List all available Elasticsearch indices with detailed information
AI agents call list_indices to retrieve information from Octodet Elasticsearch 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 Elasticsearch cluster metadata to enumerate indices. There are no side effects, no data modification, and no destructive operations. The blast radius of misuse is minimal—it only exposes the names and metadata of existing indices, which typically does not cause harm. It belongs in the Read category.
From the tool's definition Tool name 'list_indices' and description 'List all available Elasticsearch indices with detailed information' indicate a retrieval operation with no data modification or deletion.
Attacks that exploit this kind of access
List all available Elasticsearch indices with detailed information. It is categorised as a Read tool in the Octodet Elasticsearch MCP Server, which means it retrieves data without modifying state.
Register the Octodet Elasticsearch MCP server in PolicyLayer and add a rule for list_indices: 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 Octodet Elasticsearch. Nothing to install.
list_indices 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_indices 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_indices. 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_indices is provided by the Octodet Elasticsearch MCP server (octodet/elasticsearch-mcp). 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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