AI agents call get_marketplace_invoice to retrieve information from Vercel MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries existing invoice data from the marketplace without modifying, deleting, or executing any operations. It is a read-only operation that returns information. There is no indication it affects billing, processes payments, or makes financial commitments—it merely retrieves already-generated invoice records.
From the tool's definition Tool name is 'get_marketplace_invoice' with description 'Get marketplace invoice details'. The verb 'get' and the word 'details' clearly indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_marketplace_invoice gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Vercel MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_marketplace_invoice:
{
"version": "1",
"default": "deny",
"tools": {
"get_marketplace_invoice": {}
}
}get_marketplace_invoice is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get marketplace invoice details. It is categorised as a Read tool in the Vercel MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Vercel MCP Server MCP server in PolicyLayer and add a rule for get_marketplace_invoice: 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 Vercel MCP Server. Nothing to install.
get_marketplace_invoice 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 get_marketplace_invoice 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 get_marketplace_invoice. 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.
get_marketplace_invoice is provided by the Vercel MCP Server MCP server (quegenx/vercel-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 154 Vercel MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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154 Vercel MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.