Inline comments on markdown files

Redline opens a markdown file in your browser and lets you leave inline comments on any sentence. Your selected local agent replies in the thread within seconds, suggests edits, and rewrites the document when you accept the round. The review server stays local and uses your existing agent auth.

A screen recording of Redline: a paragraph is highlighted, a comment is left, the agent replies in the sidebar with a rewrite suggestion, the comment is resolved, and the document reopens with the rewritten paragraph shown inline as a diff.

Try it

$ bunx @levistudio/redline ./your-file.md

Requires Bun and an authenticated Claude Code or Codex CLI on PATH.

Published to npm as @levistudio/redline. MIT licensed. Source on GitHub.