Fetch one article with full abstract text.
AI agents call fetch_article to retrieve information from Ryogena Pubmed without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data (article abstracts) from a public biomedical literature database without creating, modifying, deleting, or executing anything. The blast radius of misuse is minimal - an agent could retrieve unwanted articles but cannot harm data or systems. This is a straightforward Read operation.
From the tool's definition Tool description states 'Fetch one article with full abstract text' - a retrieval operation with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Fetch one article with full abstract text. It is categorised as a Read tool in the Ryogena Pubmed MCP Server, which means it retrieves data without modifying state.
Register the Ryogena Pubmed MCP server in PolicyLayer and add a rule for fetch_article: 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 Ryogena Pubmed. Nothing to install.
fetch_article 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 fetch_article 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 fetch_article. 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.
fetch_article is provided by the Ryogena Pubmed MCP server (kylevick4/pubmed-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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