AI agents call get_refund 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.
This tool retrieves information about an existing refund without modifying, creating, deleting, or processing any financial transactions. It is a data retrieval operation, making it a Read category tool with low severity since misuse would only expose financial information rather than enable unauthorized financial movements or destructive actions.
From the tool's definition Tool name is 'get_refund' and description states 'Get the details for a specific refund' — the verb 'Get' and action of retrieving details indicate a read-only query operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_refund 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 get_refund:
{
"version": "1",
"default": "deny",
"tools": {
"get_refund": {}
}
}get_refund is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the details for a specific refund. 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 get_refund: 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.
get_refund 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_refund 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_refund. 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_refund 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.
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30 PayPal tools catalogued and risk-classified — across an index of 42,500+ MCP servers.