AI agents call get_pathway_genes to retrieve information from Oh My KEGG MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries biological pathway data from the KEGG database. It has no side effects, does not execute code or commands, does not modify or delete data, and does not involve financial transactions. The blast radius of misuse is minimal — returning incorrect or sensitive gene pathway information carries low risk compared to other categories. This is a straightforward Read operation.
From the tool's definition Tool name is 'get_pathway_genes' and description states it 'Get all genes involved in a specific pathway' — a pure data retrieval operation with no modification, deletion, or execution of external operations.
Documented attack patterns abuse exactly the kind of access get_pathway_genes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Oh My KEGG MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_pathway_genes:
{
"version": "1",
"default": "deny",
"tools": {
"get_pathway_genes": {}
}
}get_pathway_genes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all genes involved in a specific pathway. It is categorised as a Read tool in the Oh My KEGG MCP MCP Server, which means it retrieves data without modifying state.
Register the Oh My KEGG MCP server in PolicyLayer and add a rule for get_pathway_genes: 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 Oh My KEGG MCP. Nothing to install.
get_pathway_genes 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_pathway_genes 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_pathway_genes. 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_pathway_genes is provided by the Oh My KEGG MCP server (martinuslee/oh-my-kegg-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Oh My KEGG MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
33 Oh My KEGG MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.