Word documents (docx)
Documents & Files
Have Claude write and edit real Word files, with headings, tables and tracked changes.
Documents & Files
Doc co-authoring
Walks you through writing a proposal or spec together, then tests it on a fresh reader.
Open sourceBy Anthropic
View source What is it?
A structured way to write an important document with Claude in three stages: Claude gathers context by asking you questions, you build each section together, then Claude tests the finished draft on a fresh copy of itself with no background to see where a reader would get lost.
Without it, you get a plausible first draft that quietly assumes things only you know. With it, the blind spots surface before your boss or client finds them.
It is a process rather than a file format, so pair it with the Word skill when you need the final document as a .docx.
Install in Claude Code
In Claude Code run /plugin marketplace add anthropics/skills, then /plugin install example-skills@anthropic-agent-skills. That bundle includes this skill alongside Anthropic's other example skills.
Try this prompt
Paste into Claude Code
Help me write a proposal for a new loyalty programme for our gym. Use the doc co-authoring workflow and ask me what you need to know first.Who it's for
Anyone writing a proposal, policy, brief or plan that other people have to act on.
Best for
- Client proposals
- Internal policies and plans
- Project briefs
- Decision documents
Why it made the list
The fresh-reader test is a simple idea that catches the gaps every other writing tool misses.
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