Look up a gene by its Ensembl stable ID (e.g., ENSG00000139618)
AI agents call lookup_gene_by_id to retrieve information from Ensembl MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward database lookup to retrieve gene information using a stable identifier. It is a read-only operation with no capability to modify, delete, execute code, or affect financial systems. The blast radius of misuse is minimal—an agent might retrieve unintended gene information but cannot cause harm beyond information disclosure in a public genomics database.
From the tool's definition Tool name 'lookup_gene_by_id' and description 'Look up a gene by its Ensembl stable ID' indicate a query operation that retrieves genomic data without modification or side effects.
Attacks that exploit this kind of access
Look up a gene by its Ensembl stable ID (e.g., ENSG00000139618). It is categorised as a Read tool in the Ensembl MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ensembl MCP Server MCP server in PolicyLayer and add a rule for lookup_gene_by_id: 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 Ensembl MCP Server. Nothing to install.
lookup_gene_by_id 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 lookup_gene_by_id 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 lookup_gene_by_id. 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.
lookup_gene_by_id is provided by the Ensembl MCP Server MCP server (munch-group/ensembl-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
Teams ship this data inside their own products. See what a licence covers →