MCP server for Geargrafx PC Engine / TurboGrafx-16 emulator
Geargrafx MCP server is a locally run integration for AI assistants that speak the Model Context Protocol. MCP server for Geargrafx PC Engine / TurboGrafx-16 emulator.
Geargrafx is a very accurate, cross-platform TurboGrafx-16 / PC Engine / SuperGrafx / PCE CD-ROM² emulator written in C++ that runs on Windows, macOS, Linux, BSD and RetroArch, with an embedded MCP server for debugging and tooling.
Once Geargrafx is connected, these are the calls the assistant has available:
BIOS — Geargrafx requires a BIOS to run CD-ROM games. It is possible to load any BIOS but the System Card 3.0 with md5 38179df8f4ac870017db21ebcbf53114 isWindows — The Windows tool exposed by this servermacOS — The macOS tool exposed by this serverLinux — If you are using Ubuntu 25.04 or later, you can install SDL3 directly. Use the following commands to build:Libretro — The Libretro tool exposed by this serverInstallation goes through your MCP client rather than a global install: point it at skills 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.
This sits in the knowledge and memory group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Geargrafx's toolset — BIOS, Windows, macOS and 2 more — is a fair guide to whether it matches your workflow. It is maintained by drhelius; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against Geargrafx's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| BIOS | Geargrafx requires a BIOS to run CD-ROM games. It is possible to load any BIOS but the System Card 3.0 with md5 38179df8f4ac870017db21ebcbf53114 is recommended. |
| Windows | The Windows tool exposed by this server. |
| macOS | The macOS tool exposed by this server. |
| Linux | If you are using Ubuntu 25.04 or later, you can install SDL3 directly. Use the following commands to build: |
| Libretro | The Libretro tool exposed by this server. |
{
"mcpServers": {
"geargrafx": {
"command": "npx",
"args": ["-y", "skills"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
A knowledge graph your assistant keeps between sessions — entities, relations and observations that persist.
Kill hallucinated APIs — version-accurate, up-to-date library documentation injected straight into context.
Your workspace, on speaking terms with AI — search, read and write Notion pages and databases.
A structured scratchpad for hard problems — stepwise reasoning with revisions, branches and visible logic.
Symbol-level code navigation, refactoring and memory for coding agents — the IDE brain your assistant has been missing.
Chat with your second brain — search, read and write vault notes through the Local REST API.