upload_object

Upload and create an new object to an Object Storage bucket

SERVERLinode MCP Server SOURCEtakashito/linode-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/takashito-linode-mcp-server/upload-object.md

WHAT IT DOES

What upload_object does on Linode MCP Server

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

RISK

Why upload_object is rated Medium

The tool creates or adds new objects to cloud storage, which is a reversible write operation. While it modifies the storage state, it does not delete, destroy, or execute arbitrary code. The severity is medium because an agent uploading malicious files, sensitive data, or excessive amounts of data could cause problems, but the operation itself is reversible (objects can be deleted).

From the tool's definition Tool name is 'upload_object' and description states 'Upload and create an new object to an Object Storage bucket' — this creates new data in cloud storage.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs upload_object safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Linode MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For upload_object, this is the rule to start with:

upload_object Rate-limited

upload_object 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_object": {
      "limits": [
        {
          "counter": "upload_object_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Linode MCP Server, apply this rule, and every upload_object call is checked against it from then on.

FAQ

Questions about upload_object

What does the upload_object tool do? +

Upload and create an new object to an Object Storage bucket. It is categorised as a Write tool in the Linode 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_object? +

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

What risk level is upload_object? +

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

Can I rate-limit upload_object? +

Yes. Add a rate_limit block to the upload_object 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_object completely? +

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

upload_object is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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