List all visual calculations on a visual. Visual calculations are DAX expressions scoped to the visual context (e.g. running totals, ranks).
AI agents call pbir_list_visual_calculations to retrieve information from Power BI Report MCP Server 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 existing visual calculations (DAX expressions) from a Power BI visual without creating, modifying, deleting, or executing any operations. It is a pure query that returns information about the structure of a visual. There is no data modification, code execution with external effects, deletion, or financial impact.
From the tool's definition Tool name 'pbir_list_visual_calculations' and description 'List all visual calculations on a visual' indicate a retrieval operation with no modification or side effects. The verb 'list' is explicitly a Read operation.
Attacks that exploit this kind of access
List all visual calculations on a visual. Visual calculations are DAX expressions scoped to the visual context (e.g. running totals, ranks). It is categorised as a Read tool in the Power BI Report MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Power BI Report MCP Server MCP server in PolicyLayer and add a rule for pbir_list_visual_calculations: 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 Report MCP Server. Nothing to install.
pbir_list_visual_calculations 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 pbir_list_visual_calculations 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 pbir_list_visual_calculations. 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.
pbir_list_visual_calculations is provided by the Power BI Report MCP Server MCP server (jonathan-pap/powerbi-report-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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