List all entities in the research timeline with their claim count and last update.
AI agents call list_research_entities to retrieve information from Metis Public Health without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about entities and their associated claim counts from the user's local research timeline. It performs no creation, modification, deletion, or execution of external operations. The blast radius of misuse is minimal — an agent could at most enumerate entities the user has already indexed, which does not expose sensitive external systems or enable destructive actions.
From the tool's definition Tool description states it 'List[s] all entities in the research timeline' — a retrieval operation with no modification or side effects. The verb 'list' and the read-only nature (viewing claim counts and timestamps) confirm this is a query function.
Attacks that exploit this kind of access
List all entities in the research timeline with their claim count and last update. It is categorised as a Read tool in the Metis Public Health MCP Server, which means it retrieves data without modifying state.
Register the Metis Public Health MCP server in PolicyLayer and add a rule for list_research_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 Metis Public Health. Nothing to install.
list_research_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 list_research_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 list_research_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.
list_research_entities is provided by the Metis Public Health MCP server (sveritg/metis_ph). 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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