curl https://api.settlx.io/api/v1/chains

{
  "data": [
    {
      "name": "ethereum",
      "displayName": "Ethereum",
      "chainType": "evm",
      "nativeCurrency": "ETH",
      "supportedTokens": [
        {
          "symbol": "ETH",
          "name": "Ether",
          "contractAddress": null,
          "decimals": 18,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        },
        {
          "symbol": "USDC",
          "name": "USD Coin",
          "contractAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdc.png"
        }
      ]
    },
    {
      "name": "tron",
      "displayName": "Tron",
      "chainType": "tron",
      "nativeCurrency": "TRX",
      "supportedTokens": [
        {
          "symbol": "TRX",
          "name": "TRON",
          "contractAddress": null,
          "decimals": 6,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
          "decimals": 6,
          "standard": "TRC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        }
      ]
    }
  ]
}

GET

api

chains

curl https://api.settlx.io/api/v1/chains

{
  "data": [
    {
      "name": "ethereum",
      "displayName": "Ethereum",
      "chainType": "evm",
      "nativeCurrency": "ETH",
      "supportedTokens": [
        {
          "symbol": "ETH",
          "name": "Ether",
          "contractAddress": null,
          "decimals": 18,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        },
        {
          "symbol": "USDC",
          "name": "USD Coin",
          "contractAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdc.png"
        }
      ]
    },
    {
      "name": "tron",
      "displayName": "Tron",
      "chainType": "tron",
      "nativeCurrency": "TRX",
      "supportedTokens": [
        {
          "symbol": "TRX",
          "name": "TRON",
          "contractAddress": null,
          "decimals": 6,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
          "decimals": 6,
          "standard": "TRC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        }
      ]
    }
  ]
}

List Chains

Returns all enabled blockchain networks supported by Settlx, along with the tokens available on each chain. This endpoint does not require authentication. Use it to populate chain and token selectors in your checkout UI.

Response

data

array

Show Chain objects

name

string

Chain identifier used in other API calls (e.g. ethereum, bsc, solana, tron, bitcoin)

displayName

string

Human-readable chain name (e.g. Ethereum, BNB Smart Chain)

chainType

string

Chain type. One of: evm, solana, tron, bitcoin

nativeCurrency

string

Native currency symbol (e.g. ETH, BNB, SOL, TRX, BTC)

supportedTokens

array

List of tokens supported on this chain, including the native currency.Each token contains:

symbol — token symbol (e.g. USDT)
name — full token name (e.g. Tether USD)
contractAddress — contract address (null for native currencies)
decimals — token decimals
standard — token standard (NATIVE, ERC20, TRC20, SPL, etc.)
iconUrl — token icon URL (may be null)

curl https://api.settlx.io/api/v1/chains

{
  "data": [
    {
      "name": "ethereum",
      "displayName": "Ethereum",
      "chainType": "evm",
      "nativeCurrency": "ETH",
      "supportedTokens": [
        {
          "symbol": "ETH",
          "name": "Ether",
          "contractAddress": null,
          "decimals": 18,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        },
        {
          "symbol": "USDC",
          "name": "USD Coin",
          "contractAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
          "decimals": 6,
          "standard": "ERC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdc.png"
        }
      ]
    },
    {
      "name": "tron",
      "displayName": "Tron",
      "chainType": "tron",
      "nativeCurrency": "TRX",
      "supportedTokens": [
        {
          "symbol": "TRX",
          "name": "TRON",
          "contractAddress": null,
          "decimals": 6,
          "standard": "NATIVE",
          "iconUrl": null
        },
        {
          "symbol": "USDT",
          "name": "Tether USD",
          "contractAddress": "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t",
          "decimals": 6,
          "standard": "TRC20",
          "iconUrl": "https://cdn.settlx.io/tokens/usdt.png"
        }
      ]
    }
  ]
}

Errors List Tokens

​List Chains

​Response

List Chains

Response