List discount vouchers (max 100 items per page)
AI agents call list_vouchers to retrieve information from Upgates MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and lists existing voucher data without modifying, deleting, or executing any operations. It is a straightforward read operation typical of e-commerce API inventory queries. The pagination limit (max 100 items) further confirms this is a safe data retrieval function. No destructive, financial, or code execution capability is present.
From the tool's definition Tool name is 'list_vouchers' and description states 'List discount vouchers (max 100 items per page)' — this is a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
List discount vouchers (max 100 items per page). It is categorised as a Read tool in the Upgates MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Upgates MCP Server MCP server in PolicyLayer and add a rule for list_vouchers: 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 Upgates MCP Server. Nothing to install.
list_vouchers 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 list_vouchers 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 list_vouchers. 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.
list_vouchers is provided by the Upgates MCP Server MCP server (mcp-open/upgates-com-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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