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Try ZeroWidth in five minutes

Run ZeroWidth on your own computer, connect Claude Code, and see what ZeroWidth would read, without reading or sending anything.

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You need Node 24 or later. Each command runs ZeroWidth with npx, so there is nothing to install first.

Make a record and check your setup

init writes a settings file, zerowidth.json, for a record kept in team.db. doctor checks your setup and says what to fix.

Terminal
npx @zerowidth/cli init --db team.db
npx @zerowidth/cli doctor

Start ZeroWidth

ZeroWidth starts on this computer and prints the console's address.

Terminal
npx @zerowidth/cli serve --db team.db

Connect Claude Code

In a second terminal, add ZeroWidth to Claude Code.

Terminal
claude mcp add --transport http zerowidth http://127.0.0.1:4380/mcp

See what ZeroWidth would read

The import is a dry run: ZeroWidth counts what would be read from your Claude Code sessions and shows the cost. Nothing is read or sent.

Terminal
npx @zerowidth/cli import ~/.claude/projects

When you're ready, add --run --cap 5 to read, with a spending limit of $5. Reading needs an OpenRouter key, or your own AI model.