AI agents call pdb_get_nonpolymer_entity 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 retrieves structural or metadata information about nonpolymer entities (ligands, ions, etc.) from the PDB database. Retrieval operations have no side effects and pose minimal risk as they only query public biomedical data. Classified as Read with low severity due to its informational nature and no capability to modify or delete data.
From the tool's definition Tool name 'pdb_get_nonpolymer_entity' indicates retrieval of nonpolymer entity information from PDB (Protein Data Bank), a public biomedical database.
Documented attack patterns abuse exactly the kind of access pdb_get_nonpolymer_entity 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 pdb_get_nonpolymer_entity:
{
"version": "1",
"default": "deny",
"tools": {
"pdb_get_nonpolymer_entity": {}
}
}pdb_get_nonpolymer_entity is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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pdb_get_nonpolymer_entity. 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 pdb_get_nonpolymer_entity: 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.
pdb_get_nonpolymer_entity 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 pdb_get_nonpolymer_entity 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 pdb_get_nonpolymer_entity. 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.
pdb_get_nonpolymer_entity 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.