Retrieve memberships from CiviCRM
AI agents call get_memberships to retrieve information from CiviCRM 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 membership data from CiviCRM without creating, modifying, or deleting any records. It is a read-only query operation with minimal security risk, as it only exposes existing membership information. The blast radius is limited to information disclosure, and only to data the user already has access to within CiviCRM's permission model.
From the tool's definition Tool name 'get_memberships' and description 'Retrieve memberships from CiviCRM' indicate a retrieval operation with no modification of data.
Attacks that exploit this kind of access
Retrieve memberships from CiviCRM. It is categorised as a Read tool in the CiviCRM MCP Server MCP Server, which means it retrieves data without modifying state.
Register the CiviCRM MCP Server MCP server in PolicyLayer and add a rule for get_memberships: 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 CiviCRM MCP Server. Nothing to install.
get_memberships 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_memberships 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_memberships. 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_memberships is provided by the CiviCRM MCP Server MCP server (johncallhub/civicrm-mcp-server). 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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