Your seller metrics: total sales, downloads, skills listed, gross/net
AI agents call marketplace_my_metrics 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 queries and returns seller performance data (sales, downloads, listings, revenue figures). It is a read-only operation that retrieves existing metrics without creating, modifying, deleting, or executing any actions. The data returned is financial metrics, but the tool itself only reads/displays this information rather than moving money or creating financial obligations.
From the tool's definition Tool description explicitly states it retrieves 'Your seller metrics: total sales, downloads, skills listed, gross/net' — purely informational data retrieval with no modification or side effects.
Documented attack patterns abuse exactly the kind of access marketplace_my_metrics 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_my_metrics:
{
"version": "1",
"default": "deny",
"tools": {
"marketplace_my_metrics": {}
}
}marketplace_my_metrics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Your seller metrics: total sales, downloads, skills listed, gross/net. 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_my_metrics: 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_my_metrics 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_my_metrics 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_my_metrics. 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_my_metrics 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.