What is Nectr?
Nectr is an open-source AI agent that automatically reviews every pull request in plain English. Connect a repository, and when a PR is opened, Nectr posts a structured review as a GitHub comment covering bugs, security issues, performance concerns, and style recommendations with a clear verdict and inline suggestions.Quickstart
Get Nectr running in under 5 minutes
Installation
Deploy to Railway and Vercel
API Reference
Explore the REST API endpoints
Architecture
Understand the system design
Key Features
Automated PR Reviews
Claude Sonnet 4.6 analyzes every PR with context from your entire codebase
Knowledge Graph
Neo4j tracks file ownership, related PRs, and developer expertise
Semantic Memory
Mem0 remembers project patterns and developer habits over time
MCP Integrations
Pull context from Linear, Sentry, and Slack during reviews
How It Works
Automatic Review
When a PR is opened, Nectr fetches the diff and builds context from Neo4j, Mem0, and MCP integrations
AI Analysis
Claude analyzes the changes with full context, checking for bugs, security issues, performance problems, and style violations
Post Review
Nectr posts a structured review comment with verdict, summary, and inline suggestions directly on the PR
Tech Stack
Nectr combines modern technologies to deliver intelligent PR reviews:- AI Model: Anthropic Claude Sonnet 4.6
- Backend: FastAPI with Python 3.14
- Frontend: Next.js 15 with React 19 and TailwindCSS 4
- Database: PostgreSQL (async with SQLAlchemy)
- Knowledge Graph: Neo4j for file experts and related PRs
- Semantic Memory: Mem0 for project patterns and developer habits
- Integrations: GitHub OAuth, Linear, Sentry, Slack via MCP
Why Nectr?
Context-Aware
Reviews consider file ownership, related PRs, linked issues, and production errors
Gets Smarter
Learns project-specific patterns and individual developer strengths
Open Source
MIT licensed — fork, self-host, and customize for your team
Extensible
MCP protocol enables integration with any tool or data source
Get Started
Ready to automate your PR reviews? Follow our quickstart guide to deploy Nectr in minutes.View on GitHub
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