get_return_rental_info

Get estimated refund info for returning/canceling an energy rental.

SERVERJustlend SOURCEjustlend/mcp-server-justlend

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/justlend-mcp-server-justlend/get-return-rental-info.md

WHAT IT DOES

What get_return_rental_info does on Justlend

AI agents call get_return_rental_info to retrieve information from Justlend without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_return_rental_info is rated Low

This tool queries estimated refund data for an energy rental cancellation. It performs a read-only operation that returns information to inform a decision, but does not execute the actual return/cancellation or move funds. No side effects occur from calling this tool.

From the tool's definition Tool name contains 'get' and description states 'Get estimated refund info' — retrieves information without modifying state or triggering transactions.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_return_rental_info 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 get_return_rental_info, this is the rule to start with:

get_return_rental_info Allowed

get_return_rental_info is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_return_rental_info": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about get_return_rental_info

What does the get_return_rental_info tool do? +

Get estimated refund info for returning/canceling an energy rental. It is categorised as a Read tool in the Justlend MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_return_rental_info? +

Register the Justlend MCP server in PolicyLayer and add a rule for get_return_rental_info: 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 get_return_rental_info? +

get_return_rental_info is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_return_rental_info? +

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

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

get_return_rental_info 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.

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