marketplace_get_listing
AI agents call marketplace_get_listing to retrieve information from Loreto without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool appears to retrieve marketplace listing metadata, which is a read operation with no side effects. No data is created, modified, deleted, or financial transactions occur. Even if misused by an agent, querying listing data poses minimal security risk to the system or user.
From the tool's definition Tool name 'marketplace_get_listing' suggests retrieval of marketplace listing data. Sibling tools like 'list_skills', 'get_skill', and 'get_quota' are all read operations on the Loreto marketplace.
Documented attack patterns abuse exactly the kind of access marketplace_get_listing gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Loreto, and nothing reaches the server without passing your rules. This is the rule we recommend for marketplace_get_listing:
{
"version": "1",
"default": "deny",
"tools": {
"marketplace_get_listing": {}
}
}marketplace_get_listing is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
marketplace_get_listing. It is categorised as a Read tool in the Loreto MCP Server, which means it retrieves data without modifying state.
Register the Loreto MCP server in PolicyLayer and add a rule for marketplace_get_listing: 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 Loreto. Nothing to install.
marketplace_get_listing 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 marketplace_get_listing 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 marketplace_get_listing. 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.
marketplace_get_listing is provided by the Loreto MCP server (kopias/loreto-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Loreto, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
13 Loreto tools catalogued and risk-classified — across an index of 43,000+ MCP servers.