curl --request POST \
  --url https://api.footstep.ai/v1/routing/optimize \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "locations": [
    {
      "lat": 51.5322,
      "lon": -0.124
    },
    {
      "lat": 51.5055,
      "lon": -0.0754
    },
    {
      "lat": 51.5178,
      "lon": -0.0823
    },
    {
      "lat": 51.5055,
      "lon": -0.0862
    }
  ]
}
'

import requests

url = "https://api.footstep.ai/v1/routing/optimize"

payload = { "locations": [
        {
            "lat": 51.5322,
            "lon": -0.124
        },
        {
            "lat": 51.5055,
            "lon": -0.0754
        },
        {
            "lat": 51.5178,
            "lon": -0.0823
        },
        {
            "lat": 51.5055,
            "lon": -0.0862
        }
    ] }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    locations: [
      {lat: 51.5322, lon: -0.124},
      {lat: 51.5055, lon: -0.0754},
      {lat: 51.5178, lon: -0.0823},
      {lat: 51.5055, lon: -0.0862}
    ]
  })
};

fetch('https://api.footstep.ai/v1/routing/optimize', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.footstep.ai/v1/routing/optimize",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'locations' => [
        [
                'lat' => 51.5322,
                'lon' => -0.124
        ],
        [
                'lat' => 51.5055,
                'lon' => -0.0754
        ],
        [
                'lat' => 51.5178,
                'lon' => -0.0823
        ],
        [
                'lat' => 51.5055,
                'lon' => -0.0862
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.footstep.ai/v1/routing/optimize"

	payload := strings.NewReader("{\n  \"locations\": [\n    {\n      \"lat\": 51.5322,\n      \"lon\": -0.124\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0754\n    },\n    {\n      \"lat\": 51.5178,\n      \"lon\": -0.0823\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0862\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("x-api-key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.footstep.ai/v1/routing/optimize")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"locations\": [\n    {\n      \"lat\": 51.5322,\n      \"lon\": -0.124\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0754\n    },\n    {\n      \"lat\": 51.5178,\n      \"lon\": -0.0823\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0862\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.footstep.ai/v1/routing/optimize")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"locations\": [\n    {\n      \"lat\": 51.5322,\n      \"lon\": -0.124\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0754\n    },\n    {\n      \"lat\": 51.5178,\n      \"lon\": -0.0823\n    },\n    {\n      \"lat\": 51.5055,\n      \"lon\": -0.0862\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "route": {
    "waypoints": [
      {
        "lat": 123,
        "lon": 123,
        "original_index": 123
      }
    ],
    "legs": [
      {
        "distance_meters": 123,
        "duration_seconds": 123,
        "shape": "<string>",
        "steps": [
          {
            "type": "none",
            "instruction": "<string>",
            "street_names": [
              "<string>"
            ],
            "distance_meters": 123,
            "duration_seconds": 123,
            "begin_shape_index": 123,
            "end_shape_index": 123,
            "travel_mode": "<string>",
            "flags": {
              "toll": true,
              "ferry": true,
              "rough": true,
              "gate": true,
              "highway": true
            },
            "verbal_alert": "<string>",
            "verbal_instruction": "<string>",
            "bearing_before": 123,
            "bearing_after": 123,
            "roundabout_exit_count": 123,
            "exit_sign": {
              "exit_number": "<string>",
              "exit_branch": "<string>",
              "exit_toward": "<string>",
              "exit_name": "<string>"
            },
            "lanes": [
              {
                "indications": [
                  "<string>"
                ],
                "valid": true,
                "active": true
              }
            ]
          }
        ],
        "terrain": {
          "total_ascent_meters": 123,
          "total_descent_meters": 123,
          "max_elevation_meters": 123,
          "min_elevation_meters": 123,
          "avg_grade_percent": 123,
          "max_grade_percent": 123,
          "elevation_profile": [
            {
              "distance_meters": 123,
              "elevation_meters": 123
            }
          ],
          "difficulty": "flat"
        },
        "flags": {
          "has_toll": true,
          "has_highway": true,
          "has_ferry": true
        },
        "bounds": {
          "min_lat": 123,
          "min_lon": 123,
          "max_lat": 123,
          "max_lon": 123
        }
      }
    ],
    "distance_meters": 123,
    "duration_seconds": 123,
    "flags": {
      "has_toll": true,
      "has_highway": true,
      "has_ferry": true
    },
    "bounds": {
      "min_lat": 123,
      "min_lon": 123,
      "max_lat": 123,
      "max_lon": 123
    },
    "terrain": {
      "total_ascent_meters": 123,
      "total_descent_meters": 123,
      "max_elevation_meters": 123,
      "min_elevation_meters": 123,
      "avg_grade_percent": 123,
      "max_grade_percent": 123,
      "elevation_profile": [
        {
          "distance_meters": 123,
          "elevation_meters": 123
        }
      ],
      "difficulty": "flat"
    },
    "units": "<string>",
    "narrative": "<string>"
  },
  "optimized_order": [
    123
  ],
  "savings": {
    "distance_saved_meters": 123,
    "distance_saved_percent": 123,
    "time_saved_seconds": 123,
    "time_saved_percent": 123
  }
}

{
  "error": "<string>",
  "message": "<string>"
}

{
  "error": "<string>",
  "message": "<string>"
}