Retrieve descendants for a given person ID
AI agents call get_descendants to retrieve information from WikiTree 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 and returns family relationship information from WikiTree's genealogical database. The verb 'Retrieve' and the context of a genealogy/biography API confirm this is a read-only operation with no side effects. Even when combined with sibling tools like get_ancestors and get_person, which are also read operations, there is no write, delete, or execution capability demonstrated.
From the tool's definition Tool name 'get_descendants' and description 'Retrieve descendants for a given person ID' indicate a query operation that retrieves genealogical data without modifying or deleting anything.
Attacks that exploit this kind of access
Retrieve descendants for a given person ID. It is categorised as a Read tool in the WikiTree MCP server MCP Server, which means it retrieves data without modifying state.
Register the WikiTree MCP server MCP server in PolicyLayer and add a rule for get_descendants: 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 WikiTree MCP server. Nothing to install.
get_descendants 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_descendants 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_descendants. 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_descendants is provided by the WikiTree MCP server MCP server (pewu/wikitree-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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