cloud_scale

Change Yaver Cloud plan tier.

SERVERYaver SOURCEyaver-cli

Critical RISK CLASS

Category Financial

Parameters 11 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-kivanccakmak-yaver/cloud-scale.md

WHAT IT DOES

What cloud_scale does on Yaver

AI agents use cloud_scale to commit financial operations through Yaver, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required	Description
`plan`	string	Yes

Parameters from the server's own tool schema.

RISK

Why cloud_scale is rated Critical

Changing a cloud plan tier directly commits to a different subscription level, which constitutes a financial obligation. Upgrading to a higher tier would incur additional charges, making this a Financial category action. The blast radius is high because an AI agent could silently upgrade to a more expensive plan tier without user awareness.

From the tool's definition Change Yaver Cloud plan tier

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cloud_scale safely

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

cloud_scale Approval-gated

Any call to cloud_scale is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cloud_scale": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about cloud_scale

What does the cloud_scale tool do? +

Change Yaver Cloud plan tier. It is categorised as a Financial tool in the Yaver MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does cloud_scale accept? +

cloud_scale accepts 1 parameter: plan. Required: plan. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on cloud_scale? +

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

What risk level is cloud_scale? +

cloud_scale is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit cloud_scale? +

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

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

cloud_scale is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Yaver, and thousands of servers like it.

This server

All 645 Yaver tools → Critical-risk tools on this server →

Across the catalogue

All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →