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virtuoso-mcp

virtuoso-mcp

by raghav8218
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Hybrid

virtuoso-mcp

An MCP server that connects AI assistants (Claude, Antigravity) to Cadence Virtuoso and Spectre.

It lets an AI assistant evaluate SKILL commands, check schematics, query transistor operating points from Spectre simulations, and export schematic PNGs directly through Cadence's native tools.

Features

  • SKILL Execution: Run arbitrary SKILL code headlessly in Virtuoso (virtuoso -nograph -replay).

  • Schematic Checks: Run schCheck to catch opens, shorts, and floating nets.

  • Image Export: Native hiExportImage rendering to 1080p PNG without third-party screenshot utilities.

  • Operating Point Queries: Extract small-signal parameters ($g_m, g_{ds}, V_{th}, V_{dsat}$, region) directly from Spectre PSF databases.

  • Ocean Simulations: Run analog testbenches via OCEAN batch scripts.

  • Local or SSH: Works directly on a CAD Linux machine or connects over SSH from your laptop.

Related MCP server: EDA Tools MCP Server

Setup

git clone https://github.com/ISDL_UG_107/virtuoso-mcp.git
cd virtuoso-mcp
pip install -r requirements.txt

Configuration

Copy config.example.json to config.json and set your paths:

{
  "mode": "ssh",
  "ssh_host": "eda-uni",
  "ssh_port": 22,
  "ssh_user": "ISDL_UG_107",
  "ssh_key_path": null,
  "remote_work_dir": "/home/ISDL_UG_107/work",
  "cshrc_path": "/cad/cshrc",
  "default_library": "EE301_2026",
  "timeout": 60.0
}

Set "mode": "local" if running directly on the Linux machine where Cadence is installed.

Connecting to Claude Desktop / Antigravity

Add this to your MCP configuration file (claude_desktop_config.json or mcp_config.json):

{
  "mcpServers": {
    "virtuoso": {
      "command": "python",
      "args": ["F:/virtuoso-mcp/main.py"],
      "env": {
        "PYTHONUNBUFFERED": "1"
      }
    }
  }
}

Available Tools

Tool

Description

Example

get_status

Check if Virtuoso is reachable

(none)

eval_skill

Run any SKILL code in Virtuoso

code="plus(2 3)"

check_schematic

Run schCheck on a cell

cell="ssota"

export_schematic_image

Export a schematic to PNG

cell="ssota", output_filename="ssota.png"

get_dc_operating_point

Query $g_m, g_{ds}, V_{th}$ from Spectre results

cell="ssota", instance="M1"

run_spectre_simulation

Run simulation via OCEAN

cell="ssota"

run_terminal_command

Run a shell command on the server

command="ls -l"

License

MIT

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

    This server cannot be deployed

    Claude Code, inside the Godot 4 editorFlockbay puts an AI agent in the real Godot 4 editor: it writes GDScript, runs your game and fixes what breaks. Free, or bring your own Claude Code or Codex.flockbay.comAd

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