For the auto-fixable DAX anti-patterns (bare
AI agents call dax_suggest_rewrite to retrieve information from Power BI MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name implies suggestion/recommendation of DAX rewrites, not execution of them. 'Suggest' indicates a read/advisory operation that returns recommendations without modifying the model. The description is truncated so confidence is reduced, but the 'suggest' framing strongly implies no side effects. Severity is low since it only surfaces recommendations.
From the tool's definition Tool name 'dax_suggest_rewrite' and partial description mentioning 'auto-fixable DAX anti-patterns' — suggests the tool analyzes and recommends rewrites rather than applying them
Attacks that exploit this kind of access
For the auto-fixable DAX anti-patterns (bare. It is categorised as a Read tool in the Power BI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Power BI MCP Server MCP server in PolicyLayer and add a rule for dax_suggest_rewrite: 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 Server. Nothing to install.
dax_suggest_rewrite 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 dax_suggest_rewrite 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 dax_suggest_rewrite. 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.
dax_suggest_rewrite is provided by the Power BI MCP Server MCP server (sulaiman013/powerbi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.