dsh-game-agent

A DeepSeek Harness plugin that exposes a loopback WebSocket gateway for game mods. The first adapter is stardew-agent-mod.

Current demo

Stardew Valley SMAPI mod
  -> ws://127.0.0.1:32145 (JSON-RPC 2.0)
  -> dsh-game-agent
  -> DeepSeek Harness Agent
  -> reply shown inside Stardew Valley

The gateway binds only to loopback. Version 0.1.0 supports complete text replies; token streaming and game tools are intentionally deferred.

Develop

Requirements: Node.js 22.19+ and pnpm.

pnpm install
pnpm check

Install into a local DeepSeek Harness profile

From this checkout:

dsh plugin --profile game add .
dsh --profile game

If dsh is not installed globally, use the matching npx @deepseek-ai/dsh@0.1.0-rc.6 ... command. DeepSeek Harness is currently a developer preview, so this plugin pins its tested API generation to 0.1.0-rc.6.

Configure a model and credentials in DeepSeek Harness before sending chat messages. The plugin uses the profile's selected default model; it does not store a separate API key.

Protocol

The game mod connects to ws://127.0.0.1:32145, calls adapter.hello, then sends:

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "chat.send",
  "params": {
    "text": "你好",
    "context": {
      "playerName": "Farmer",
      "location": "Farm",
      "nearbyNpc": "Abigail"
    }
  }
}

The result contains reply and sessionId.

License

MIT