prompt2bin

Turn English into executables. No code. Just the binary.

$ p2b "a CLI that converts CSV to JSON with column filtering"

  prompt2bin
  "The AI will just create the binary directly."

  Prompt : a CLI that converts CSV to JSON with column filtering
  Output : ./csv2json
  Target : native/native

  ■ Generating... done (24.6s, 4981 chars)
  ■ Compiling... done (0.5s)
  ■ Smoke testing... PASS
  ■ Testing... PASS (10.1s)

  BUILD COMPLETE

  Binary : ./csv2json
  Size   : 2.0MB
  SHA256 : bdf53d481398

  Run:  ./csv2json -h

$ echo "name,age,city\nalice,30,NYC" | ./csv2json -columns name,city
{"city":"NYC","name":"alice"}

What it does

You describe a tool in plain English. prompt2bin generates a self-contained compiled binary. No source code. No dependencies. No runtime. Just a binary that works.

• Generates Go binaries (static, zero dependencies, 2-5MB)
• Auto-fixes compilation errors (up to 5 attempts)
• Smoke tests every binary before delivery
• Cross-compiles for linux/mac/windows
• Caches binaries by prompt hash (instant on repeat)

Requirements

• Go (1.13+) — for compiling generated code
• One of:
  • ANTHROPIC_API_KEY env var (preferred, uses API directly)
  • claude CLI installed (fallback)

Install

pip install promptcompile

Or from source:

git clone https://github.com/ShipItAndPray/prompt2bin.git
cd prompt2bin
pip install .

Usage

Generate a binary

# Basic usage
p2b "a tool that finds duplicate files by content hash"

# Name the output
p2b "an HTTP static file server" --name serve

# Cross-compile
p2b "a JSON pretty-printer" --name jpp --os linux --arch amd64

# Force regeneration (ignore cache)
p2b "a word counter with JSON output" --force

Manage cache

# List cached binaries
p2b --list

# Clear all cached binaries
p2b --clear-cache

MCP Server

prompt2bin also works as an MCP server, so AI agents can generate binaries on the fly:

{
  "mcpServers": {
    "prompt2bin": {
      "command": "python3",
      "args": ["-m", "prompt2bin.mcp_server"]
    }
  }
}

Tools: generate_binary, list_binaries, run_binary, delete_binary

Examples

Binaries generated during testing:

All generated in 20-90 seconds. All compile. All work.

How it works

1. Your prompt goes to Claude (API or CLI)
2. Claude generates a single-file Go program
3. Go compiles it to a static binary (CGO_ENABLED=0 -ldflags "-s -w")
4. If compilation fails, Claude fixes the errors (up to 5 rounds)
5. Binary is smoke-tested (-h flag, basic I/O)
6. Binary is cached by prompt hash for instant reuse

Why Go?

• Static binaries with zero runtime dependencies
• Cross-compilation built in (GOOS=linux GOARCH=amd64)
• Fast compilation (<1s for most tools)
• Small binaries (2-5MB stripped)
• Rich stdlib (HTTP, JSON, crypto, compression — no third-party imports needed)

License

MIT