Chemical / PubChem data for AI agents
Chemical identity, properties, and public GHS hazard classification from NIH/NLM PubChem (keyless, public domain). Where the upstream source provides it, the response includes a timestamp or freshness note.
Get a free key → See all 2 tools
How to connect
These Chemical / PubChem tools use the same LiveDataLink endpoint as the rest of the catalog. Add it to an MCP client that supports Streamable HTTP and include your bearer key. Each source has its own coverage, update schedule, and credential requirements; those limits are listed in the catalog and response notes.
{
"mcpServers": {
"livedatalink": {
"url": "https://livedatalink.ai/mcp",
"headers": { "Authorization": "Bearer YOUR_API_KEY" }
}
}
}Once connected, call any tool below. The free tier covers 1,000 queries each month across the 377-tool catalog, with no credit card.
Chemical / PubChem tools (2)
| chemical_lookup | Resolve a chemical name or CID to its PubChem identity and properties: CID, IUPAC name, molecular formula, molecular weight, and canonical SMILES. |
| chemical_hazards | Return a chemical's public GHS hazard classification: signal word (Danger/Warning) and hazard statements (H-codes). Informational, not a safety data sheet. |
Common queries this domain answers: chemical · chemistry · pubchem · cid · compound · molecule · substance · iupac name · molecular formula · molecular weight · smiles · structure · ghs · hazard · hazards · signal word · hazard statement · h-code.
Why LiveDataLink for Chemical / PubChem
- One key, 81 domains. These tools sit alongside FMCSA carrier safety, sanctions screening, SEC filings, courts, Census, and FRED through the same endpoint. Source coverage and credentials vary by tool.
- Check source terms. Sourced from PubChem (NIH); review its attribution and redistribution rules before shipping results.
- For agent workflows. Read-only annotated MCP tools over Streamable HTTP with Bearer auth. Use them with clients that support this transport, including compatible Claude, Cursor, and n8n setups.
FAQ
- What can I look up in Chemical / PubChem?
- Chemical identity, properties, and public GHS hazard classification from NIH/NLM PubChem (keyless, public domain). The catalog has 2 tools, including chemical_lookup, chemical_hazards. They are available over the Model Context Protocol at https://livedatalink.ai/mcp. Coverage and update timing come from PubChem (NIH).
- How do I connect these tools?
- Add https://livedatalink.ai/mcp as a Streamable HTTP MCP server in Claude, Cursor, n8n, or another compatible client, then send an "Authorization: Bearer YOUR_API_KEY" header. A free key includes 1,000 queries/month with no card at https://livedatalink.ai/signup/free. The same key works across domains, although some upstream sources have their own credentials or limits.
- Can I reuse the results in my product?
- That depends on PubChem (NIH)'s terms. Check its attribution and redistribution rules before shipping results to customers. LiveDataLink's free tier includes 1,000 queries/month, and paid plans start at $10/month.