list_products

THE RISK

Low Risk

Why list_products needs a policy

This tool retrieves and queries existing product data from Paystack without modifying, deleting, or executing transactions. Listing products is a read-only operation with no financial impact or irreversible consequences. Pagination support confirms it is a data retrieval utility.

From the tool's definition Tool name 'list_products' and description 'List products available on your Paystack integration with pagination support' indicate a retrieval operation with no side effects.

Documented attack patterns abuse exactly the kind of access list_products gives an agent:

POLICY

How to control list_products

PolicyLayer is an MCP gateway — it sits between your AI agents and Paystack, and nothing reaches the server without passing your rules. This is the rule we recommend for list_products:

policy.json

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

list_products is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Paystack — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_products

What does the list_products tool do? +

List products available on your Paystack integration with pagination support. It is categorised as a Read tool in the Paystack MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_products? +

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

What risk level is list_products? +

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

Can I rate-limit list_products? +

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

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

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

Enforce policy on every Paystack tool call.

Start from Paystack, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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