upgrade_plan

Change this account

SERVERHermoso SOURCEhttps://app.hermoso.ai/mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/hermoso/upgrade-plan.md

WHAT IT DOES

What upgrade_plan does on Hermoso

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

RISK

Why upgrade_plan is rated Critical

Despite the minimal description, the tool name 'upgrade_plan' combined with the server's commercial context (ad generation SaaS with billing tools) strongly implies this changes a subscription tier, incurring recurring financial commitments. Sibling tools 'billing_status' and 'buy_credits' confirm a financial system is present. Upgrading a plan is a Financial action as it commits the account to recurring charges.

From the tool's definition 'upgrade_plan' and 'Change this account' — in the context of a billing/subscription platform (sibling tools include 'billing_status' and 'buy_credits'), upgrading a plan commits financial obligations

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs upgrade_plan safely

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

upgrade_plan Approval-gated

Any call to upgrade_plan 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": {
    "upgrade_plan": {
      "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 Hermoso, apply this rule, and every upgrade_plan call is checked against it from then on.

FAQ

Questions about upgrade_plan

What does the upgrade_plan tool do? +

Change this account. It is categorised as a Financial tool in the Hermoso MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on upgrade_plan? +

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

What risk level is upgrade_plan? +

upgrade_plan 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 upgrade_plan? +

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

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

upgrade_plan is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Hermoso, and thousands of servers like it.

This server

All 896 Hermoso 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 →