Get top-ranked entities by a specific metric (PageRank, betweenness, or degree centrality). Returns ranked list of entities with their scores, types, and other metrics. Useful for discovering the most important, central, or well-connected entities in the knowledge graph.
AI agents call get_top_entities 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 performs a read-only query of the knowledge graph to retrieve and rank entities by centrality metrics. It does not create, modify, delete, or execute any external operations—it only returns analytical results from existing data. This fits squarely within the Read category.
From the tool's definition Tool description: 'Get top-ranked entities by a specific metric...Returns ranked list of entities with their scores, types, and other metrics.' This is a retrieval and analysis operation that only reads from and queries the knowledge graph.
Attacks that exploit this kind of access
Get top-ranked entities by a specific metric (PageRank, betweenness, or degree centrality). Returns ranked list of entities with their scores, types, and other metrics. Useful for discovering the most important, central, or well-connected entities in the knowledge graph. 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_top_entities: 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_top_entities 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_top_entities 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_top_entities. 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_top_entities 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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