mcp vcd

Local 2025-09-01 00:57:09 0

Provide all changes of the specified signal name to the model's context. This is useful for large waveform files with many signals where you cannot fit the entire VCD file into the model's context window.

A model context protocol (MCP) server for value change dump (VCD) waveforms.

https://github.com/user-attachments/assets/9d1a6a64-de22-4b5a-a597-685c663c9c79

Tools

get-signal: Provide all changes of the specified signal name to the model's context. This is useful for large waveform files with many signals where you cannot fit the entire VCD file into the model's context window.
Can optionally specify a start and end timestamp range for the model to look at.

Installation

uv pip install --system mcp-vcd

And add the following to your claude_desktop_config.json:

"mcpServers": {
  "mcp-vcd": {
    "command": "uv",
    "args": [
      "run",
      "mcp-vcd"
    ]
  }
}

See Anthropic's MCP documentation for more info.

[
  {
    "description": "Get all instances of a specified signal in a VCD file",
    "inputSchema": {
      "properties": {
        "end_time": {
          "description": "End timestamp (optional)",
          "type": "integer"
        },
        "file_name": {
          "description": "Name of the VCD file to analyze",
          "type": "string"
        },
        "signal_name": {
          "description": "Name of the signal to search for",
          "type": "string"
        },
        "start_time": {
          "description": "Start timestamp (optional)",
          "type": "integer"
        }
      },
      "required": [
        "file_name",
        "signal_name"
      ],
      "type": "object"
    },
    "name": "get-signal"
  }
]