I love the direct sponsorship model just because it seems more authentic, which is important for content creators. Is there a platform for that kind of direct

I love the direct sponsorship model just because it seems more authentic, which is important for content creators. Is there a platform for that kind of direct sponsorship? It would be helpful to discover, schedule, manage content, track and handle payments for sponsorships. The platform would be helpful whether the platform serves the ads directly via JS or indirectly via manual or API based content integration.