AI agents call list_tcga_cancer_types 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 performs no side effects—it merely enumerates supported cancer types without modifying, deleting, or executing any operations. The action is purely informational and read-only, making it a Read category risk with low severity. The confidence is high because the name and description are explicit about a listing/querying function.
From the tool's definition Tool name 'list_tcga_cancer_types' and description 'List all supported TCGA cancer types' indicate a simple data retrieval operation that returns a static or pre-computed list of cancer type identifiers from The Cancer Genome Atlas (TCGA) database.
Documented attack patterns abuse exactly the kind of access list_tcga_cancer_types 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 list_tcga_cancer_types:
{
"version": "1",
"default": "deny",
"tools": {
"list_tcga_cancer_types": {}
}
}list_tcga_cancer_types is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all supported TCGA cancer types. 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 list_tcga_cancer_types: 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.
list_tcga_cancer_types 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 list_tcga_cancer_types 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 list_tcga_cancer_types. 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.
list_tcga_cancer_types 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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439 OrigeneMCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.