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

# Introduction

> Structured opinion data and the arguments behind them.

# Thinkbase Data API

Thinkbase captures public opinion on current topics. Every prediction market tells you **what** people think. Thinkbase — the world's first opinion market — tells you **why**.

## What you get

* **Live voting percentages** on 1,600+ debates across 14 categories
* **40,000+ structured arguments** tied to positions with upvote signals
* **Historical snapshots** showing how opinion shifts over time
* **Search** across debate titles and descriptions

## Who uses this

* **Media and newsrooms** embed live opinion data and cite real arguments
* **AI/LLM companies** train on structured reasoning data
* **Political campaigns and pollsters** track opinion with the reasoning behind it
* **Academic researchers** study argumentation and persuasion at scale
* **Content creators** find trending debates for content ideas

## Quick start

<Steps>
  <Step title="Get an API key">
    Sign up at [platform.trythinkbase.com](https://platform.trythinkbase.com) to create your API key instantly.
  </Step>

  <Step title="Make your first request">
    ```bash theme={null}
    curl -H "X-API-Key: YOUR_KEY" \
      https://api.trythinkbase.com/v1/debates?limit=5
    ```
  </Step>

  <Step title="Explore the data">
    Browse [categories](/api-reference/list-categories), check [trending debates](/api-reference/list-trending), or [search](/api-reference/search-debates) for a topic.
  </Step>
</Steps>

## Base URL

All API requests go to:

```
https://api.trythinkbase.com/v1
```

## Response format

Every response returns JSON. List endpoints return paginated results:

```json theme={null}
{
  "data": [...],
  "pagination": {
    "page": 1,
    "limit": 50,
    "total": 1648,
    "has_more": true
  }
}
```

Single-item endpoints and non-paginated lists (categories, trending, history) return the data directly:

```json theme={null}
{
  "data": { ... }
}
```