Retrieve stored graph metrics for a specific entity. Returns PageRank score, betweenness centrality, degree centrality, community ID, entity type, and computation timestamp. Useful for understanding an entity
AI agents call get_entity_metrics to retrieve information from TDZ C64 Knowledge 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 analytical metrics about entities in a knowledge graph. It performs read-only operations that retrieve existing computational results without creating, modifying, deleting, or executing any external actions. The blast radius of misuse is minimal – an attacker could learn structural properties of the knowledge graph but cannot alter data or trigger operations.
From the tool's definition Tool name is 'get_entity_metrics' and description states 'Retrieve stored graph metrics' – the verb 'retrieve' and the focus on reading pre-computed metrics (PageRank, centrality scores, etc.) indicate pure data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Retrieve stored graph metrics for a specific entity. Returns PageRank score, betweenness centrality, degree centrality, community ID, entity type, and computation timestamp. Useful for understanding an entity. It is categorised as a Read tool in the TDZ C64 Knowledge MCP Server, which means it retrieves data without modifying state.
Register the TDZ C64 Knowledge MCP server in PolicyLayer and add a rule for get_entity_metrics: 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 TDZ C64 Knowledge. Nothing to install.
get_entity_metrics 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_entity_metrics 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_entity_metrics. 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_entity_metrics is provided by the TDZ C64 Knowledge MCP server (michaeltroelsen/tdz-c64-knowledge). 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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