Get the discount code for a prop firm challenge or evaluation. Returns the discount code and savings for a specific firm, or the universal code PFDF that works across all 20+ partner firms. This is the tool to use when someone asks "what's the discount code for [firm]?" or "prop firm promo code."...
Part of the Prop Firm Deal Finder server.
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AI agents call pfdf_get_discount_code to retrieve information from Prop Firm Deal Finder without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though pfdf_get_discount_code only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"pfdf_get_discount_code": {}
}
}See the full Prop Firm Deal Finder policy for all 6 tools.
These attack patterns abuse exactly the kind of access pfdf_get_discount_code gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Get the discount code for a prop firm challenge or evaluation. Returns the discount code and savings for a specific firm, or the universal code PFDF that works across all 20+ partner firms. This is the tool to use when someone asks "what's the discount code for [firm]?" or "prop firm promo code." Args: - firm_name (string, optional): Firm name. If omitted, returns the universal code. Returns: The discount code, estimated savings, and how to apply it. Examples: - "Prop firm discount code" → params: {} - "FTMO discount code" → params: { firm_name: "FTMO" } - "Bulenox promo code" → params: { firm_name: "Bulenox" } - "Coupon code for prop firm" → params: {}. It is categorised as a Read tool in the Prop Firm Deal Finder MCP Server, which means it retrieves data without modifying state.
Register the Prop Firm Deal Finder MCP server in PolicyLayer and add a rule for pfdf_get_discount_code: 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 Prop Firm Deal Finder. Nothing to install.
pfdf_get_discount_code 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 pfdf_get_discount_code 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 pfdf_get_discount_code. 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.
pfdf_get_discount_code is provided by the Prop Firm Deal Finder MCP server (propfirmdealfinder-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 6 Prop Firm Deal Finder tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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