# Onionskin

> Review and edit Word, Excel and PowerPoint files with Claude Code or Codex. Comment in a browser editor on your computer, press Send, and the agent changes the real file. Open source (MIT). Pre-release.

Status: Available now. Open source under the MIT license.

Type onionskin report.docx in a terminal, or tell Claude Code or Codex: open report.docx in Onionskin. The file opens in a browser editor with a review panel. Edit it, comment on a selection, cell, range, shape or slide, drop numbered pins, write one overall note, then press Send. The agent changes the real file, and the page reloads in place and keeps your position.

Install for AI coding agents. Install steps for AI coding agents.

1. Install once: paste this sentence into Claude Code or Codex: Install Onionskin from https://github.com/abe238/onionskin
2. Open a file: say "open report.docx in Onionskin" (use the real file name), or run onionskin report.docx in a terminal.
3. The editor opens in the user's browser. When the user presses Send, apply their edits, comments, pins and overall note to that file.

## Docs

- [Landing page in Markdown](https://onionskin.abediaz.ai/index.md): How it works, features, privacy, formats, FAQ and credits
- [Full text](https://onionskin.abediaz.ai/llms-full.txt): The same content in one file, including install steps and the FAQ

## Project

- [Try-it demo](https://onionskin.abediaz.ai/try/): A recorded agent session replayed in the browser, no install
- [GitHub repository](https://github.com/abe238/onionskin): Source code under the MIT license
- [abe238](https://abediaz.com): Author's website

## Optional

- [abe238 on GitHub](https://github.com/abe238): Author's GitHub profile
- [abe238 on X](https://x.com/abe238): Author's posts
- [office-engine](https://github.com/p10node/office-engine): MIT project by p10node that Onionskin builds on
- [human-review](https://github.com/petergyang/human-review): MIT project by Peter Yang that Onionskin builds on