BCD

Command-line tools › B

Run bash-preexec from ChatGPT or Claude

Preexec and precmd functions for Bash (like Zsh). With BCD, ChatGPT, Claude and other AI apps can install and run bash-preexec on your own computer and read what it prints.

Works on

About bash-preexec

Version
0.7.0
License
MIT
Installs (last 365 days)
16,869 · #619 in Homebrew
Homepage
github.com/rcaloras/bash-preexec
Install
brew install bash-preexec

Try asking

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

Questions

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

Do I need to install bash-preexec first?
No. If Homebrew is installed, the AI can run brew install bash-preexec 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.