rent_energy

Rent energy from JustLend for a specified receiver address.

SERVERJustlend SOURCEjustlend/mcp-server-justlend

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/justlend-mcp-server-justlend/rent-energy.md

WHAT IT DOES

What rent_energy does on Justlend

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

RISK

Why rent_energy is rated Critical

Renting energy from JustLend involves a financial transaction on the TRON blockchain — it commits TRX resources/funds to pay for energy rental. This is a financial commitment that moves or locks assets, making it a Financial category action with high severity since an AI agent could misuse it to spend user funds on energy rentals for arbitrary addresses.

From the tool's definition Rent energy from JustLend for a specified receiver address

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs rent_energy safely

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

rent_energy Approval-gated

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

FAQ

Questions about rent_energy

What does the rent_energy tool do? +

Rent energy from JustLend for a specified receiver address. It is categorised as a Financial tool in the Justlend MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on rent_energy? +

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

What risk level is rent_energy? +

rent_energy 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 rent_energy? +

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

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

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

KEEP EXPLORING

More on Justlend, and thousands of servers like it.

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Guides

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