AI agents call list-client-roles to retrieve information from Keycloak without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of roles associated with a client in Keycloak. It performs a read-only operation with no side effects, no data modification, and no execution of external commands. The blast radius is minimal as it only exposes role metadata already within the system. Low severity is appropriate for information disclosure of authorization data.
From the tool's definition Tool name 'list-client-roles' and description 'List roles in a specific client' indicate a retrieval operation with no modification of data.
Attacks that exploit this kind of access
List roles in a specific client. It is categorised as a Read tool in the Keycloak MCP Server, which means it retrieves data without modifying state.
Register the Keycloak MCP server in PolicyLayer and add a rule for list-client-roles: 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 Keycloak. Nothing to install.
list-client-roles 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-client-roles 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-client-roles. 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-client-roles is provided by the Keycloak MCP server (keycloak-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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