curl --request GET \
  --url https://api.zerion.io/v1/chains/ \
  --header 'Authorization: Basic <encoded-value>'

import requests

url = "https://api.zerion.io/v1/chains/"

headers = {"Authorization": "Basic <encoded-value>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Basic <encoded-value>'}};

fetch('https://api.zerion.io/v1/chains/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.zerion.io/v1/chains/"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Basic <encoded-value>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "links": {
    "self": "https://api.zerion.io/v1/chains/"
  },
  "data": [
    {
      "type": "chains",
      "id": "polygon",
      "attributes": {
        "name": "polygon",
        "external_id": "0x4e454152",
        "icon": {
          "url": "https://token-icons.s3.amazonaws.com/0x0391d2021f89dc339f60fff84546ea23e337750f.png"
        },
        "explorer": {
          "name": "polygonScan",
          "token_url_format": "https://explorer.mainnet.polygon.dev/token/{ADDRESS}",
          "tx_url_format": "https://explorer.mainnet.polygon.dev/tx/{HASH}",
          "home_url": "https://explorer.mainnet.polygon.dev"
        },
        "rpc": {
          "internal_server_url_format": "https://mainnet.polygon.dev/{polygon_API_KEY}",
          "public_servers_url": [
            "https://mainnet.polygon.dev"
          ]
        },
        "flags": {
          "supports_trading": true,
          "supports_sending": true,
          "supports_bridge": true
        }
      },
      "relationships": {
        "native_fungible": {
          "links": {
            "related": "https://api.zerion.io/v1/fungibles/0x2af1df3ab0ab157e1e2ad8f88a7d04fbea0c7dc6"
          },
          "data": {
            "type": "fungibles",
            "id": "0x2af1df3ab0ab157e1e2ad8f88a7d04fbea0c7dc6"
          }
        },
        "wrapped_native_fungible": {
          "links": {
            "related": "https://api.zerion.io/v1/fungibles/0x2af1df3ab0ab157e1e2ad8f88a7d04fbea0c7dc6"
          },
          "data": {
            "type": "fungibles",
            "id": "0x2af1df3ab0ab157e1e2ad8f88a7d04fbea0c7dc6"
          }
        }
      }
    }
  ]
}

{
  "errors": [
    {
      "title": "Parameter is malformed",
      "detail": "Some validation errors will be described here"
    }
  ]
}

{
  "errors": [
    {
      "title": "Unauthorized Error",
      "detail": "The API key is invalid, please, make sure that you are using a valid key"
    }
  ]
}

{
  "errors": [
    {
      "title": "Too many requests",
      "detail": "Your request had been throttled"
    }
  ]
}