Is io.github.AnonymousOnyx22/stem-calc-student-mcp safe to use?

io.github.AnonymousOnyx22/stem-calc-student-mcp has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.

How do I install io.github.AnonymousOnyx22/stem-calc-student-mcp?

io.github.AnonymousOnyx22/stem-calc-student-mcp 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 AI clients work with io.github.AnonymousOnyx22/stem-calc-student-mcp?

io.github.AnonymousOnyx22/stem-calc-student-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.

Is io.github.AnonymousOnyx22/stem-calc-student-mcp actively maintained?

io.github.AnonymousOnyx22/stem-calc-student-mcp is actively maintained - last commit was 12 days ago.

io.github.AnonymousOnyx22/stem-calc-student-mcp

stem-calc-student-mcp

STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline.

139/wk GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 12d ago

Works with most clients

Transport: stdio, http

0 tools

Grade F

MCPpedia last refreshed this data 2d ago

Edit this pageView history

io.github.AnonymousOnyx22/stem-calc-student-mcp is an MCP server that STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline. Its tool list has not been published yet over stdio and http, requires no API key, and scores 62/100 on MCPpedia's security, maintenance and efficiency rubric.

Education

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "stem-calc": {
      "args": [
        "-y",
        "stem-calc-student-mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

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[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-anonymousonyx22-stem-calc-student-mcp)](https://mcppedia.org/s/io-github-anonymousonyx22-stem-calc-student-mcp)

Read me

What io.github.AnonymousOnyx22/stem-calc-student-mcp does

STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline.

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

Loading README…

Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

62/100across 5 weighted dimensions

How we score →

0255075100

−38

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked stem-calc-student-mcp against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience - it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.AnonymousOnyx22/stem-calc-student-mcp safe to use?: io.github.AnonymousOnyx22/stem-calc-student-mcp has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install io.github.AnonymousOnyx22/stem-calc-student-mcp?: io.github.AnonymousOnyx22/stem-calc-student-mcp 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 AI clients work with io.github.AnonymousOnyx22/stem-calc-student-mcp?: io.github.AnonymousOnyx22/stem-calc-student-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is io.github.AnonymousOnyx22/stem-calc-student-mcp actively maintained?: io.github.AnonymousOnyx22/stem-calc-student-mcp is actively maintained - last commit was 12 days ago.

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Education

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "stem-calc": {
      "args": [
        "-y",
        "stem-calc-student-mcp"
      ],
      "command": "npx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-anonymousonyx22-stem-calc-student-mcp)](https://mcppedia.org/s/io-github-anonymousonyx22-stem-calc-student-mcp)

Read me

What io.github.AnonymousOnyx22/stem-calc-student-mcp does

STEM calculator MCP for homework: molar mass, balancing, units, significant figures. Works offline.

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

README

STEM Calc MCP

When an AI guesses chemistry and physics homework, the numbers are often wrong. STEM Calc MCP fixes that: it is a free, open source MCP server that does the arithmetic with tested code, so you get the same answer every time. It works out molar mass, balances chemical equations, converts between grams, moles and particles, converts units, rounds to the right number of significant figures finds empirical formulas and gives the percent composition of a formula.

Install with one line:

npx -y stem-calc-student-mcp

Try these prompts:

"What is the molar mass of copper sulfate pentahydrate, CuSO4.5H2O?"
"Balance this equation: C3H8 + O2 -> CO2 + H2O"
"How many moles are in 36 grams of water?"

Use it with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and any other app that runs a local MCP server. It runs on your computer and needs no internet, no account and no API key.

Claude Desktop

Add this to claude_desktop_config.json, then restart the app:

{
  "mcpServers": {
    "stem-calc": {
      "command": "npx",
      "args": ["-y", "stem-calc-student-mcp"]
    }
  }
}

Claude Code

claude mcp add stem-calc -- npx -y stem-calc-student-mcp

Cursor

Add the same block as for Claude Desktop to .cursor/mcp.json.

VS Code

VS Code uses a servers key, not mcpServers. Add this to .vscode/mcp.json:

{
  "servers": {
    "stem-calc": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "stem-calc-student-mcp"]
    }
  }
}

Tools

All ten tools are read only. They calculate an answer and never change anything on your computer.

Tool	What it does	Inputs	Example prompt
`molar_mass`	Molar mass of a formula in g/mol, with the mass each element adds	`formula`, like `H2O`, `Ca(OH)2` or `CuSO4.5H2O`	"What is the molar mass of Ca(OH)2?"
`balance_equation`	Balances a chemical equation	`equation`, like `H2 + O2 -> H2O`	"Balance C3H8 + O2 -> CO2 + H2O."
`stoichiometry`	Converts between grams, moles and particles	`value`, `from`, `to` (`grams`, `moles` or `particles`) and `formula`, which grams need	"How many moles are in 36 grams of water?"
`convert_units`	Converts a value from one unit to another	`value`, `from`, `to`	"Convert 2.5 km to feet."
`round_sig_figs`	Rounds a number to a number of significant figures	`value`, `sigFigs`	"Round 123456 to 3 significant figures."
`empirical_formula`	Finds the simplest whole number formula from mass composition	`composition` and optional `unit` (`percent` or `mass`)	"What is the empirical formula of a compound that is 40 percent carbon, 6.7 percent hydrogen and 53.3 percent oxygen?"
`percent_composition`	Finds the percent by mass of each element in a formula	`formula`	"What is the percent composition of Ca(OH)2?"
`solution_math`	Solves molarity (M = mol/L) or a dilution (M1V1 = M2V2) for the one value you leave out	`mode` (`molarity` or `dilution`), then `moles`, `liters`, `molarity` for molarity, or `initialMolarity`, `initialLiters`, `finalMolarity`, `finalLiters` for a dilution. Volumes are in liters	"What is the molarity of 0.5 mol of NaCl in 2 L of solution?"
`limiting_reagent`	Balances a reaction, then finds the limiting reagent, the theoretical yield of a product and the grams left over of each excess reactant	`equation`, `reactants` (a list of `formula` and `grams`), optional `product`	"How much NH3 can I make from 28 g of N2 and 3 g of H2, and which one runs out?"
`ideal_gas_law`	Solves PV = nRT for the o

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

62/100across 5 weighted dimensions

How we score →

0255075100

−38

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked stem-calc-student-mcp against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience - it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.AnonymousOnyx22/stem-calc-student-mcp safe to use?: io.github.AnonymousOnyx22/stem-calc-student-mcp has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install io.github.AnonymousOnyx22/stem-calc-student-mcp?: io.github.AnonymousOnyx22/stem-calc-student-mcp 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 AI clients work with io.github.AnonymousOnyx22/stem-calc-student-mcp?: io.github.AnonymousOnyx22/stem-calc-student-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and http transport.
Is io.github.AnonymousOnyx22/stem-calc-student-mcp actively maintained?: io.github.AnonymousOnyx22/stem-calc-student-mcp is actively maintained - last commit was 12 days ago.