Returns high-level overview of cluster statistics.
AI agents call get_cluster_stats to retrieve information from Elasticsearch/OpenSearch MCP Server 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 operation that fetches cluster statistics. It does not create, modify, delete, or execute any operations with side effects. The low severity reflects that cluster statistics are typically non-sensitive operational metadata that do not control critical functionality or expose sensitive business data. The high confidence is based on the clear read-only semantics of the operation.
From the tool's definition Tool name 'get_cluster_stats' and description 'Returns high-level overview of cluster statistics' indicate a retrieval operation that queries cluster metadata without modifying any data.
Attacks that exploit this kind of access
Returns high-level overview of cluster statistics. It is categorised as a Read tool in the Elasticsearch/OpenSearch MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Elasticsearch/OpenSearch MCP Server MCP server in PolicyLayer and add a rule for get_cluster_stats: 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 Elasticsearch/OpenSearch MCP Server. Nothing to install.
get_cluster_stats 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_cluster_stats 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_cluster_stats. 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_cluster_stats is provided by the Elasticsearch/OpenSearch MCP Server MCP server (rbedoyag/elasticsearch-mcp-server). 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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