> ## Documentation Index
> Fetch the complete documentation index at: https://docs.blink15.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blink Developer Docs

> Trade prediction markets on Base. Polymarket-compatible API.

# Welcome to Blink

Blink is a prediction market exchange where you trade binary outcome tokens on crypto price movements. Markets run 24/7 with automatic resolution and settlement on Base, powered by Pyth oracle price feeds.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/guides/quickstart">
    Place your first trade in 5 minutes
  </Card>

  <Card title="Core Concepts" icon="book" href="/guides/concepts">
    Markets, tokens, settlement, and auth
  </Card>

  <Card title="Python SDK" icon="python" href="/sdk/python-quickstart">
    pip install py-blink-client
  </Card>

  <Card title="Market Making" icon="chart-line" href="/guides/market-making">
    Run a market maker with the GLFT model
  </Card>
</CardGroup>

## Why Blink?

* **Polymarket-compatible API** — same HMAC auth, order format, and CLOB architecture
* **24/7 binary markets** — UP/DOWN tokens on crypto assets, powered by Pyth oracles
* **Automatic settlement** — on-chain via Base, no manual claims
* **Zero fees** — no maker or taker fees during testnet
* **Open SDKs** — Python and TypeScript clients, fully open source

## Architecture

```
┌─────────────┐     ┌──────────────┐     ┌────────────┐
│  Your Bot   │────▶│  Blink API   │────▶│  Matching  │
│  (SDK)      │◀────│  (REST + WS) │◀────│  Engine    │
└─────────────┘     └──────────────┘     └────────────┘
                           │                    │
                           ▼                    ▼
                    ┌──────────────┐     ┌────────────┐
                    │  Base Chain  │     │  Pyth      │
                    │  (Settlement)│     │  (Prices)  │
                    └──────────────┘     └────────────┘
```

## Contract Addresses (Base Sepolia Testnet)

| Contract                 | Address                                      |
| ------------------------ | -------------------------------------------- |
| Exchange                 | `0x6Eb5B3a29A5f20a5Cfed228c96037abeFa0deA2d` |
| USDC (Circle FiatToken)  | `0x9f702fa37809C1cb4e023f78F801f180a1DF5C8E` |
| CTF (Conditional Tokens) | `0x5baC724896651ee24465C7CA517722C4F644A09B` |
| Chain ID                 | 84532                                        |

## Get Help

* **API Base URL**: `https://api.blink15.com`
* **Swagger UI**: [api.blink15.com/swagger-ui](https://api.blink15.com/swagger-ui/)
* **GitHub**: [github.com/blink-markets](https://github.com/blink-markets)