get_model_definition
AI agents call get_model_definition to retrieve information from Semantic Model MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves model definition information from Power BI/Fabric semantic models. While the description is empty, the name strongly suggests a read-only operation that queries model metadata. Severity is medium because exposed model definitions could reveal sensitive business logic or schema information useful for downstream attacks, but the operation itself has no side effects.
From the tool's definition Tool name 'get_model_definition' indicates retrieval of model metadata/structure; sibling tools include 'analyze_model_bpa', 'execute_dax_query', and 'explore_local_powerbi_columns', suggesting this retrieves model schema or definitions without modification.
Attacks that exploit this kind of access
get_model_definition. It is categorised as a Read tool in the Semantic Model MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Semantic Model MCP Server MCP server in PolicyLayer and add a rule for get_model_definition: 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 Semantic Model MCP Server. Nothing to install.
get_model_definition 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 get_model_definition 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 get_model_definition. 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.
get_model_definition is provided by the Semantic Model MCP Server MCP server (nahtheking/semantic-model-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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