Pubchem for Claude.ai

io.github.pipeworx-io/pubchem

PubChem MCP — NIH chemistry compound database (no auth)

client:Claude.ai transport:streamable-http

Install Pubchem in Claude.ai

Settings → Connectors → Add custom connector

https://gateway.pipeworx.io/pubchem/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

Pubchem in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Pubchem MCP server