> ## Documentation Index
> Fetch the complete documentation index at: https://docs.b3.fun/llms.txt
> Use this file to discover all available pages before exploring further.

# B3 Data API

Get free access to indexed blockchain data from B3 & our appchains with our free API.

- Available to builders for free.
- Intelligent multi-chain routing.
- Cached at the edge for speed.


Browse the REST API reference.

## Data Sources & Intelligence

**Blockscout Integration**

Direct access to indexed blockchain data from Blockscout explorers across all B3 chains, providing transaction history, contract interactions, and block data.
  **Thirdweb Data Layer**

Enhanced with Thirdweb's powerful data infrastructure for NFT metadata, contract ABIs, and smart contract analytics.
  **Intelligent Routing**

Our API automatically routes requests to the optimal data source and chain, ensuring fast response times and data accuracy.
  **Unified Ecosystem View**

Merged data from all B3 ecosystem chains provides a comprehensive view of cross-chain activities and assets.

## Authentication

No authentication required for public endpoints. Simply make requests to start accessing B3 ecosystem data immediately.

 **B3 Data API**