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PRPilot

Evidence-Driven Pull Request Intelligence for AI Assistants

PRPilot is an MCP (Model Context Protocol) server that extends AI assistants — like Claude, Cursor, and any MCP-compatible client — with real-world pull request intelligence. Built and deployed on NitroStack, the fastest way to build, deploy, and share MCP apps.

NitroStack License: MIT MCP Protocol Next.js Widget


Table of Contents


Related MCP server: GitHub PR Review MCP Server

Overview

Reviewing modern software pull requests is exhausting. Engineers lose hours sifting through thousands of lines of code diffs, tracking down whether CI actually ran, and verifying whether sensitive security boundaries were altered. Generic AI summaries often hallucinate or skim over critical risks.

PRPilot changes that. Using the official NitroStack TypeScript SDK, PRPilot retrieves ground-truth GitHub facts, categorizes modified files into architectural tiers, runs transparent risk heuristics, checks live CI pipeline statuses, and traces related issues into a structured, evidence-backed Review Dossier.

Instead of guessing, PRPilot:

  • Prioritizes areas that deserve human attention (security, auth, migrations, untested logic).

  • Generates an actionable, ordered 3-to-5 step reviewer route linked directly to file diff evidence.

  • Distinguishes confirmed facts from potential risks with honest assessments (e.g. explicitly warning when CI checks are absent instead of assuming tests passed).


What is MCP?

The Model Context Protocol (MCP) is an open standard that lets AI assistants securely connect to external tools, data sources, and real-world services. Instead of being limited to static training data, an AI model can call MCP servers to fetch live data, run actions, and integrate with engineering systems.

PRPilot is an MCP server built for code review workflows. Learn more about building and shipping MCP apps at nitrostack.ai.


Features

  • MCP-Native: Works seamlessly with any MCP-compatible client (Claude Desktop, Cursor, NitroStudio, ChatGPT).

  • 5 Granular Tools + Resource + Prompt: Exposes dedicated tools for metadata, file mapping, CI evidence, and full dossier synthesis.

  • Interactive Next.js Widget: Renders an editorial charcoal Review Dossier UI directly in supporting canvases.

  • Zero-Hallucination Integrity: Distinguishes verified facts from heuristics and explicitly reports missing data.

  • Live on NitroCloud: Hosted, production-ready, and instantly shareable.

  • Secure by Design: Read-only analysis; credentials stay safely in environment variables.


Live Demo

Point your MCP client at the SSE endpoint above to try it instantly without local installation!


Connect to an MCP Client

Claude Desktop & Cursor

Add PRPilot to your MCP client configuration file (e.g., claude_desktop_config.json or .cursor/mcp.json):

{
  "mcpServers": {
    "prpilot": {
      "url": "https://prpilot-6ad4acd1-ayush-heapify-global-community.app.nitrocloud.ai/sse"
    }
  }
}

NitroStudio (Desktop IDE)

  1. Open NitroStudio.

  2. Click Add Server $\rightarrow$ Other Project $\rightarrow$ HTTP.

  3. Enter the URL:

    https://prpilot-6ad4acd1-ayush-heapify-global-community.app.nitrocloud.ai/sse
  4. Click Connect. All 5 tools, resources, and prompts will be registered immediately.


Core MCP Tools & Primitives

All tools accept a typed schema: { owner: string, repo: string, pull_number: number, github_token?: string }.

Tool / Primitive

Type

Description

assemble_review_dossier

Tool (@Widget)

Flagship Tool: Synthesizes change intent, categorized map, risk signals, CI evidence, and 3–5 step reviewer route. Linked to the visual Next.js widget.

inspect_pull_request

Tool

Fast metadata extraction (title, description, author, branch targets, commit SHAs, file counts).

build_change_map

Tool

Categorizes changed files (logic, tests, configs, docs) and flags sensitive boundary signals (SIG_AUTH_SECURITY, SIG_DB_MIGRATION, SIG_UNTESTED_LOGIC).

inspect_verification_evidence

Tool

Checks live GitHub Actions and commit check-runs. Honestly identifies missing CI checks (no_checks_found).

trace_related_context

Tool

Parses explicit issue/PR references (#123, fixes #456) and fetches their live titles and statuses.

prpilot://heuristics/catalog

Resource

Machine-readable catalog of all risk rules, boundary regexes, and severity scoring weights.

review_pull_request

Prompt

Pre-configured prompt template guiding LLMs through systematic, evidence-driven code reviews.


Interactive Review Dossier Widget

Built with @nitrostack/widgets using Next.js 14 and React:

  • Risk Score & Meter: Overall computed risk level (low, medium, high) based on touched architectural boundaries.

  • Categorized File Tree: Clean visual breakdown separating core logic from test files and configurations.

  • Interactive Reviewer Route: Step-by-step checklist with interactive checkboxes guiding the engineer from high-risk paths to tests.

  • Honest CI Status: Direct check-run status cards linking to pipeline runs.


Getting Started

Prerequisites

  • Node.js 20.x or higher

  • npm 9+

  • An MCP-compatible client (NitroStudio, Claude Desktop, Cursor)

Installation

# Clone the repository
git clone https://github.com/ayushv7/PRPilot.git
cd PRPilot

# Install all dependencies (root & widgets)
npm run install:all

Configuration

Copy the example environment file:

cp .env.example .env

(Optional: Add a GITHUB_TOKEN in .env to increase GitHub API rate limits from 60 to 5,000 requests/hr).

Running Locally

# Start both MCP server (port 3000) and Widget server (port 3001) with hot-reload
npm run dev

# Or build and run production server
npm run build
npm start

Automated Testing

PRPilot includes a comprehensive test suite covering API error handling, heuristics, truncation limits, prompt injection safety, and live public PR smoke tests:

npm test

All 16 unit and smoke tests execute with tsx --test.


Deploy Your Own MCP App

Want to build and ship an MCP server like this one? NitroStack lets you create, deploy, and host MCP apps in minutes — no infrastructure to manage.

Start building: https://nitrostack.ai


Explore More MCP Apps


FAQ

What is an MCP server?
An MCP server implements the Model Context Protocol to expose tools, resources, and prompts that AI assistants can call. It lets an AI model take real actions and access live data.

What does PRPilot do?
PRPilot is an evidence-driven code review intelligence tool that analyzes pull requests, calculates architectural risk, and generates a structured, prioritized review route.

Which AI clients does this work with?
Any MCP-compatible client, including Claude Desktop, Cursor, and NitroStudio.

Can PRPilot review private repositories?
Yes! Provide a GitHub Personal Access Token (GITHUB_TOKEN in .env or passed via the github_token tool argument) with read access to your private repository.

Can it inspect already-merged or closed PRs?
Yes! GitHub preserves full pull request diffs, commits, and comments permanently. PRPilot seamlessly inspects open, merged, or closed PRs for post-mortems and compliance audits.


Keywords

PRPilot · MCP · Model Context Protocol · MCP server · MCP app · AI tools · AI agents · LLM tools · Claude MCP · Cursor MCP · NitroStack · deploy MCP server · build MCP app · GitHub pull request · code review intelligence · developer tools


License

MIT © 2026 Ayush (ayushv7)

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

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