find_similar_entities
Find entities similar to a given entity using semantic similarity. Requires embedding provider.
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What find_similar_entities does on Enhanced Knowledge Graph Memory Server
AI agents call find_similar_entities to retrieve information from Enhanced Knowledge Graph Memory Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why find_similar_entities is rated Low
This tool queries the knowledge graph to retrieve information about semantically similar entities. It has no side effects, does not modify state, and does not execute external operations. It is a pure read operation that retrieves or searches data, matching the 'Read' category definition.
From the tool's definition Tool performs semantic similarity search on entities within the knowledge graph without creating, modifying, or deleting data.
Attacks that exploit this kind of access
The rule that runs find_similar_entities safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For find_similar_entities, this is the rule to start with:
find_similar_entities is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every find_similar_entities call is checked against it from then on.
Questions about find_similar_entities
Find entities similar to a given entity using semantic similarity. Requires embedding provider. It is categorised as a Read tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it retrieves data without modifying state.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for find_similar_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 Enhanced Knowledge Graph Memory Server. Nothing to install.
find_similar_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 find_similar_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 find_similar_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.
find_similar_entities is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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