TAC — Think. Architect. Code.

AI-native development CLI with full TUI dashboard, multi-provider support, and wave-based parallel agents.

Based on GSD-2 (MIT License, by Lex Christopherson).

Install

npm install -g tac-2

After install, the tac command is available globally. On systems where tac conflicts with GNU coreutils, use tac-cli instead.

First Run

tac                      # Launch interactive TUI — setup wizard runs on first use

The setup wizard will ask for your AI provider and API key.

Usage

tac                      # Interactive TUI
tac new "idea"           # Full pipeline: ASK > DESIGN > SAFE > AUTO > SHIP
tac build "feature"      # Smart build (skips Q&A if request is clear)
tac think "idea"         # Explore only (ASK + DESIGN, no coding)
tac go                   # Resume from checkpoint
tac ship                 # Safety check + PR + review
tac dashboard            # Live progress TUI
tac status               # Current progress
tac config               # Re-run setup wizard

Features

• Multi-provider — Claude, OpenAI, Gemini, Ollama, OpenAI-compatible
• Full TUI dashboard — Live progress, agent status, cost tracking
• Wave-based agents — Parallel execution with TDD enforcement
• 7 built-in tools — Read, Write, Edit, Bash, Glob, Grep, Git
• Pipeline stages — ASK > DESIGN > SAFE > AUTO > SHIP
• Crash recovery — Heartbeat + stuck detection + auto-resume
• Cost tracking — Real token counting per feature
• Extensions — Pluggable extension system

Supported Providers

| Provider | Models | |----------|--------| | Anthropic | Claude Opus, Sonnet, Haiku | | OpenAI | GPT-4o, o1, o3 | | Google | Gemini 2.5 Pro, Flash | | Ollama | Any local model | | OpenAI-compatible | Any compatible API |

Requirements

• Node.js >= 22
• An AI provider API key

License

MIT — Based on GSD-2 by Lex Christopherson