The creator economy – covering influencers on YouTube, TikTok, Instagram, Twitch, podcasts, and newsletters – has become a central channel for digital advertising and brand building. Global influencer marketing spending was estimated around USD 21.1 billion in 2023 and continues to grow at double‑digit rates annually (Statista, 2024). Yet pricing sponsorships and evaluating brand‑content fit remain opaque and highly fragmented.