Dev builds MCP server that lets Claude play GTA IV/V in the background autonomously
Wonderful-Ad-8579 · reddit · 2026-11-09
A Reddit user built an MCP server with Claude Code that gives Claude its own keyboard, mouse, gamepad and screen capture inside a game, running in the background so the PC stays usable.
- Demoed: real-time unedited footage of Claude driving to a waypoint in GTA IV, flying and landing a helicopter in GTA V, plus Detroit: Become Human, TABS, Halo Wars 2, Phantom Rose and Cities: Skylines
- Architecture: an in-game DLL for input/capture plus a TypeScript MCP server with 100 tools; each Claude agent gets one game as a test bed, plays via MCP, finds tool bugs, fixes code, and measures before/after on the same route
- New game support is mostly data: per-game profiles (minimap location, camera behavior, waypoint style) written largely by the agents themselves
Limitations: struggles indoors without a minimap, aiming in shooters is early, no full playthroughs yet. Windows-only (DLL), single-player/offline games only. MIT licensed, works with any MCP client.
Related event: Open-source MCP server lets Claude autonomously play GTA V(2 posts)→
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