# SEEDx Web3 Data API

### What are the SEEDx Web3 Data APIs? <a href="#what-are-the-web3-data-apis" id="what-are-the-web3-data-apis"></a>

Popular SEEDx Web3 problems are addressed by the SEEDx Web3 Data APIs, a collection of highly scalable APIs. SEEDx provides developers with easy-to-use APIs for searching, retrieving, and interpreting blockchain data by indexing it in a standardised manner.

### SEEDx Web3 Data API Features <a href="#web3-data-api-features" id="web3-data-api-features"></a>

Through its comprehensive index and set of data-centric API endpoints, SEEDx makes all essential components of blockchain data accessible. Whether you require information on blocks, transactions, pairs, tokens, or balances, our SEEDx Web3 Data API has you covered.

* **Pair Data:** Get current data Metadata, ownership information, token transfer data, token pricing, and more may all be paired together.
* **Token Data:** Get instant, hassle-free access to transactional, ownership, and token price data in real time.
* **Transaction Data:** Learn every nuance of a user's activity. Keeping track of a user's on-chain history and transactions has never been easier.
* **Block Data:** Any block's contents may be retrieved. This includes external and internal transactions, as well as events and logs.
* **Event & Log Data:** Specific transaction records and event logs for each wallet and contract.
* **DeFi Data:** Out-of-the-box liquidity reserves and pair data across SEEDx.<br>

### Use Cases <a href="#use-cases" id="use-cases"></a>

Our Web3 Data APIs provide the greatest functionalities for crypto-based financial technology app developers:

* SNS Service
* Portfolio Trackers
* Block Explorers
* SEEDx Market Data
* Token/Pair Info
* etc.

### SNS Supported Chains <a href="#supported-chains" id="supported-chains"></a>

| Name                            | Chain id    | EvmChain                  | Type    |
| ------------------------------- | ----------- | ------------------------- | ------- |
| Ethereum Mainnet                | 1           | `EvmChain.ETHEREUM`       | Mainnet |
| Ethereum Ropsten *(deprecated)* | 3           | `EvmChain.ROPSTEN`        | Testnet |
| Ethereum Rinkeby *(deprecated)* | 4           | `EvmChain.RINKEBY`        | Testnet |
| Ethereum Görli                  | 5           | `EvmChain.GOERLI`         | Testnet |
| Ethereum Kovan *(deprecated)*   | 42          | `EvmChain.KOVAN`          | Testnet |
| Ethereum Sepolia                | 11155111    | `EvmChain.SEPOLIA`        | Testnet |
| Polygon Mainnet                 | 137         | `EvmChain.POLYGON`        | Mainnet |
| Polygon Mumbai                  | 80001       | `EvmChain.MUMBAI`         | Testnet |
| Binance Smart Chain Mainnet     | 56          | `EvmChain.BSC`            | Mainnet |
| Binance Smart Chain Testnet     | 97          | `EvmChain.BSC_TESTNET`    | Testnet |
| Avalanche C-Chain               | 43114       | `EvmChain.AVALANCHE`      | Mainnet |
| Avalanche Fuji Testnet          | 43113       | `EvmChain.FUJI`           | Testnet |
| Fantom                          | 250         | `EvmChain.FANTOM`         | Mainnet |
| Cronos Mainnet                  | 25          | `EvmChain.CRONOS`         | Mainnet |
| Cronos Testnet                  | 338         | `EvmChain.CRONOS_TESTNET` | Testnet |
| Palm                            | 11297108109 | `EvmChain.PALM`           | Mainnet |
| Arbitrum                        | 42161       | `EvmChain.ARBITRUM`       | Mainnet |

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