hydra_launch_game · Hydra Bridge MCP: Risk & Policy

WHAT IT DOES

What hydra_launch_game does on Hydra Bridge

AI agents invoke hydra_launch_game to trigger actions in Hydra Bridge. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why hydra_launch_game needs a policy

Launching a game is executing an arbitrary external program whose behavior and side-effects depend entirely on what that game does. Games can access system resources, modify files, run scripts, or perform other unintended actions. While not inherently destructive, the blast radius is significant because the agent loses control once the game process starts.

From the tool's definition Tool name 'hydra_launch_game' and description 'Launch a game from the library (auto-detects native ELF vs Proton)' directly indicates execution of external applications/processes.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

hydra_launch_game Rate-limited

hydra_launch_game stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hydra_launch_game": {
      "limits": [
        {
          "counter": "hydra_launch_game_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Hydra Bridge, so you can run agents against it safely.

FAQ

Questions about hydra_launch_game

What does the hydra_launch_game tool do? +

Launch a game from the library (auto-detects native ELF vs Proton). It is categorised as a Execute tool in the Hydra Bridge MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on hydra_launch_game? +

Register the Hydra Bridge MCP server in PolicyLayer and add a rule for hydra_launch_game: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Hydra Bridge. Nothing to install.

What risk level is hydra_launch_game? +

hydra_launch_game is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit hydra_launch_game? +

Yes. Add a rate_limit block to the hydra_launch_game rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block hydra_launch_game completely? +

Set action: deny in the PolicyLayer policy for hydra_launch_game. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides hydra_launch_game? +

hydra_launch_game is provided by the Hydra Bridge MCP server (kleirrampage45/hydra-bridge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.