Find RxNorm mappings for drugs that belong to a specific pharmacologic class SET ID
AI agents call get_rxnorm_mappings_by_pharmacologic_class to retrieve information from DailyMed 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 pharmaceutical reference data (RxNorm mappings) from the FDA DailyMed database based on a pharmacologic class identifier. It is a read-only query operation that returns information without side effects, data modification, or triggering external actions. No user data is created, modified, or deleted.
From the tool's definition Tool name 'get_rxnorm_mappings_by_pharmacologic_class' and description 'Find RxNorm mappings for drugs that belong to a specific pharmacologic class SET ID' indicate a retrieval/query operation with no modification, deletion, or execution of external code.
Attacks that exploit this kind of access
Find RxNorm mappings for drugs that belong to a specific pharmacologic class SET ID. It is categorised as a Read tool in the DailyMed MCP Server MCP Server, which means it retrieves data without modifying state.
Register the DailyMed MCP Server MCP server in PolicyLayer and add a rule for get_rxnorm_mappings_by_pharmacologic_class: 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 DailyMed MCP Server. Nothing to install.
get_rxnorm_mappings_by_pharmacologic_class 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_rxnorm_mappings_by_pharmacologic_class 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_rxnorm_mappings_by_pharmacologic_class. 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_rxnorm_mappings_by_pharmacologic_class is provided by the DailyMed MCP Server MCP server (rowanerasmus/dailymed-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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