AI agents call get_tissue 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 fetches tissue objects from a biomedical database. The verb 'Retrieve' and the passive nature of listing/getting data without altering state or triggering external actions clearly places it in the Read category. Biomedical reference data retrieval poses minimal risk even if misused by an agent, as it cannot modify records, execute operations, or cause financial impact.
From the tool's definition Tool name 'get_tissue' and description 'Retrieve tissue object list' indicate a data retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_tissue 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_tissue:
{
"version": "1",
"default": "deny",
"tools": {
"get_tissue": {}
}
}get_tissue is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieve tissue object list. 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_tissue: 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_tissue 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_tissue 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_tissue. 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_tissue 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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