Geargrafx MCP Server

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 AI debugging and development.

People who work with bsd, emulator and libretro and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in C++.

VERIFIED ACTIVE

LAST COMMIT 2026-09-16 · ★ 238 · #98 OF 168 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-09-18

GPL-3.0 · C++ · how we verify → /methodology

01 · Install Geargrafx MCP Server

before you install - you'll need

Set SDL3_TAG, USE_CLANG before connecting.

Claude Desktop

Settings → Extensions → Install, then select the https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-macos-arm64.mcpb .mcpb bundle

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as Claude Desktop extension (.mcpb bundle)

license GPL-3.0 - declared in the repository

registry namespace io.github.drhelius is GitHub-verified and matches the repo owner

03 · What Geargrafx MCP Server can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

1.7.22 · 2026-09-05

Improved PSG audio accuracy · Fixed VSync audio underruns in faster refresh rates · Improved Arcade Card compatibility · Bug fixes and improvements

1.7.21 · 2026-09-03

Added Ogg Vorbis audio support in CD-ROM images

1.7.20 · 2026-09-01

New iOS App (in development) · Better VSync at different refresh rates · Minimized input lag with 120, 144 and 240 Hz screens · Updated Game Controller DB · Improved debugger tools · Improved BIOS loader · Many bug…

04 · Who maintains Geargrafx MCP Server

Geargrafx MCP Server is maintained by drhelius. We track 4 MCP servers from drhelius - 4 actively maintained, 1,971 combined GitHub stars, oldest repo from Jul 2012. Full record: all servers from drhelius.

05 · Facts

repository: github.com/drhelius/geargrafx
category: developer tools - ranked #98 of 168 actively-maintained developer tools servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-05)
registry: io.github.drhelius/geargrafx (active, first published 2025-12-13 · 29 versions)
packages: mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-macos-arm64.mcpb · mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-macos-x64.mcpb · mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-windows-arm64.mcpb · mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-windows-x64.mcpb · mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-linux-x64.mcpb · mcpb:https://github.com/drhelius/geargrafx/releases/download/1.7.22/Geargrafx-1.7.22-mcpb-linux-arm64.mcpb

06 · Geargrafx MCP Server FAQ

What is Geargrafx MCP Server?

Is Geargrafx MCP Server still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-16 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

07 · Alternatives to Geargrafx MCP Server

Alternatives to Geargrafx MCP Server

Maintained developer tools servers if Geargrafx MCP Server isn't the fit.

Pairs well with

Servers that cover what Geargrafx MCP Server doesn't - only shown when the pairing reason fits the companion.

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