symposium-cargo

An ACP proxy wrapping a Model Context Protocol (MCP) server for executing Cargo commands with structured JSON output.

Part of the Symposium project.

Features

• Execute cargo commands (check, build, etc.) via MCP tools
• Structured JSON output with filtered compiler messages
• Automatic stderr filtering (e.g. removes file lock messages)

Usage

The server provides MCP tools for common cargo operations:

• cargo_check - Run cargo check
• cargo_build - Run cargo build
• cargo_test - Run cargo test with optional test name/pattern

Response Format

{
  "exit_code": 0,
  "messages": [
    "warning: unused variable",
    "error: unexpected semicolon",
  ],
  "stderr": "Checking project v0.1.0",
  "command": "cargo check --message-format json",
  "build_success": true
}

Integration

This server integrates with the Symposium Agent Client Protocol (SACP) framework.