Get cardholders belonging to a specific group. Results are paginated.
AI agents call pex_get_group_cardholders to retrieve information from PEX 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 cardholder information from a group without modifying, deleting, or executing any operations. It is a straightforward data retrieval operation that falls squarely into the Read category. While cardholder information could be sensitive, the tool itself performs no destructive or financial action—only enumeration.
From the tool's definition Tool name 'pex_get_group_cardholders' and description 'Get cardholders belonging to a specific group' indicate a retrieval operation with no side effects. The pagination mention further confirms this is a read-only query.
Attacks that exploit this kind of access
Get cardholders belonging to a specific group. Results are paginated. It is categorised as a Read tool in the PEX MCP Server MCP Server, which means it retrieves data without modifying state.
Register the PEX MCP Server MCP server in PolicyLayer and add a rule for pex_get_group_cardholders: 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 PEX MCP Server. Nothing to install.
pex_get_group_cardholders 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 pex_get_group_cardholders 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 pex_get_group_cardholders. 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.
pex_get_group_cardholders is provided by the PEX MCP Server MCP server (pexcard/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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