Vesalius

Vesalius is a code graph map for AI coding assistants and developers with an on-device index, an MCP server, a CLI, a Mac app and a VS Code extension.

Vesalius gives your AI coding assistant a map of your codebase instead of making it search file by file. It reads your repository once on your Mac and remembers file connections, call sites, and code structures. AI assistants like Claude Code query it directly to get precise file and line references in fewer steps. The tool also provides a Mac app and a VS Code extension for developers to explore code, check project health, and view dependency cycles. It operates locally on your machine and never uploads your code to external servers.

Vesalius at a glance

Best for: Software engineer
Runs on: macOS, VS Code, CLI, API
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: github.com/haplollc/vesalius

Key features

Indexes repositories locally on your Mac
Provides an MCP server for AI coding assistants
Includes a Mac app for code exploration
Includes a VS Code extension
Tracks codebase health scores and hotspots
Detects circular imports and dependency cycles
Tracks local usage stats for AI queries

Use it for

Finding all callers and impacts before renaming a symbol
Exploring unfamiliar or legacy codebases
Reducing token usage and turns for AI coding assistants
Checking project health, diagnostics, and dead code

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