J.A.R.V.I.S CLI

Just A Rather Very Intelligent System
Created by Nitesh · Powered by Gemini

A premium terminal-based AI assistant with a Monokai-inspired aesthetic, multi-provider support, and a cinematic CLI experience.

Installation

# Install dependencies
npm install

# Build
npm run build

# Run
npm start

# Or run directly with ts-node (dev)
npm run dev

Or with Bun:

bun install
bun run src/index.ts

First Launch

On first launch, JARVIS will walk you through:

1. Provider selection — Choose from Gemini (recommended), OpenAI, Claude, Qwen, Grok, OpenRouter, or a custom OpenAI-compatible API
2. API Key entry — Securely masked input

Config is saved locally and persists across sessions.

Commands

| Command | Description | |---|---| | /help | Show all commands | | /settings | View & change settings | | /provider | Switch AI provider | | /model | Change active model | | /key | Update API key | | /clear | Clear terminal | | /history | Show chat history | | /about | About J.A.R.V.I.S | | /exit | Exit |

Supported Providers

| Provider | Models | |---|---| | Gemini (default) | gemini-2.5-flash, gemini-2.5-pro, gemini-2.0-flash, ... | | OpenAI | gpt-4o, gpt-4o-mini, gpt-4-turbo, ... | | Claude | claude-opus-4, claude-sonnet-4-5, ... | | Qwen | qwen-plus, qwen-max, qwen-turbo, ... | | Grok | grok-3-mini, grok-3, grok-beta | | OpenRouter | openai/gpt-4o, anthropic/claude-3.5-sonnet, ... | | Custom | Any OpenAI-compatible endpoint |

Architecture

src/
├── index.ts              # Entry point
├── providers/
│   ├── types.ts          # Interfaces
│   ├── factory.ts        # Provider factory
│   ├── gemini.ts         # Gemini provider
│   ├── claude.ts         # Claude provider
│   └── openai-compatible.ts  # OpenAI/Qwen/Grok/OpenRouter/Custom
├── commands/
│   ├── onboarding.ts     # First-launch setup
│   ├── repl.ts           # Main chat REPL
│   └── settings.ts       # Settings commands
├── config/
│   └── store.ts          # Config persistence
└── ui/
    ├── theme.ts           # Monokai color palette
    ├── display.ts         # Logo, boot, prompts
    └── markdown.ts        # Terminal markdown renderer

Visual Style

JARVIS uses a Monokai-inspired palette:

• Background: #1E1F1C
• Cyan: #66D9EF
• Green: #A6E22E
• Orange: #FD971F
• Purple: #AE81FF
• Pink: #F92672
• White: #F8F8F2

Extending with New Providers

Implement the Provider interface from src/providers/types.ts:

export interface Provider {
  name: string;
  chat(messages: Message[], onChunk?: (chunk: string) => void): Promise<string>;
  getDefaultModel(): string;
  getAvailableModels(): string[];
}

Then register it in src/providers/factory.ts.