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Use PubChem with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Access chemical data. audit compounds, formulas, and CIDs via AI.

Included with plan

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Complete set · 4 capabilities

The complete PubChem capability set.

These are the exact actions your AI can choose when you ask it to work with PubChem.

Capability set01 / 01

01-04

4 capabilities in this set.

Part of 4 available through PubChem.

  1. 01

    Get compound by cid

    Get comprehensive details for a chemical compound by CID

  2. 02

    Search compound cids

    Search for compound CIDs matching a name or keyword

  3. 03

    Check API status

    Check if the PubChem PUG REST service is operational

  4. 04

    Get compound by name

    Get comprehensive details for a chemical compound by name

Observed, not estimated

844ms average. Fast in production.

PubChem is checked daily against the live service.

Daily averagePeak 1052ms
Aug 20Today
Fastest day
675ms
Slowest day
1052ms
14-day trend
Slowing+20%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 4 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of PubChem, so you can see the experience inside your AI.

It does not authenticate your account with PubChem. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

PubChem Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_39PvvjDIh0Gw5sIiVCJqmFBNo6SJy2fu1ixaSd7V/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — PubChem capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "pubchem-pug-rest-api-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_39PvvjDIh0Gw5sIiVCJqmFBNo6SJy2fu1ixaSd7V/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

FAQ

Questions PubChem owners ask.

  • 01

    Is an API Key required for PubChem API?

    No. PubChem is a free and open service provided by the NIH. This server works out of the box without any static credentials required.

  • 02

    What is a CID?

    CID stands for Compound Identifier. It is a unique numerical ID assigned to each chemical compound in the PubChem database.

  • 03

    Can the agent show molecular formulas?

    Yes. The compound details retrieved by your agent include the molecular formula and IUPAC name metadata where available.

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