Get warnings, contraindications, and adverse reactions for a drug.
AI agents call get_drug_warnings to retrieve information from Pharmacy MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns reference information about drug safety data. It performs no mutations, executions, deletions, or financial transactions. The worst-case misuse would be retrieving inaccurate information for educational/reference purposes, which poses minimal harm compared to write, execute, or destructive operations.
From the tool's definition The tool description states it 'Get[s] warnings, contraindications, and adverse reactions for a drug' — purely a retrieval operation with no side effects or modifications to any system state.
Attacks that exploit this kind of access
Get warnings, contraindications, and adverse reactions for a drug. It is categorised as a Read tool in the Pharmacy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Pharmacy MCP Server MCP server in PolicyLayer and add a rule for get_drug_warnings: 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 Pharmacy MCP Server. Nothing to install.
get_drug_warnings 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_drug_warnings 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_drug_warnings. 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_drug_warnings is provided by the Pharmacy MCP Server MCP server (u9401066/pharmacy-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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