AI agents call analyze_fulltext_access to retrieve information from Pubmed Search without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name contains the verb 'analyze', which typically performs assessment or inspection without altering data. The server is a research assistant providing literature search and analysis—core functions are read operations.
From the tool's definition Tool name 'analyze_fulltext_access' paired with description that is empty. Contextual inference from sibling tools (analyze_clinical_question, analyze_search_query, build_citation_tree) suggests analytical/inspection functions rather than modification.
Documented attack patterns abuse exactly the kind of access analyze_fulltext_access gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Pubmed Search, and nothing reaches the server without passing your rules. This is the rule we recommend for analyze_fulltext_access:
{
"version": "1",
"default": "deny",
"tools": {
"analyze_fulltext_access": {}
}
}analyze_fulltext_access is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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analyze_fulltext_access. It is categorised as a Read tool in the Pubmed Search MCP Server, which means it retrieves data without modifying state.
Register the Pubmed Search MCP server in PolicyLayer and add a rule for analyze_fulltext_access: 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 Pubmed Search. Nothing to install.
analyze_fulltext_access 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 analyze_fulltext_access 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 analyze_fulltext_access. 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.
analyze_fulltext_access is provided by the Pubmed Search MCP server (u9401066/pubmed-search-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Pubmed Search, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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63 Pubmed Search tools catalogued and risk-classified — across an index of 43,000+ MCP servers.