Retrieve previously stored PubMed search results with pagination
AI agents call retrieve_pubmed_results to retrieve information from Enhanced PubMed MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only accesses existing data (search history stored in SQLite) and returns paginated results. It has no capability to create, modify, delete, or execute any operations. The blast radius of misuse is minimal—an agent could retrieve search results it shouldn't see, which is a confidentiality concern but not severe enough to exceed low severity given the context of PubMed (public scientific literature).
From the tool's definition Tool retrieves previously stored PubMed search results with pagination. The verb 'retrieve' combined with 'previously stored results' and pagination capability indicate a query/fetch operation with no side effects.
Attacks that exploit this kind of access
Retrieve previously stored PubMed search results with pagination. It is categorised as a Read tool in the Enhanced PubMed MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Enhanced PubMed MCP Server MCP server in PolicyLayer and add a rule for retrieve_pubmed_results: 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 Enhanced PubMed MCP Server. Nothing to install.
retrieve_pubmed_results 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 retrieve_pubmed_results 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 retrieve_pubmed_results. 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.
retrieve_pubmed_results is provided by the Enhanced PubMed MCP Server MCP server (masa061580/enhanced-pubmed-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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