---

name: enact/hello-brainfuck version: 1.0.0 description: A greeting tool written entirely in Brainfuck - the esoteric programming language enact: "2.0"

from: debian:bookworm-slim

build:

• apt-get update && apt-get install -y beef

command: beef /workspace/hello.bf

timeout: 30s

license: MIT

tags:

• brainfuck
• esoteric
• hello
• greeting
• example

inputSchema: type: object properties: {} additionalProperties: false

outputSchema: type: object properties: message: type: string description: A greeting message from Brainfuck

examples:

• input: {} description: Get a greeting from Brainfuck

---

Hello Brainfuck

A greeting tool written entirely in Brainfuck - the famously minimalist esoteric programming language created by Urban Müller in 1993.

About Brainfuck

Brainfuck has only 8 commands:

• > - Move pointer right
• < - Move pointer left
• + - Increment cell
• - - Decrement cell
• . - Output cell as ASCII
• , - Input to cell
• [ - Jump past ] if cell is zero
• ] - Jump back to [ if cell is non-zero

Everything else (including comments) is ignored.

How It Works

The program builds each ASCII character using multiplication loops. For example, to print H (ASCII 72):

Copy>+++++++[-<++++++++++>]<++.[-]

This creates 7 in a cell, multiplies by 10 (using a loop), adds 2, then prints.

Usage

CLI

Copyenact run enact/hello-brainfuck

MCP (for LLMs/Agents)

Call enact__hello-brainfuck with no arguments.

Output

Returns JSON:

Copy{"message":"Hello from Brainfuck!"}

Why?

Because we can. And because every tool registry deserves at least one Brainfuck program.