graphyn-mcp

MCP server crate for exposing Graphyn queries to coding agents.

graphyn-mcp loads a persisted graph and registers MCP tools so agents can ask blast-radius, dependencies, and symbol-usage questions over standard MCP transports.

Exposed tools

• get_blast_radius
• get_dependencies
• get_symbol_usages
• refresh_graph_index

refresh_graph_index lets agents trigger a re-analysis and update the in-memory graph without restarting the MCP server.

Main entrypoint

use std::path::PathBuf;
use graphyn_mcp::server;

# async fn run() -> Result<(), Box<dyn std::error::Error>> {
server::serve_stdio(PathBuf::from(".")) .await?;
# Ok(())
# }

Notes

• The server expects a graph store at .graphyn/db under the repo root.
• Tool formatting for agent-readable output is handled in context_builder.