Get list of promotions/coupons
AI agents call whmcs_get_promotions to retrieve information from Whmcs without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries existing promotion/coupon data from WHMCS without modifying, deleting, or executing any operations. It is a straightforward read operation with minimal security risk even if an AI agent calls it unexpectedly.
From the tool's definition Tool name contains 'get' and description states 'Get list of promotions/coupons' — retrieves data with no side effects.
Documented attack patterns abuse exactly the kind of access whmcs_get_promotions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Whmcs, and nothing reaches the server without passing your rules. This is the rule we recommend for whmcs_get_promotions:
{
"version": "1",
"default": "deny",
"tools": {
"whmcs_get_promotions": {}
}
}whmcs_get_promotions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get list of promotions/coupons. It is categorised as a Read tool in the Whmcs MCP Server, which means it retrieves data without modifying state.
Register the Whmcs MCP server in PolicyLayer and add a rule for whmcs_get_promotions: 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 Whmcs. Nothing to install.
whmcs_get_promotions is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the whmcs_get_promotions 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.
Set action: deny in the PolicyLayer policy for whmcs_get_promotions. 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.
whmcs_get_promotions is provided by the Whmcs MCP server (scarecr0w12/whmcs-mcp-tool). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Whmcs, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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