AI agents call show_subscription_details to retrieve information from PayPal without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool only retrieves/reads subscription information with no side effects. Despite being on a financial platform (PayPal), this tool performs a read-only operation and does not move money or modify any data.
From the tool's definition Retrieve details of a specific subscription
Documented attack patterns abuse exactly the kind of access show_subscription_details gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and PayPal, and nothing reaches the server without passing your rules. This is the rule we recommend for show_subscription_details:
{
"version": "1",
"default": "deny",
"tools": {
"show_subscription_details": {}
}
}show_subscription_details is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieve details of a specific subscription. It is categorised as a Read tool in the PayPal MCP Server, which means it retrieves data without modifying state.
Register the PayPal MCP server in PolicyLayer and add a rule for show_subscription_details: 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 PayPal. Nothing to install.
show_subscription_details 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 show_subscription_details 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 show_subscription_details. 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.
show_subscription_details is provided by the PayPal MCP server (paypal/agent-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 30 PayPal tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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30 PayPal tools catalogued and risk-classified — across an index of 42,500+ MCP servers.