MCP Rpn

MCP server that exposes an RPN calculator

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Not yet automatically verified

We haven't yet run this listing's install command through our automated sandbox check. This isn't a red flag — we're steadily working through the catalog.

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "mcp-rpn": {
      "command": "uvx",
      "args": [
        "mcp-rpn"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

mcp-rpn

MCP server that exposes an RPN calculator

Install

Terminal

pip install mcp-rpn

Usage

bash

mcp-rpn

The server uses stdio transport for MCP protocol communication.

MCP Tools

evaluate

Evaluate an RPN (Reverse Polish Notation) expression.

config.json

{
  "name": "evaluate",
  "arguments": {
    "expression": "3 4 +",
    "show_stack": true
  }
}

Operators:

+ - Add
- - Subtract
- - Multiply
/ - Divide
** - Power
% - Modulo

Commands:

clear - Clear the stack
dup - Duplicate top of stack
swap - Swap top two elements

Examples:

3 4 + returns 7
10 5 2 + * 2 - returns 32
3 2 / returns 1.5

clear

Clear the calculator stack.

config.json

{
  "name": "clear",
  "arguments": {}
}

Development

bash

git clone https://github.com/daedalus/mcp-rpn.git
cd mcp-rpn
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mypy src/

MCP Registry

mcp-name: io.github.daedalus/mcp-rpn

Read the full README →View source on GitHub →

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Frequently Asked Questions about MCP Rpn

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "mcp-rpn": { "command": "npx", "args": ["-y", "mcp-rpn"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

33Quality signal: Emerging · 33/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools14/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to MCP Rpn →Install in Claude Desktop Install in Cursor Install in VS Code

Documentation Overview

mcp-rpn

MCP server that exposes an RPN calculator

Install

Terminal

pip install mcp-rpn

Usage

bash

mcp-rpn

The server uses stdio transport for MCP protocol communication.

MCP Tools

evaluate

Evaluate an RPN (Reverse Polish Notation) expression.

config.json

{
  "name": "evaluate",
  "arguments": {
    "expression": "3 4 +",
    "show_stack": true
  }
}

Operators:

+ - Add
- - Subtract
- - Multiply
/ - Divide
** - Power
% - Modulo

Commands:

clear - Clear the stack
dup - Duplicate top of stack
swap - Swap top two elements

Examples:

3 4 + returns 7
10 5 2 + * 2 - returns 32
3 2 / returns 1.5

clear

Clear the calculator stack.

config.json

{
  "name": "clear",
  "arguments": {}
}

Development

bash

git clone https://github.com/daedalus/mcp-rpn.git
cd mcp-rpn
pip install -e ".[test]"

# run tests
pytest

# format
ruff format src/ tests/

# lint
ruff check src/ tests/

# type check
mypy src/

MCP Registry

mcp-name: io.github.daedalus/mcp-rpn