blockreq_supportedNetworks

Description

Returns all supported blockchain networks, including each network’s slug, name, chain ID, and endpoint URL template. Useful for discovering available networks before creating endpoints.

Parameters

None

Returns

Field	Type	Description
networks	array	List of supported networks
networks[].slug	string	Network slug for API use (e.g., ethereum)
networks[].name	string	Human-readable name
networks[].chainId	integer	EVM chain ID
networks[].subdomain	string	Subdomain used in endpoint URLs
networks[].httpsEndpoint	string	HTTPS endpoint URL template
networks[].wssEndpoint	string	WSS endpoint URL template

Request Example

{
  "jsonrpc": "2.0",
  "method": "blockreq_supportedNetworks",
  "params": [],
  "id": 1
}

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "networks": [
      {
        "slug": "ethereum",
        "name": "Ethereum Mainnet",
        "chainId": 1,
        "subdomain": "eth-mainnet",
        "httpsEndpoint": "https://eth-mainnet.blockreq.com/v1/rpc/{API_KEY}",
        "wssEndpoint": "wss://eth-mainnet.blockreq.com/v1/rpc/{API_KEY}"
      },
      {
        "slug": "bsc",
        "name": "BNB Smart Chain",
        "chainId": 56,
        "subdomain": "bsc-mainnet",
        "httpsEndpoint": "https://bsc-mainnet.blockreq.com/v1/rpc/{API_KEY}",
        "wssEndpoint": "wss://bsc-mainnet.blockreq.com/v1/rpc/{API_KEY}"
      }
    ]
  }
}

Code Examples

cURL

curl -X POST https://eth-mainnet.blockreq.com/v1/rpc/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"blockreq_supportedNetworks","params":[],"id":1}'

JavaScript

const response = await fetch('https://eth-mainnet.blockreq.com/v1/rpc/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'blockreq_supportedNetworks',
    params: [],
    id: 1,
  }),
});
const data = await response.json();
console.log(data.result.networks);

Try It