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I built a local MCP server that gives Claude Code real PR context — 33s reviews instead of 90s

A developer built a local MCP server that provides Claude Code with real PR context, including blame history, linked issues, and structured review formats. The tool reduces PR review time from 90 seconds to 33 seconds by giving the AI archaeological context about code changes rather than raw diffs alone.

read1 min publishedMay 28, 2026

I use Claude Code for almost everything. But PR reviews kept frustrating me.

The workflow looks like this without tooling:

gh pr diff

locally, copy ~800 linesWhat's missing? Blame context (who wrote this line, when, why), linked issues (what bug was this PR supposed to fix), and a structured review format that forces citations.

Claude doesn't know any of that by default. You're asking it to review code with no archaeological context.

MCP (Model Context Protocol) lets you give Claude Code tools that run locally on your machine. The server speaks JSON-RPC over stdio and Claude calls your tools the same way it calls built-in tools.

I built a Node.js MCP server with 4 tools backed by gh

CLI and local git

:

source & further reading
dev.to — original article How I built AgentRAM: a memory API for AI agents without a vector DB AI, Pig Butchering, and the New Frontier of Scams: Why Scammers Are Becoming Developers I Vibe-Coded an App in a Weekend. Three Weeks Later I Couldn't Explain It.
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