write_global · GTAV-CLAUDE- MCP: Risk & Policy

WHAT IT DOES

What write_global does on GTAV-CLAUDE-MCP

AI agents use write_global to create or update resources in GTAV-CLAUDE-MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GTAV-CLAUDE-MCP environment.

WHY IT NEEDS A POLICY

Why write_global needs a policy

This tool writes to GTA V's script VM global variables, which control core gameplay state. While technically a write operation (reversible in the sense the game can be restarted or values overwritten), modifying globals can unpredictably alter gameplay mechanics, missions, or internal state in ways that may be hard to reverse mid-session.

From the tool's definition 'Write a script-VM Global_<index>' and 'globals drive gameplay state'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

write_global Rate-limited

write_global stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "write_global": {
      "limits": [
        {
          "counter": "write_global_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about write_global

What does the write_global tool do? +

Write a script-VM Global_<index>. Confirm with the user first - globals drive gameplay state. It is categorised as a Write tool in the GTAV-CLAUDE-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on write_global? +

Register the GTAV-CLAUDE- MCP server in PolicyLayer and add a rule for write_global: 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 GTAV-CLAUDE-MCP. Nothing to install.

What risk level is write_global? +

write_global is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit write_global? +

Yes. Add a rate_limit block to the write_global 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 write_global completely? +

Set action: deny in the PolicyLayer policy for write_global. 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 write_global? +

write_global is provided by the GTAV-CLAUDE- MCP server (tabbedscamper/gtav-claude-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.