BCD

Command-line tools › C

Run calc from ChatGPT or Claude

Arbitrary precision calculator. With BCD, ChatGPT, Claude and other AI apps can install and run calc on your own computer and read what it prints.

Works on

About calc

Version
2.17.0.2
License
LGPL-2.1-or-later
Installs (last 365 days)
3,775 · #1,407 in Homebrew
Homepage
www.isthe.com/chongo/tech/comp/calc
Install
brew install calc

Try asking

“Install calc with Homebrew and show me its version”
“Read calc --help and give me three useful examples for my files”
“Update calc and tell me what changed”

Depends on

readline

Questions

Can ChatGPT run calc on my computer?
Yes. With BCD on your Mac or Linux computer and command permission turned on for it, ChatGPT runs calc there and reads the output. Claude and other apps with MCP connectors can too.

Do I need to install calc first?
No. If Homebrew is installed, the AI can run brew install calc for you.

Is it safe?
A new computer starts read-only: running commands is turned on per computer, and BCD reaches only the folders you allow.

Try it on your computer

BCD connects ChatGPT, Claude and other AI apps to your own Mac, Windows or Linux computer. One computer is free, with 20,000 tool calls a month and no card.

Program data from Homebrew, updated 2026-11-11. Installs are Homebrew's installs on request over the last 365 days.