chem.compound

Look up a chemical compound by cid, name, smiles, or inchikey. Returns canonical structural identifiers + physical properties from NIH PubChem.

SERVERMcp SOURCE@2sio/mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-2s-io-mcp/chem.compound.md

WHAT IT DOES

What chem.compound does on Mcp

AI agents call chem.compound to retrieve information from Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why chem.compound is rated Low

This tool queries a chemical database (NIH PubChem) and returns reference data about compounds. It performs a lookup operation with no side effects—no data is created, modified, deleted, or executed. The pay-per-call settlement mechanism does not change the tool's function. This is a straightforward Read operation.

From the tool's definition 'Look up a chemical compound' and 'Returns canonical structural identifiers + physical properties' indicate retrieval of existing data with no modification, deletion, or execution of external operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs chem.compound safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For chem.compound, this is the rule to start with:

chem.compound Allowed

chem.compound is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "chem.compound": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp, apply this rule, and every chem.compound call is checked against it from then on.

FAQ

Questions about chem.compound

What does the chem.compound tool do? +

Look up a chemical compound by cid, name, smiles, or inchikey. Returns canonical structural identifiers + physical properties from NIH PubChem. It is categorised as a Read tool in the Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on chem.compound? +

Register the MCP server in PolicyLayer and add a rule for chem.compound: 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 Mcp. Nothing to install.

What risk level is chem.compound? +

chem.compound is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit chem.compound? +

Yes. Add a rate_limit block to the chem.compound 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.

How do I block chem.compound completely? +

Set action: deny in the PolicyLayer policy for chem.compound. 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.

What MCP server provides chem.compound? +

chem.compound is provided by the MCP server (@2sio/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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