letmediff
A review handoff tool for agent-driven coding sessions that captures worktree diffs, creates shareable review URLs, and streams reviewer feedback back to the agent.
README
letmediff
letmediff is a review handoff tool for agent-driven coding sessions.
The CLI runs as an MCP server inside a local repository, captures the current worktree diff, and posts it to the web app. The web app renders the diff at a shareable URL and sends reviewer feedback back to the MCP client over server-sent events.
Workspace
This repository is a pnpm monorepo.
packages/letmediffcontains theletmediffMCP CLI.apps/letmediff.itcontains the SvelteKit app that stores, renders, and streams diff feedback.
Requirements
- Node.js compatible with the package dependencies
- pnpm
^11.2.2
Install
pnpm install
Local Development
Run the app:
pnpm --filter letmediff.it dev
Run the MCP server against the local app by setting URL:
URL=http://localhost:5173 pnpm --filter letmediff exec letmediff
When used by an MCP-compatible agent, the server exposes tools to create named checkpoints, create a hosted diff URL, and wait for reviewer feedback.
How It Works
- The MCP server snapshots the repository when it starts.
- The agent can create named checkpoints while it works.
- When a review URL is requested, the server sends the collected checkpoint diffs to the app.
- The app renders
/diff/[id]and keeps an/events/[id]SSE connection open. - Submitted feedback is streamed back to the MCP server so the agent can continue from the review notes.
Package READMEs
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