> ## Documentation Index
> Fetch the complete documentation index at: https://docs.upriver.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> API for real-time context on creators, audiences, brands, trends, and sponsorships

## What is Upriver?

[Upriver](https://upriver.ai/?ref=docs) provides an API that turns what's happening online into real-time, reliable context for AI applications.

## Core Features

Upriver specializes in evidence-backed analysis on norms, influences, and aesthetics that come from online communities.

* <b>Brands</b>: brands and how they're being discussed
* <b>Products</b>: product mentions and use cases
* <b>Creators</b>: relevant creators and profiles
* <b>Audiences</b>: personas, interests, language, and humor
* <b>Trends</b>: topics and formats gaining attention
* <b>Sponsorships</b>: Brand-creator relationships and placements

## Popular Use Cases

Developers blend Upriver's external data with internal data for uses cases like:

<Columns cols={2}>
  <Card title="Content Generation" icon="sparkles">
    Ground AI outputs in what people actually care about
  </Card>

  <Card title="Search and Match" icon="magnifying-glass">
    Power discovery and recommendations using relevance signals
  </Card>

  <Card title="Targeting" icon="crosshairs">
    Identify relevant brands, creators, or audiences
  </Card>

  <Card title="Enrichment" icon="pencil-line">
    Surface our insights directly to end users
  </Card>
</Columns>

## For Agents + LLMs

Building with agents or coding assistants? Give them the skill.md and they can use the API directly.

<CardGroup cols={2}>
  <Card title="skill.md" icon="lobster" href="/ai/skillmd">
    Structured capabilities file for agents
  </Card>

  <Card title="llms.txt" icon="robot" href="/ai/llmstxt">
    Documentation index for LLMs
  </Card>
</CardGroup>

## Get Started

To get an API key, schedule an intro call:

<Card title="Schedule 1:1 Call" icon="video" href="https://cal.com/lulu-zhang/upriver-intro">
  20-minute intro call to discuss your use case and learn how Upriver can help.
</Card>