upload_cloudcast · Mixcloud MCP: Risk & Policy

WHAT IT DOES

What upload_cloudcast does on Mixcloud

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

WHY IT NEEDS A POLICY

Why upload_cloudcast needs a policy

This tool creates new content on Mixcloud, making it a Write operation. It is reversible (uploads can be deleted), so it does not qualify as Destructive. Severity is medium because misuse could result in uploading unauthorized, malicious, or copyrighted content to a public platform, but the impact is limited to content creation rather than financial harm or system compromise.

From the tool's definition Tool description states 'Upload a recording to Mixcloud', which creates new data (a cloudcast) on the Mixcloud platform. The file picker UI indicates user-directed file submission.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

upload_cloudcast Rate-limited

upload_cloudcast 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_cloudcast": {
      "limits": [
        {
          "counter": "upload_cloudcast_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 Mixcloud, so you can run agents against it safely.

FAQ

Questions about upload_cloudcast

What does the upload_cloudcast tool do? +

Upload a recording to Mixcloud. Opens a file picker UI. It is categorised as a Write tool in the Mixcloud 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_cloudcast? +

Register the Mixcloud MCP server in PolicyLayer and add a rule for upload_cloudcast: 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 Mixcloud. Nothing to install.

What risk level is upload_cloudcast? +

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

Can I rate-limit upload_cloudcast? +

Yes. Add a rate_limit block to the upload_cloudcast 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_cloudcast completely? +

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

upload_cloudcast is provided by the Mixcloud MCP server (nelsonra/mixcloud-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.