upload_model · Rockfish MCP Server MCP: Risk & Policy

WHAT IT DOES

What upload_model does on Rockfish MCP Server

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

WHY IT NEEDS A POLICY

Why upload_model needs a policy

This tool creates or adds a new model to the Rockfish ML platform, which is a reversible Write operation. While uploading a model could have downstream effects if the model is subsequently used in workflows, the upload action itself is not destructive, financial, or immediately executable code.

From the tool's definition Tool name 'upload_model' and description 'Upload a new model' indicate creation/addition of a new artifact to the ML platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upload_model Rate-limited

upload_model 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": {
    "upload_model": {
      "limits": [
        {
          "counter": "upload_model_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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Instant setup, no code required.

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

FAQ

Questions about upload_model

What does the upload_model tool do? +

Upload a new model. It is categorised as a Write tool in the Rockfish MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on upload_model? +

Register the Rockfish MCP Server MCP server in PolicyLayer and add a rule for upload_model: 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 Rockfish MCP Server. Nothing to install.

What risk level is upload_model? +

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

Can I rate-limit upload_model? +

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

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

upload_model is provided by the Rockfish MCP Server MCP server (wolfdancer/rockfish-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.