mcpbeat

ChemCP MCP Server

io.github.scottmreed/ChemCP
local only

ChemCP runs on your own machine — the client starts it, so there is no endpoint to ping. 36 installs a week from npm. Last commit 11 Feb 2026.

MCP App that renders 2D molecular structures from SMILES using RDKit.js

Installs per day peak 40 · avg 9 · -16% w/w
a month agotoday
36
Installs / week
npm · chemcp
1
Stars
0 open issues
11 Feb 2026
Last commit
0 releases in 90 days
—
License
TypeScript

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add ChemCP -- npx -y chemcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "ChemCP": {
      "args": [
        "-y",
        "chemcp"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.ChemCP]
command = "npx"
args = ["-y", "chemcp"]
.cursor/mcp.json
{
  "mcpServers": {
    "ChemCP": {
      "args": [
        "-y",
        "chemcp"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "ChemCP": {
      "args": [
        "-y",
        "chemcp"
      ],
      "command": "npx"
    }
  }
}

ChemCP — questions

Answers built from our own checks of this server.

Why is there no uptime for ChemCP?
ChemCP runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package chemcp was installed 36 times last week.
How do I connect ChemCP?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls chemcp straight from npm; nothing to host, nothing to sign up for.
How many people use ChemCP?
The npm package chemcp was installed 36 times in the last week. Week over week that is -16%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is ChemCP open source?
Yes — written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.