Get links to free full text versions of an article (e.g., PubMed Central). Returns PMC links and publisher free-access URLs.
AI agents call get_full_text_links to retrieve information from Mcp Pubmed without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only retrieves and returns links to free full-text articles. It performs a read-only query against PubMed/NCBI metadata without creating, modifying, or deleting any data. The blast radius of misuse is minimal—an agent could only discover more links to existing public articles, which poses no meaningful security risk.
From the tool's definition Tool description states it 'Get links to free full text versions' and 'Returns PMC links and publisher free-access URLs'. This is purely retrieval of publicly available links with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Get links to free full text versions of an article (e.g., PubMed Central). Returns PMC links and publisher free-access URLs. It is categorised as a Read tool in the Mcp Pubmed MCP Server, which means it retrieves data without modifying state.
Register the Mcp Pubmed MCP server in PolicyLayer and add a rule for get_full_text_links: 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 Mcp Pubmed. Nothing to install.
get_full_text_links 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_full_text_links 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_full_text_links. 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_full_text_links is provided by the Mcp Pubmed MCP server (petrefiedthunder/mcp-pubmed). 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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