How do I install Microcap?

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

Is Microcap safe to use?

Microcap was flagged by MCP Marketplace's security scan, scoring 4.2/10 (high risk). It has 5 high or critical findings to review. Review the security report on this page carefully before installing it.

What credentials does Microcap need?

Microcap requires the following credentials or environment variables: MICROCAP_HOME. You can find setup instructions on the server detail page.

What AI apps work with Microcap?

Microcap 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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Microcap MCP Server

by Monoxide Xen

Developer ToolsUse Caution4.2MCP RegistryLocal

Free

Server data from the Official MCP Registry

Simulate, generate and draw analog circuits in Micro-Cap 12: SPICE analyses, sweeps and schematics

About

Simulate, generate and draw analog circuits in Micro-Cap 12: SPICE analyses, sweeps and schematics

Security Report

4.2

Use Caution4.2High Risk

This MCP server for Micro-Cap 12 circuit simulation is well-structured with appropriate authentication and permission scoping. The code demonstrates good practices in input validation, error handling, and credential management. Minor code quality issues (broad exception handling, some missing input validation edge cases) do not significantly impact security. Permissions appropriately match the server's purpose as a circuit design tool. Supply chain analysis found 5 known vulnerabilities in dependencies (0 critical, 5 high severity). Package verification found 1 issue.

4 files analyzed · 10 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.

env_vars

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

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.

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:

Folder holding mc12_64.exe, if Micro-Cap 12 is installed somewhere the automatic scan does not findOptional

Environment variable: MICROCAP_HOME

How to Install

Add this to your MCP configuration file:

{
  "mcpServers": {
    "io-github-monoxide-xen-microcap-mcp": {
      "env": {
        "MICROCAP_HOME": "your-microcap-home-here"
      },
      "args": [
        "microcap-mcp"
      ],
      "command": "uvx"
    }
  }
}

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Microcap MCP Server

About

Security Report

Findings (10)Action required

Permissions Required

What You'll Need

How to Install

Reviews

No reviews yet

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