Search PubChem for compounds matching a SMILES string.
AI agents call search_pubchem_by_smiles 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 is a read-only operation that queries a public chemistry database (PubChem) using a molecular identifier (SMILES notation). It retrieves matching compound information with no side effects, no data modification, and no execution of arbitrary code. The blast radius of misuse is minimal—an agent could retrieve irrelevant chemical compound data, but this poses no security, financial, or system integrity risk.
From the tool's definition Tool name 'search_pubchem_by_smiles' and description 'Search PubChem for compounds matching a SMILES string' indicate a query operation that retrieves data from PubChem without modifying, executing, or deleting anything.
Documented attack patterns abuse exactly the kind of access search_pubchem_by_smiles 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 search_pubchem_by_smiles:
{
"version": "1",
"default": "deny",
"tools": {
"search_pubchem_by_smiles": {}
}
}search_pubchem_by_smiles is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search PubChem for compounds matching a SMILES string. 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 search_pubchem_by_smiles: 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.
search_pubchem_by_smiles 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 search_pubchem_by_smiles 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 search_pubchem_by_smiles. 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.
search_pubchem_by_smiles 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.
Free to start. No card required.
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