What it is
This skill guides you through three stages of writing important documents: gathering all your context and ideas, building the document section-by-section through brainstorming and refinement, and testing it with a fresh AI to catch gaps before sharing. It's designed for anyone writing PRDs, design docs, decision docs, proposals, or technical specs who wants to ensure their document actually works when others read it.
What it does
- Asks clarifying questions to gather all the context you have about the project or decision
- Helps you build each section by brainstorming options, then refining what you keep
- Tests your finished document with a fresh AI (no prior context) to find confusing parts
- Pulls in context from Slack, Google Drive, or other tools if you have them connected
- Creates a structured scaffold for your document type with all the right sections
Use it when
- You're writing a product spec, proposal, or decision doc and want it to be clear
- You have a lot of context in your head but need help organizing it into a document
- You want to make sure your document works for readers who don't have your background
- You're starting a substantial writing task and want a structured process instead of a blank page
Add this skill to your AI
Copy the source URL and ask your AI to add it. Most coding agents — Claude Code, Cursor, Codex, Gemini CLI, OpenCode, Windsurf — will fetch and install it for you.
Try this prompt:
Add this skill to my project: https://github.com/anthropics/skills/tree/main/skills/doc-coauthoring
Or use the Claude.ai plugins manager:
Open Claude.ai plugins →