jurimaxam-dotcom/chemdraw-mcp

chemdraw-mcp

<!-- mcp-name: io.github.jurimaxam-dotcom/chemdraw-mcp -->

Chat → chemical structure. An MCP server for Claude Desktop that turns molecule names or SMILES into publication-style 2D structure drawings — "draw aspirin" produces a print-ready PNG/SVG, rendered fully offline with RDKit. No ChemDraw required; ChemDraw CDXML is available as an optional extra format for users who want to keep editing there.

Built for pharmacy/chemistry students who spend too much time clicking hexagons: structures, full reaction schemes, step-by-step mechanisms, substance data sheets and Ph.Eur. assay calculations — straight from the chat, with an interactive preview panel rendered inline.

<p align="center"><img src="https://raw.githubusercontent.com/jurimaxam-dotcom/chemdraw-mcp/main/assets/demo.gif" alt="Live demo: 'Draw Caffein' renders an interactive structure panel in Claude Desktop" width="560"></p>

Example output

"Draw caffeine" — print-ready PNG, generated by generate_molecule:

<p align="center"><img src="https://raw.githubusercontent.com/jurimaxam-dotcom/chemdraw-mcp/main/assets/caffeine.png" alt="Caffeine structure, rendered by generate_molecule" width="420"></p>

"Show the Fischer esterification of ethanol with acetic acid" — generate_reaction renders the scheme with conditions above the arrow, live in the chat panel:

<p align="center"><img src="https://raw.githubusercontent.com/jurimaxam-dotcom/chemdraw-mcp/main/assets/reaction-demo.gif" alt="Reaction scheme with conditions appearing live in the chat panel" width="640"></p>

*"Show the Fischer e