AI agents use update_script to create or update resources in Unity MCP with Ollama Integration — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unity MCP with Ollama Integration environment.
Updating a script modifies code in a reversible manner without deletion or irreversible effects. This is a Write operation that changes project files. Severity is high because malicious script modifications could introduce vulnerabilities, alter game logic, or compromise the entire project, with significant blast radius if an AI agent updates critical scripts without proper validation.
From the tool's definition Tool name 'update_script' combined with sibling tools that modify Unity assets (create_script, attach_script, create_prefab, apply_prefab, create_object) indicates this modifies code files within a Unity project.
Documented attack patterns abuse exactly the kind of access update_script gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Unity MCP with Ollama Integration, and nothing reaches the server without passing your rules. This is the rule we recommend for update_script:
{
"version": "1",
"default": "deny",
"tools": {
"update_script": {
"limits": [
{
"counter": "update_script_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}update_script 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.
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update_script. It is categorised as a Write tool in the Unity MCP with Ollama Integration MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Unity MCP with Ollama Integration MCP server in PolicyLayer and add a rule for update_script: 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 Unity MCP with Ollama Integration. Nothing to install.
update_script is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the update_script 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.
Set action: deny in the PolicyLayer policy for update_script. 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.
update_script is provided by the Unity MCP with Ollama Integration MCP server (zundamonnovrchatkaisetu/unity-mcp-ollama). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Unity MCP with Ollama Integration, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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37 Unity MCP with Ollama Integration tools catalogued and risk-classified — across an index of 43,000+ MCP servers.