get_coupon

Get coupon details by ID or code

SERVERGhl SOURCEghl-mcp-server

Low RISK CLASS

Category Read

Parameters 44 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/ghl/get-coupon.md

WHAT IT DOES

What get_coupon does on Ghl

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

Parameter	Type	Required	Description
`id`	string	Yes	Coupon ID
`code`	string	Yes	Coupon code
`altId`	string	Yes	Location ID
`altType`	string	Yes	Alt Type

Parameters from the server's own tool schema.

RISK

Why get_coupon is rated Low

This tool queries and retrieves coupon information without creating, modifying, deleting, or executing any operations. It is purely a read operation that returns data to the caller.

From the tool's definition Tool description states 'Get coupon details by ID or code' — a retrieval operation with no modification or side effects.

Risk signalsAccepts freeform code/query input (code)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_coupon safely

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

get_coupon Allowed

get_coupon 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_coupon": {}
  }
}

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

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

FAQ

Questions about get_coupon

What does the get_coupon tool do? +

Get coupon details by ID or code. It is categorised as a Read tool in the Ghl MCP Server, which means it retrieves data without modifying state.

What parameters does get_coupon accept? +

get_coupon accepts 4 parameters: id, code, altId, altType. Required: id, code, altId, altType. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on get_coupon? +

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

What risk level is get_coupon? +

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

Can I rate-limit get_coupon? +

Yes. Add a rate_limit block to the get_coupon 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_coupon completely? +

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

get_coupon is provided by the Ghl MCP server (ghl-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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