How do I install Longpath?

Longpath is a local plugin. Install it using PyPI package: longpath and add the generated configuration snippet to your AI app's MCP config file. Then restart your AI app.

Is Longpath safe to use?

Longpath scored 5.2/10 (moderate risk) in MCP Marketplace's automated security scan. It has 3 high or critical findings to review. It's listed, but review the security report on this page before installing.

What credentials does Longpath need?

Longpath requires the following credentials or environment variables: LONGPATH_CONFIG, LONGPATH_HOME, JAVA_HOME. You can find setup instructions on the server detail page.

What AI apps work with Longpath?

Longpath uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Longpath MCP Server

by S CurveLabs

Developer ToolsModerate5.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Read-only P6 / MS Project schedule analysis: CPM, float, DCMA 14-point, logic checks, S-curves.

About

Read-only P6 / MS Project schedule analysis: CPM, float, DCMA 14-point, logic checks, S-curves.

Security Report

5.2

Moderate5.2Moderate Risk

The longpath MCP server is a well-architected schedule analysis tool with strong security fundamentals. It is read-only by design with proper input validation, no hardcoded credentials, and appropriate permission scoping. The single write operation (export_csv) has multiple safety gates. Minor code quality observations around broad exception handling do not materially impact security. Supply chain analysis found 3 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.

3 files analyzed · 8 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

File System Write

Writes or modifies files on your machine. Check that this is expected for the tool.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

process_spawn

Check that this permission is expected for this type of plugin.

system_info

Check that this permission is expected for this type of plugin.

What You'll Need

Set these up before or after installing:

Path to longpath.toml (java_home, mpxj_classpath, max_rows, allow_writes). Optional: .xer and MS Project XML need no config.Optional

Environment variable: LONGPATH_CONFIG

Folder searched for longpath.toml when LONGPATH_CONFIG is not set (default: a longpath folder in %LOCALAPPDATA%, or ~/.local/share/longpath).Optional

Environment variable: LONGPATH_HOME

A Java 11+ runtime, used only to open .mpp / P6 XML files through MPXJ (install longpath[mpp] for the MPXJ jars).Optional

Environment variable: JAVA_HOME

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-s-curvelabs-longpath": {
      "env": {
        "JAVA_HOME": "your-java-home-here",
        "LONGPATH_HOME": "your-longpath-home-here",
        "LONGPATH_CONFIG": "your-longpath-config-here"
      },
      "args": [
        "longpath"
      ],
      "command": "uvx"
    }
  }
}

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4.8

Local

MCP Marketplace

Free

by mcp-marketplace · Developer Tools

Search and install MCP servers from inside your AI client.

Longpath MCP Server

About

Security Report

Findings (8)Action required

Permissions Required

What You'll Need

How to Install

Reviews

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