Verilator MCP Server

MCP server for Verilator RTL simulation and verification

Local serverstdio

What is the Verilator MCP MCP server?

Connect Verilator MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. MCP server for Verilator RTL simulation and verification. The verilator mcp mcp server is what makes that connection.

What the server does

An intelligent Model Context Protocol (MCP) server for Verilator that provides RTL simulation, automatic testbench generation, and natural language query capabilities. This tool bridges the gap between AI assistants and hardware verification, making RTL simulation more accessible and intelligent.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • Prerequisites — The Prerequisites tool exposed by this server

Installation

Installation goes through your MCP client rather than a global install: point it at npm on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

Credentials and setup notes

Configuration is passed through the environment: LOG_LEVEL, VERILATOR_PATH. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

  • Node.js 16+ - Verilator 5.0+ installed and in PATH - Git

Where it fits

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Verilator MCP's toolset — Prerequisites — is a fair guide to whether it matches your workflow. It is maintained by ssql2014; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Verilator MCP's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Worth knowing first

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
PrerequisitesThe Prerequisites tool exposed by this server.

How to install the Verilator MCP MCP server

{
  "mcpServers": {
    "verilator": {
      "command": "npx",
      "args": ["-y", "npm"],
      "env": {
        "LOG_LEVEL": "your-value",
        "VERILATOR_PATH": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • Node.js 16+ - Verilator 5.0+ installed and in PATH - Git
VariableDescriptionRequired
LOG_LEVELConfiguration value read at startup.Optional
VERILATOR_PATHFilesystem location the server is allowed to use.Optional

Example prompts to try

  • Use Verilator MCP to Prerequisites.

Frequently asked questions

It connects Verilator MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 1 tool (Prerequisites) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Verilator MCP directly.