Lib.rs

MCP (Model Context Protocol) server for Vibe-Graph.

Exposes the Vibe-Graph codebase analysis capabilities as MCP tools, enabling LLM-powered agents to query code structure, analyze impact, and understand dependencies.

Gateway Mode (Recommended)

The gateway mode allows multiple projects to be served through a single MCP endpoint. Run vg serve --mcp from any project directory - it will either start a gateway or register with an existing one.

use vibe_graph_mcp::gateway::{GatewayState, run_gateway, DEFAULT_GATEWAY_PORT};
use tokio_util::sync::CancellationToken;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let cancel = CancellationToken::new();
    let state = GatewayState::new(cancel);
    run_gateway(state, DEFAULT_GATEWAY_PORT).await?;
    Ok(())
}

Single-Project Mode (Legacy)

For backwards compatibility, single-project mode is still supported:

use vibe_graph_mcp::VibeGraphMcp;
use vibe_graph_ops::Store;
use std::sync::Arc;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    let store = Store::new(".");
    let graph = store.load_graph()?.expect("No graph found");
    
    let server = VibeGraphMcp::new(store, Arc::new(graph), ".".into());
    server.run_stdio().await?;
    Ok(())
}

Tools

• list_projects - List all registered projects (gateway mode)
• search_nodes - Search for nodes by name/path pattern
• get_dependencies - Get incoming/outgoing edges for a node
• impact_analysis - Analyze which nodes are impacted by changes
• get_git_changes - Get current uncommitted git changes
• get_node_context - Get a node and its neighbors for context
• list_files - List files in the graph with filters