Low Risk

get_related_articles

Find articles related to a specific PubMed article.

How to control get_related_articles ↓

What get_related_articles does on NCBI Literature Search MCP Server

AI agents call get_related_articles to retrieve information from NCBI Literature Search MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Low Risk

Why get_related_articles needs a policy

This tool performs a lookup/retrieval operation to discover related scientific articles. It does not create, modify, delete, or execute any code. The blast radius of misuse is minimal: an agent could only retrieve information about related research, which is a public, non-sensitive operation. No data is altered, no external actions are triggered, and no financial impact is possible.

From the tool's definition Tool description states 'Find articles related to a specific PubMed article' — a query operation that retrieves data without modification.

Documented attack patterns abuse exactly the kind of access get_related_articles gives an agent:

How to control get_related_articles

PolicyLayer is an MCP gateway — it sits between your AI agents and NCBI Literature Search MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_related_articles:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_related_articles": {}
  }
}

get_related_articles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

  1. Create a free account and register NCBI Literature Search MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
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Related tools and policies

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Questions about get_related_articles

What does the get_related_articles tool do? +

Find articles related to a specific PubMed article. It is categorised as a Read tool in the NCBI Literature Search MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_related_articles? +

Register the NCBI Literature Search MCP Server MCP server in PolicyLayer and add a rule for get_related_articles: 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 NCBI Literature Search MCP Server. Nothing to install.

What risk level is get_related_articles? +

get_related_articles is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_related_articles? +

Yes. Add a rate_limit block to the get_related_articles 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.

How do I block get_related_articles completely? +

Set action: deny in the PolicyLayer policy for get_related_articles. 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.

What MCP server provides get_related_articles? +

get_related_articles is provided by the NCBI Literature Search MCP Server MCP server (vitorpavinato/ncbi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every NCBI Literature Search MCP Server tool call.

Start from NCBI Literature Search MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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12 NCBI Literature Search MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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