Integrate PubChem with Claude, Cursor, Chatbots & AI Agents MCP Server

Search 116M+ chemical compounds with molecular properties, SMILES notation, formulas, and drug-like properties from the world's largest free chemistry database.

GDPR Free for Subscribers

Compatible with every major AI agent and IDE

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

get

Get pubchem compound on PubChem

Get full chemical data for a PubChem compound by CID

Search pubchem on PubChem

Returns molecular formula, weight, SMILES, InChI, XLogP, hydrogen bond donors/acceptors, and complexity. Try: aspirin, caffeine, glucose, penicillin, dopamine. Search PubChem for chemical compounds by name

Search pubchem formula on PubChem

g. C9H8O4, C8H10N4O2, H2O) and find matching compounds. Find compounds by molecular formula

Security & Code Integrity Audit

Every tool in the PubChem MCP Server is continuously audited by the Vinkius Security Engine. We guarantee zero-trust payload isolation, strict data boundaries, and deterministic execution for enterprise-grade AI agents.

A+Score: 98.33

How Vinkius protects your data

Can I audit what my AI agents are doing with this integration?

Yes, Vinkius provides an immutable, HMAC-chained audit log. Every tool execution, payload, and response is tracked in real-time on your dashboard, giving you complete visibility into your agent's actions.

What molecular properties are returned for each compound?

Each compound includes: CID, IUPAC name, molecular formula, molecular weight, canonical SMILES, InChI identifier, XLogP (lipophilicity), hydrogen bond donor count, hydrogen bond acceptor count, and molecular complexity score. These cover Lipinski's Rule of Five for drug-likeness assessment.

How does the AI access my passwords and credentials?

It simply doesn't. On Vinkius, your passwords, API keys, and login details are kept in a secure vault. The AI (like ChatGPT or Claude) merely "asks" Vinkius to perform the task. Vinkius opens the door, does the work, and hands the result back to the AI. Your credentials are never seen, read, or learned by the artificial intelligence.

What happens if the underlying API rate limits my agent?

Our edge infrastructure automatically handles backoffs, queueing, and throttling. If an AI agent sends too many erratic requests, Vinkius manages the rate limits gracefully, ensuring your backend doesn't crash.

Supported Use Cases for PubChem

The PubChem integration provides comprehensive execution endpoints, allowing AI models to orchestrate tasks reliably.

Streamlining chemistry

The PubChem connection gives ChatGPT direct access to chemistry tools. The integration handles the logic required for continuous the unthinkable operations.

AI-Driven molecular data Workflows

The PubChem toolkit provides AI native integration for molecular data. It structures data so Claude Code can accurately process the unthinkable requirements.