search_resources_by_labels
AI agents call search_resources_by_labels to retrieve information from Lumino MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The name pattern 'search_*' strongly suggests a retrieval operation with no side effects. In Kubernetes contexts, label-based resource searches are typically read-only queries used to discover and filter cluster resources. The medium severity reflects the potential for broad data exposure if an agent queries sensitive resources, but the blast radius is limited compared to write/execute operations.
From the tool's definition Tool name 'search_resources_by_labels' indicates a query/search operation. Tool description is empty, so functionality inferred from name alone. Context shows this is a Kubernetes/OpenShift observability tool, consistent with read-only resource discovery.
Attacks that exploit this kind of access
search_resources_by_labels. It is categorised as a Read tool in the Lumino MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Lumino MCP Server MCP server in PolicyLayer and add a rule for search_resources_by_labels: 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 Lumino MCP Server. Nothing to install.
search_resources_by_labels 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 search_resources_by_labels 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 search_resources_by_labels. 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.
search_resources_by_labels is provided by the Lumino MCP Server MCP server (lumino-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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