C64 Bridge
io.github.chrisgleissner/c64bridge
MCP server for Commodore 64 Ultimate hardware and VICE emulator control.
Connect this server
Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.
{
"mcpServers": {
"c64bridge": {
"command": "npx",
"args": [
"-y",
"c64bridge@1.1.0"
],
"env": {
"LOG_LEVEL": "info",
"C64BRIDGE_CONFIG": "~/.c64bridge.json",
"C64BRIDGE_ACCESS": "full",
"C64BRIDGE_HTTP_TOKEN": "<your C64BRIDGE_HTTP_TOKEN>",
"C64BRIDGE_DIAGNOSTICS_KEEP": "200",
"C64_MODE": "c64u",
"C64U_HOST": "c64u",
"C64U_PORT": "80",
"C64U_PASSWORD": "<your C64U_PASSWORD>",
"U2_PASSWORD": "<your U2_PASSWORD>",
"VICE_BINARY": "x64sc",
"VICE_VISIBLE": "true",
"VICE_WARP": "false",
"GITHUB_TOKEN": "<your GITHUB_TOKEN>"
}
}
}
}- LOG_LEVELLogger verbosity.
- C64BRIDGE_CONFIGPath to the C64 Bridge configuration file.
- C64BRIDGE_ACCESSAccess mode limiting which operations may be called.
- C64BRIDGE_HTTP_TOKENsecretBearer token required by the optional HTTP transport.
- C64BRIDGE_DIAGNOSTICS_KEEPNumber of diagnostics files kept at startup (files older than 30 days are always removed).
- C64_MODEActive backend (c64u/U64 hardware, u2/U2-family cartridge, or vice emulator).
- C64U_HOSTUltimate 64 host name or IP address.
- C64U_PORTUltimate 64 REST port.
- C64U_PASSWORDsecretUltimate 64 network password sent as X-Password.
- U2_PASSWORDsecretU2-family network password sent as X-Password.
- VICE_BINARYVICE emulator binary to launch.
- VICE_VISIBLELaunch VICE with a visible window when possible.
- VICE_WARPEnable VICE warp mode.
- GITHUB_TOKENsecretGitHub token for optional RAG discovery against GitHub.
A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.
- Category
- APIs & Integrations
- Version
- 1.1.0
- Registry
- active
- Published
- 11/13/2026
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