List payment methods
AI agents call list_payments 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.
This tool retrieves or queries payment method data with no side effects. It follows the Read category pattern (list, get, fetch). While payment data is sensitive, the tool itself performs no mutations, financial transactions, or state changes.
From the tool's definition Tool name and description indicate retrieval action: 'list_payments' with description 'List payment methods' suggests querying/fetching existing payment method data without modification.
Attacks that exploit this kind of access
List payment methods. 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_payments: 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_payments 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_payments 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_payments. 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_payments 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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