AI agents call get_substance_by_name to retrieve information from OrigeneMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries a biomedical database to retrieve substance information based on a name parameter. It is a read-only operation that retrieves or queries data without any side effects, creation, modification, or deletion of data. The blast radius of misuse is minimal — returning incorrect substance information would not directly cause harm through the tool itself, only through downstream use of the returned data.
From the tool's definition Tool name is 'get_substance_by_name' and description states 'Get substance information by name' — a simple retrieval operation with no modification, deletion, or execution capability.
Documented attack patterns abuse exactly the kind of access get_substance_by_name gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OrigeneMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_substance_by_name:
{
"version": "1",
"default": "deny",
"tools": {
"get_substance_by_name": {}
}
}get_substance_by_name is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get substance information by name. It is categorised as a Read tool in the OrigeneMCP MCP Server, which means it retrieves data without modifying state.
Register the Origene MCP server in PolicyLayer and add a rule for get_substance_by_name: 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 OrigeneMCP. Nothing to install.
get_substance_by_name 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_substance_by_name 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_substance_by_name. 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_substance_by_name is provided by the Origene MCP server (gentel-lab/origenemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from OrigeneMCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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