MCP server for Commodore 64 Ultimate hardware and VICE emulator control.
To add C64 Bridge to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It needs 10 environment variables, listed below.
Install
npx -y c64bridge@1.0.6Environment variables
LOG_LEVELSet in your MCP configC64BRIDGE_CONFIGSet in your MCP configC64_MODESet in your MCP configC64U_HOSTSet in your MCP configC64U_PORTSet in your MCP configC64U_PASSWORDSet in your MCP configVICE_BINARYSet in your MCP configVICE_VISIBLESet in your MCP configVICE_WARPSet in your MCP configGITHUB_TOKENSet in your MCP configInstall with your client
claude mcp add c64-bridge --env LOG_LEVEL=<YOUR_LOG_LEVEL> --env C64BRIDGE_CONFIG=<YOUR_C64BRIDGE_CONFIG> --env C64_MODE=<YOUR_C64_MODE> --env C64U_HOST=<YOUR_C64U_HOST> --env C64U_PORT=<YOUR_C64U_PORT> --env C64U_PASSWORD=<YOUR_C64U_PASSWORD> --env VICE_BINARY=<YOUR_VICE_BINARY> --env VICE_VISIBLE=<YOUR_VICE_VISIBLE> --env VICE_WARP=<YOUR_VICE_WARP> --env GITHUB_TOKEN=<YOUR_GITHUB_TOKEN> -- npx -y c64bridge@1.0.6
Run this in a terminal to add the server to Claude Code.
What this does
C64 Bridge exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server needs the following environment variables to be set before it can run:
LOG_LEVEL C64BRIDGE_CONFIG C64_MODE C64U_HOST C64U_PORT C64U_PASSWORD VICE_BINARY VICE_VISIBLE VICE_WARP GITHUB_TOKEN
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install C64 Bridge?
Run the Claude Code command in the install section to add C64 Bridge to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with C64 Bridge?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to C64 Bridge as well.
Does C64 Bridge need an API key?
Yes. Before it can run, set these environment variables: LOG_LEVEL, C64BRIDGE_CONFIG, C64_MODE, C64U_HOST, C64U_PORT, C64U_PASSWORD, VICE_BINARY, VICE_VISIBLE, VICE_WARP, GITHUB_TOKEN. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
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