built-in skills.

Where the terminal falls short

You cannot see the document. Claude Code prints text. To check a paragraph, a chart, or a slide, you open the file in Office, look, and go back to the terminal.

Review happens somewhere else. The agent writes the file and tells you what it did. The docx skill can write tracked changes if you ask, and you review them in Word.

Undo is limited. Claude Code's /rewind restores files edited with its own file tools. Its checkpointing docs say files changed only by shell commands are not tracked. The document skills work by running scripts, so keep a copy of anything you care about.

Four ways to use it without a terminal

1. The Claude desktop app

Claude Code runs in Anthropic's desktop app as well as the terminal. That removes the command line. It is still a coding tool, so you open the files in Office to look at them.

2. Claude Cowork

Anthropic says Cowork "uses the same agentic architecture that powers Claude Code, with no terminal required." It reads, edits, and creates Word, Excel, and PowerPoint files, and it can run tasks on a schedule. It is included with Claude Pro and higher plans. Mimzie vs Claude Cowork compares it with Mimzie.

3. Claude for Word, Excel, and PowerPoint

These are add-ins that put Claude inside the Office apps. They are available on Pro, Max, Team, and Enterprise plans, on the web, Windows, and Mac. In Word, Anthropic's docs say you can "use tracked changes mode so every edit lands as a revision you can accept or reject." Each add-in works in the file you have open.

4. Mimzie

Mimzie runs Claude Code on your computer, signed in with your own Claude plan, and gives it editors for .docx, .xlsx, and .pptx files.

• You see the document while the agent works on it.
• By default, every change is a tracked edit you accept or reject.
• One request can cover every file in the project folder.
• You can switch the same chat to ChatGPT, Gemini, or Grok.
• You do not need Office installed.

Mimzie installs Claude Code for you and opens Anthropic's own sign-in. It is free.

Which should you use?

All four run on a paid Claude plan. The Office add-ins also need Microsoft Office.