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Lain MCP Server

@spuentesp

Repository

Basic information

Category

Other

Transports

stdio

Author

spuentesp

Submitted by

Sebastián Puentes

About Lain MCP Server

No overview available yet

Lain MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "lain": {
      "command": "/path/to/lain/target/release/lain",
      "args": [
        "--workspace",
        "/path/to/your/project",
        "--transport",
        "stdio"
      ]
    }
  }
}

Lain MCP Server tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is Lain Mcp?

LAIN-mcp is a Rust MCP server that gives AI coding agents real architectural awareness of your codebase by maintaining a persistent knowledge graph of every symbol and relationship. It is built for navigating large codebases efficiently, reducing token consumption by providing structure and impact analysis before changes.

How to use Lain Mcp?

Install the server and configure it with your MCP client. Invoke any of its 21 MCP tools covering architecture, search, impact analysis, and health monitoring. No API keys or cloud setup are required.

Key features of Lain Mcp

  • Blast radius analysis to know what breaks before changes
  • Persistent, queryable knowledge graph of every symbol
  • Co-change detection from git history analysis
  • Local semantic search with ONNX embeddings, no data leaving your machine
  • Sub-millisecond graph queries built in Rust with petgraph
  • 21 MCP tools for architecture, search, impact, and health

Use cases of Lain Mcp

  • Assessing impact of a proposed change across a large codebase
  • Discovering files that historically evolve together via git co-change analysis
  • Performing local, offline semantic search without external API calls
  • Providing AI coding agents with a structural map before making modifications

Frequently asked questions

1

How does Lain Mcp differ from alternative code search tools?

It provides persistent architectural awareness through a knowledge graph, not just line-by-line search, and runs completely locally with no cloud dependencies or API keys.

2

What data does Lain Mcp store and where?

It builds and maintains a knowledge graph locally on your machine. No code or data ever leaves your machine; everything is processed locally

Comments

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