Promto is an AI prompt marketplace built for indie creators — game devs, YouTubers, and solo builders. What makes it different: • Built-in Playground: Test prompts with real AI (GPT-4o, DALL-E 3, Kling AI) before buying • Creator Marketplace: Anyone can upload and sell their own prompts • Multi-AI support: ChatGPT, Claude, Suno, Midjourney, Kling AI, fal.ai • Prompt quality scoring and verified creator badges • Revenue share up to 95% for creators