Local AI code review for coding agents. Rules enforced inside Claude Code, Codex, and Cursor. Free, open-source, fully local.

Saguaro Local Review

Local code review for coding agents. Rules enforced inside Claude Code, Codex, and Cursor. Your agent fixes its own mistakes while context is hot. Free. Apache 2.0.

Install

npm (macOS + Linux, requires Node.js 20+)

npm install -g @mesadev/saguaro

Or run without installing:

npx @mesadev/saguaro review

Homebrew (macOS)

brew install mesa-dot-dev/homebrew-tap/saguaro

Shell script (macOS + Linux)

curl -fsSL https://raw.githubusercontent.com/mesa-dot-dev/saguaro/main/install.sh | sh

Saguaro uses your existing agent CLI subscription (Claude Code, Codex, Cursor) when available, no API key needed. If no agent CLI is installed, set ANTHROPIC_API_KEY, OPENAI_API_KEY, or GOOGLE_API_KEY in your environment.

Quickstart

# 1. Initialize Saguaro in your repo
sag init

# 2. Generate rules from your codebase (or use the starter rules)
sag rules generate

# 3. Run a review
sag review

sag init walks you through setup:

• Creates .saguaro/config.yaml and .saguaro/rules/
• Offers three options: generate rules from your codebase, use starter rules, or start from scratch
• Sets up Claude Code integration automatically (MCP server, hooks, slash commands)
• Stores your API key in .env.local if provided

How It Works

1. Match rules to files — Rules load from .saguaro/rules/ as markdown with YAML frontmatter. Changed files match against rule globs using minimatch. Rules without globs apply to all changed files.
2. Gather context — Saguaro builds an import graph (tree-sitter + SWC) showing the "blast radius" — files t