Get all phone numbers for a specific person in PCO. Args: - person_id (string): The PCO person ID - response_format (
AI agents call pco_list_person_phone_numbers to retrieve information from Planning Center Online 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 returns phone number data for a person—a read-only operation with no capability to create, modify, delete, or execute actions. The blast radius is minimal since it merely exposes existing contact information accessible within a person's profile in Planning Center Online.
From the tool's definition Tool name 'pco_list_person_phone_numbers' and description 'Get all phone numbers for a specific person in PCO' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
Get all phone numbers for a specific person in PCO. Args: - person_id (string): The PCO person ID - response_format (. It is categorised as a Read tool in the Planning Center Online MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Planning Center Online MCP Server MCP server in PolicyLayer and add a rule for pco_list_person_phone_numbers: 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 Planning Center Online MCP Server. Nothing to install.
pco_list_person_phone_numbers 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 pco_list_person_phone_numbers 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 pco_list_person_phone_numbers. 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.
pco_list_person_phone_numbers is provided by the Planning Center Online MCP Server MCP server (tracsoftllc/pco-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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