North Desk Headline Generator

Choose this endpoint when you need a single, concise, testable headline — not long-form copy or multiple variants. It is ideal for A/B testing scenarios where you want one focused headline anchored to a specific product and audience. Prefer it over generic LLM prompts when you want a structured, paid, production-ready copywriting service with consistent output format. Use the sibling one-paragraph ad copy endpoint if you need fuller landing page copy instead.

• Missing 'product' field returns validation error
• Missing 'audience' field returns validation error
• Vague or empty product/audience descriptions may yield generic or low-quality headlines
• Payment failure on Solana mainnet (insufficient USDC balance or network issues) blocks the request
• Rate limiting or server unavailability on the Cloudflare tunnel URL