AI agents call list_role_bindings to retrieve information from K8s without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates RoleBinding resources from Kubernetes, which define access permissions. While it is a read operation (not write, execute, or destructive), the severity is high because role bindings control who can perform actions in the cluster—exposing this information could help an attacker understand the attack surface and identify privilege escalation paths.
From the tool's definition Tool name 'list_role_bindings' indicates a query operation that retrieves Kubernetes RBAC (Role-Based Access Control) configuration. The 'list' prefix strongly suggests a read operation with no side effects.
Attacks that exploit this kind of access
list_role_bindings. It is categorised as a Read tool in the K8s MCP Server, which means it retrieves data without modifying state.
Register the K8s MCP server in PolicyLayer and add a rule for list_role_bindings: 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 K8s. Nothing to install.
list_role_bindings 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_role_bindings 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_role_bindings. 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_role_bindings is provided by the K8s MCP server (jingyanjiang/k8s-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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