# MerchSage Sponsorship Index

> A public index of paid brand sponsorships found in YouTube videos: which brands sponsor which creators, in which category. Built by MerchSage from sampled public transcripts; high- and medium-confidence, named-brand mentions only.

## Pages
- [Sponsorship Index](https://sponsors.merchsage.com/): 8939 sponsorships across 6330 brands and 7070 creators.
- [Coverage and method](https://sponsors.merchsage.com/stats): sponsor rate by subscriber band, how the sample was drawn, and the licence.
- [About](https://sponsors.merchsage.com/about): Method, public API, MCP server, and removal requests.

## Note for agents
There are no per-brand or per-creator pages. Individual brands and creators are served by the API and the MCP server below, not as web pages — query those rather than guessing a URL.

## API
- `GET https://api.merchsage.com/api/public/sponsorships/search?q=` — free-text search
- `GET https://api.merchsage.com/api/public/sponsorships/brands/{slug}` — one brand and its creators
- `GET https://api.merchsage.com/api/public/sponsorships/creators/{handle}` — one creator and its sponsors
- `GET https://api.merchsage.com/api/public/sponsorships/export` — the whole index, flat
- `GET https://api.merchsage.com/api/public/sponsorships/openapi.json` — OpenAPI spec for the above
- MCP: `claude mcp add --transport http sponsors https://api.merchsage.com/mcp/sponsors`

## Categories
- [Other](https://sponsors.merchsage.com/category/other): 3164 brands, 3943 mentions.
- [Software & SaaS](https://sponsors.merchsage.com/category/software-saas): 431 brands, 584 mentions.
- [Consumer Electronics](https://sponsors.merchsage.com/category/consumer-electronics): 369 brands, 494 mentions.
- [Finance & Investing](https://sponsors.merchsage.com/category/finance-investing): 292 brands, 412 mentions.
- [E-commerce & Marketplaces](https://sponsors.merchsage.com/category/ecommerce-marketplace): 274 brands, 396 mentions.
- [Home Goods](https://sponsors.merchsage.com/category/home-goods): 285 brands, 363 mentions.
- [Automotive](https://sponsors.merchsage.com/category/automotive): 268 brands, 305 mentions.
- [Fashion & Apparel](https://sponsors.merchsage.com/category/fashion-apparel): 216 brands, 282 mentions.
- [Health & Supplements](https://sponsors.merchsage.com/category/health-supplement): 207 brands, 274 mentions.
- [Beauty & Grooming](https://sponsors.merchsage.com/category/beauty-grooming): 225 brands, 270 mentions.
- [Creator Tools](https://sponsors.merchsage.com/category/creator-tools): 163 brands, 213 mentions.
- [Education & Courses](https://sponsors.merchsage.com/category/education-course): 149 brands, 203 mentions.
- [Travel](https://sponsors.merchsage.com/category/travel): 173 brands, 203 mentions.
- [Media & Entertainment](https://sponsors.merchsage.com/category/media-entertainment): 134 brands, 156 mentions.
- [Video Games](https://sponsors.merchsage.com/category/video-game): 101 brands, 148 mentions.
- [Mobile Games](https://sponsors.merchsage.com/category/mobile-game): 86 brands, 137 mentions.
- [Telecom](https://sponsors.merchsage.com/category/telecom): 83 brands, 134 mentions.
- [VPN & Privacy](https://sponsors.merchsage.com/category/vpn-privacy): 35 brands, 132 mentions.
- [Meal Kits & Food](https://sponsors.merchsage.com/category/meal-kit-food): 71 brands, 122 mentions.
- [Insurance](https://sponsors.merchsage.com/category/insurance): 77 brands, 99 mentions.
- [Fitness](https://sponsors.merchsage.com/category/fitness): 56 brands, 69 mentions.