List all refunds with optional filtering
AI agents call list_refunds to retrieve information from Omise MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves refund records with optional filters, which is a read-only operation. It does not create, modify, delete, or execute any actions. While it may expose financial data, the tool itself performs no financial transactions or state changes. The blast radius of misuse is limited to data exposure rather than unauthorized financial movements or destructive actions.
From the tool's definition Tool name 'list_refunds' and description 'List all refunds with optional filtering' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all refunds with optional filtering. It is categorised as a Read tool in the Omise MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Omise MCP Server MCP server in PolicyLayer and add a rule for list_refunds: 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 Omise MCP Server. Nothing to install.
list_refunds 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_refunds 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_refunds. 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_refunds is provided by the Omise MCP Server MCP server (jun-omise/omise-mcp-alpha). 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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