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
FAQ from Lain Mcp
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.
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
