vastai-install-auth

# Vast.ai Install & Auth ## Overview Set up the Vast.ai CLI and REST API access for renting GPU compute instances. Vast.ai is a marketplace where individual hosts and data centers list GPU machines at prices significantly below hyperscaler providers. ## Prerequisites - Python 3.8+ - Vast.ai account at https://cloud.vast.ai - Credit card or credits loaded for GPU rental ## Instructions ### Step 1: Install the CLI ```bash set -euo pipefail pip install vastai vastai --version ``` ### Step 2: Get Your API Key 1. Log in at https://cloud.vast.ai 2. Navigate to **Account** > **API Keys** (or visit https://cloud.vast.ai/cli/) 3. Copy your API key (a long hexadecimal string) ### Step 3: Configure Authentication ```bash # Save API key to ~/.vast_api_key vastai set api-key YOUR_API_KEY_HERE # Verify authentication vastai show user ``` For programmatic use, set the environment variable: ```bash export VASTAI_API_KEY="your-api-key-here" echo 'VASTAI_API_KEY=your-api-key' >> .env ``` ### Step 4: Verify with REST API ```bash # Direct REST API call — base URL is cloud.vast.ai/api/v0 curl -s -H "Authorization: Bearer $VASTAI_API_KEY" \ "https://cloud.vast.ai/api/v0/users/current" | jq '{id, username, balance}' ``` ### Step 5: Python Client Setup ```python # vastai_client.py import os import requests from typing import Optional, Dict, Any, List class VastClient: BASE_URL = "https://cloud.vast.ai/api/v0" def __init__(self, api_key: Optional[str] = None): self.api_k...