ChemCP is an MCP server that MCP App that renders 2D molecular structures from SMILES using RDKit.js. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 82/100 on MCPpedia's security, maintenance and efficiency rubric.
Step 1
Install in your client
Config is the same across clients — only the file and path differ.
CD
Supported in Claude Desktopstdio, sse, http · Node 18+
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"chemcp": {
"args": [
"chemcp"
],
"command": "npx"
}
}
}Are you the author?
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[](https://mcppedia.org/s/io-github-scottmreed-chemcp)
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What ChemCP does
An MCP App that renders interactive 2D molecular structure diagrams from SMILES notation using RDKit.js. Ask your AI assistant to show you any molecule, and ChemCP displays the structure with computed properties — right inside the chat.
Test This Server
Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.
npx -y 'cloudflared' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Scored, not listed
Why this score
Five weighted categories — click any category to see the underlying evidence.
Score breakdown
82/100across 5 weighted dimensions
0255075100
30
20
15
10
−18
Security
Maintenance
Efficiency
Documentation
Compatibility
Categoriesclick a row to see evidence
Security
OSV.devNo known CVEs.
Checked cloudflared against OSV.dev.
Inventory
Tools (1)
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~118 tokens total
Inventory
Resources (1)
mcp-appInteractive HTML UI that loads RDKit.js from CDN, renders 2D SVG molecular structure diagrams from SMILES, and computes molecular descriptors
mcp://chemcp/mcp-app
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Frequently Asked Questions
- Is ChemCP safe to use?
- ChemCP has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
- How do I install ChemCP?
- ChemCP supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
- What can ChemCP do?
- ChemCP provides 1 tool: render_molecule. See the full tools list on the server page for descriptions and parameters.
- What AI clients work with ChemCP?
- ChemCP is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
- Is ChemCP actively maintained?
- ChemCP is less actively maintained — last commit was 196 days ago. It has 1 GitHub stars.
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