Generate AI images or video from a text prompt with Midjourney-style --flags (--ar 16:9, --v, --flagship, ...). Async: returns a generation record; poll GET /api/gens/{uuid}/ or set callback_url for a webhook. Pay-to-play: without credits you get a 402 priced for this prompt; settle the exact USDC on Base via x402 and retry. No account needed: first settlement creates the account; subsequent requests use wallet-signed headers (see 402 wallet_auth). Paying accepts https://maginary.ai/terms.