curl --request POST \
  --url https://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "data": {
    "attributes": {
      "vehicleId": "a6a425d6-c661-4b21-af7a-d6b75f80f3b0",
      "userId": "1e258add-fb21-4293-b9ab-cf8a61f7a880",
      "redirectUri": "https://example.com/smartcar/callback"
    }
  }
}
'

import requests

url = "https://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity"

payload = { "data": { "attributes": {
            "vehicleId": "a6a425d6-c661-4b21-af7a-d6b75f80f3b0",
            "userId": "1e258add-fb21-4293-b9ab-cf8a61f7a880",
            "redirectUri": "https://example.com/smartcar/callback"
        } } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    data: {
      attributes: {
        vehicleId: 'a6a425d6-c661-4b21-af7a-d6b75f80f3b0',
        userId: '1e258add-fb21-4293-b9ab-cf8a61f7a880',
        redirectUri: 'https://example.com/smartcar/callback'
      }
    }
  })
};

fetch('https://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity', 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://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity",
  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([
    'data' => [
        'attributes' => [
                'vehicleId' => 'a6a425d6-c661-4b21-af7a-d6b75f80f3b0',
                'userId' => '1e258add-fb21-4293-b9ab-cf8a61f7a880',
                'redirectUri' => 'https://example.com/smartcar/callback'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity"

	payload := strings.NewReader("{\n  \"data\": {\n    \"attributes\": {\n      \"vehicleId\": \"a6a425d6-c661-4b21-af7a-d6b75f80f3b0\",\n      \"userId\": \"1e258add-fb21-4293-b9ab-cf8a61f7a880\",\n      \"redirectUri\": \"https://example.com/smartcar/callback\"\n    }\n  }\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"data\": {\n    \"attributes\": {\n      \"vehicleId\": \"a6a425d6-c661-4b21-af7a-d6b75f80f3b0\",\n      \"userId\": \"1e258add-fb21-4293-b9ab-cf8a61f7a880\",\n      \"redirectUri\": \"https://example.com/smartcar/callback\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://vehicle.api.smartcar.com/v3/interactions/select-battery-capacity")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"data\": {\n    \"attributes\": {\n      \"vehicleId\": \"a6a425d6-c661-4b21-af7a-d6b75f80f3b0\",\n      \"userId\": \"1e258add-fb21-4293-b9ab-cf8a61f7a880\",\n      \"redirectUri\": \"https://example.com/smartcar/callback\"\n    }\n  }\n}"

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

{
  "data": {
    "id": "9f1c2b7e-3a4d-4e5f-8a9b-0c1d2e3f4a5b",
    "type": "interaction",
    "attributes": {
      "interactionType": "select-battery-capacity",
      "url": "https://connect.smartcar.com/battery-capacity?token=REDACTED",
      "expiresAt": "2026-11-07T18:00:00Z"
    },
    "meta": {
      "createdAt": "2026-10-08T18:00:00Z"
    }
  }
}

{
  "errors": [
    {
      "status": "400",
      "type": "VALIDATION",
      "code": "BAD_REQUEST",
      "title": "Bad Request",
      "detail": "The request could not be understood by the server due to malformed syntax.",
      "links": {
        "about": "https://smartcar.com/docs/errors/api-errors/v3/validation-errors"
      }
    }
  ]
}

{
  "errors": [
    {
      "status": "401",
      "type": "AUTHENTICATION",
      "code": "UNAUTHORIZED",
      "title": "Unauthorized",
      "detail": "The Authorization token is missing or invalid.",
      "links": {
        "about": "https://smartcar.com/docs/errors/api-errors/v3/authentication-errors#authentication"
      }
    }
  ]
}

{
  "errors": [
    {
      "status": "403",
      "type": "AUTHENTICATION",
      "code": "FORBIDDEN",
      "title": "Forbidden",
      "detail": "You do not have permission to access this resource.",
      "links": {
        "about": "https://smartcar.com/docs/errors/api-errors/v3/authentication-errors"
      }
    }
  ]
}

{
  "errors": [
    {
      "status": "404",
      "type": "RESOURCE_NOT_FOUND",
      "code": "NOT_FOUND",
      "title": "Not Found",
      "detail": "The requested resource could not be found.",
      "links": {
        "about": "https://smartcar.com/docs/errors/api-errors/v3/resource-not-found-errors"
      }
    }
  ]
}

{
  "errors": [
    {
      "status": "422",
      "type": "VALIDATION",
      "code": "INTERACTION_NOT_APPLICABLE",
      "title": "Interaction Not Applicable",
      "detail": "This vehicle doesn't have more than one battery capacity option, so there's nothing for the owner to choose. Read its capacity from the tractionbattery-nominalcapacity signal."
    }
  ]
}

{
  "errors": [
    {
      "status": "500",
      "type": "SERVER",
      "code": "INTERNAL",
      "title": "Internal Server Error",
      "detail": "An unexpected error occurred on the server.",
      "links": {
        "about": "https://smartcar.com/docs/errors/api-errors/v3/server-errors"
      }
    }
  ]
}