Search PubMed Central (PMC) for full-text open access articles
AI agents call search_pmc_fulltext 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 retrieves and searches published biomedical literature from PubMed Central's open access database. It has no capability to modify, delete, or create data, nor does it execute arbitrary code or move money. The only risk is information disclosure of already-public academic articles, which is minimal since PMC content is openly accessible by design.
From the tool's definition Tool name 'search_pmc_fulltext' and description 'Search PubMed Central (PMC) for full-text open access articles' indicate a query/search operation with no modification of data.
Attacks that exploit this kind of access
Search PubMed Central (PMC) for full-text open access articles. 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 search_pmc_fulltext: 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.
search_pmc_fulltext 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 search_pmc_fulltext 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 search_pmc_fulltext. 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.
search_pmc_fulltext 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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