List the Power BI workspaces available to the signed-in Microsoft account.
AI agents call powerbi_list_workspaces to retrieve information from Power BI MCP for Claude without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves metadata about Power BI workspaces accessible to the authenticated user. It has no side effects, does not modify data, execute code, or move funds. The blast radius of misuse is minimal—an attacker could discover workspace names and structure, but cannot alter or exfiltrate sensitive data beyond workspace enumeration. Classification as Read is appropriate.
From the tool's definition Tool description states it 'List[s] the Power BI workspaces' with no modification, creation, deletion, or execution capability. The verb 'list' is a retrieval operation.
Attacks that exploit this kind of access
List the Power BI workspaces available to the signed-in Microsoft account. It is categorised as a Read tool in the Power BI MCP for Claude MCP Server, which means it retrieves data without modifying state.
Register the Power BI MCP for Claude MCP server in PolicyLayer and add a rule for powerbi_list_workspaces: 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 Power BI MCP for Claude. Nothing to install.
powerbi_list_workspaces 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 powerbi_list_workspaces 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 powerbi_list_workspaces. 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.
powerbi_list_workspaces is provided by the Power BI MCP for Claude MCP server (robertoamoreno/powerbi-mcp-claude). 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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