get_marketplace

THE RISK

Low Risk

Why get_marketplace needs a policy

This tool queries and retrieves marketplace data and configuration without creating, modifying, deleting, or executing any actions. It is a straightforward Read operation. The low severity reflects that marketplace metadata typically poses minimal risk even if accessed by an agent without explicit authorization, as such information is usually non-sensitive operational data.

From the tool's definition Tool name is 'get_marketplace' and description states 'Get marketplace information and settings' — a retrieval operation with no side effects.

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

POLICY

How to control get_marketplace

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Ap2, and nothing reaches the server without passing your rules. This is the rule we recommend for get_marketplace:

policy.json

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

get_marketplace 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 Mcp Ap2 — 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

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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 get_marketplace

What does the get_marketplace tool do? +

Get marketplace information and settings. It is categorised as a Read tool in the Mcp Ap2 MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_marketplace? +

Register the Mcp Ap2 MCP server in PolicyLayer and add a rule for get_marketplace: 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 Mcp Ap2. Nothing to install.

What risk level is get_marketplace? +

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

Can I rate-limit get_marketplace? +

Yes. Add a rate_limit block to the get_marketplace 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_marketplace completely? +

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

get_marketplace is provided by the Mcp Ap2 MCP server (@codespar/mcp-ap2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Ap2 tool call.

Start from Mcp Ap2, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →