AI agents call convert_icd_mesh 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 name implies converting between two medical coding systems (ICD diagnosis codes and MeSH terms), which is a read/lookup operation with no side effects. However, the empty description lowers confidence. Given the server context (research assistant for literature search), this is likely a read operation to help map clinical codes to search terms.
From the tool's definition Tool name 'convert_icd_mesh' suggests conversion between ICD codes and MeSH terms, which is a data lookup/translation operation. Description is empty.
Documented attack patterns abuse exactly the kind of access convert_icd_mesh 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 convert_icd_mesh:
{
"version": "1",
"default": "deny",
"tools": {
"convert_icd_mesh": {}
}
}convert_icd_mesh is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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convert_icd_mesh. 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 convert_icd_mesh: 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.
convert_icd_mesh 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 convert_icd_mesh 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 convert_icd_mesh. 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.
convert_icd_mesh 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.