Symposium Rust Analyzer

An ACP (Agent Communication Protocol) proxy that wraps an MCP server to provide rust-analyzer LSP integration.

Part of the Symposium project.

Overview

This project creates an ACP proxy using symposium-sacp that connects to rust-analyzer LSP and exposes its functionality through MCP tools. It bridges the gap between ACP-based agents and rust-analyzer's Language Server Protocol.

Architecture

ACP Agent <-> ACP Proxy <-> MCP Server <-> LSP Client <-> rust-analyzer LSP

• ACP Proxy: The main proxy component that implements the ACP protocol
• MCP Server: Exposes rust-analyzer functionality as MCP tools
• LSP Client: Minimal LSP client implementation using lsp-types
• rust-analyzer: The actual Rust language server

Available Tools

The proxy exposes the following rust-analyzer tools:

• rust_analyzer_hover - Get hover information for symbols
• rust_analyzer_definition - Go to definition
• rust_analyzer_references - Find all references
• rust_analyzer_completion - Get code completions
• rust_analyzer_symbols - Get document symbols
• rust_analyzer_format - Format documents
• rust_analyzer_code_actions - Get available code actions
• rust_analyzer_set_workspace - Set workspace root
• rust_analyzer_diagnostics - Get file diagnostics
• rust_analyzer_failed_obligations - Get failed trait obligations (rust-analyzer specific)
• rust_analyzer_failed_obligations_goal - Explore nested goals (rust-analyzer specific)

Requirements

• rust-analyzer must be installed and available in PATH

Implementation Notes

This project uses a custom minimal LSP client implementation built with lsp-types.