curl --request POST \
  --url https://api.healos.ai/ext-api/v1/appointments \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "patient_id": "1743552000000",
  "appointment_type": "Initial Evaluation",
  "visit_type": "Telehealth",
  "start_at": "2026-04-15T14:00:00.000Z",
  "duration_minutes": 50,
  "provider_id": "aaaaaaa1-0000-0000-0000-000000000001",
  "notes": "New patient intake. Please complete forms beforehand.",
  "status": "SCHEDULED",
  "external_id": "PARTNER-APPT-789"
}
'

import requests

url = "https://api.healos.ai/ext-api/v1/appointments"

payload = {
    "patient_id": "1743552000000",
    "appointment_type": "Initial Evaluation",
    "visit_type": "Telehealth",
    "start_at": "2026-04-15T14:00:00.000Z",
    "duration_minutes": 50,
    "provider_id": "aaaaaaa1-0000-0000-0000-000000000001",
    "notes": "New patient intake. Please complete forms beforehand.",
    "status": "SCHEDULED",
    "external_id": "PARTNER-APPT-789"
}
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({
    patient_id: '1743552000000',
    appointment_type: 'Initial Evaluation',
    visit_type: 'Telehealth',
    start_at: '2026-04-15T14:00:00.000Z',
    duration_minutes: 50,
    provider_id: 'aaaaaaa1-0000-0000-0000-000000000001',
    notes: 'New patient intake. Please complete forms beforehand.',
    status: 'SCHEDULED',
    external_id: 'PARTNER-APPT-789'
  })
};

fetch('https://api.healos.ai/ext-api/v1/appointments', 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.healos.ai/ext-api/v1/appointments",
  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([
    'patient_id' => '1743552000000',
    'appointment_type' => 'Initial Evaluation',
    'visit_type' => 'Telehealth',
    'start_at' => '2026-04-15T14:00:00.000Z',
    'duration_minutes' => 50,
    'provider_id' => 'aaaaaaa1-0000-0000-0000-000000000001',
    'notes' => 'New patient intake. Please complete forms beforehand.',
    'status' => 'SCHEDULED',
    'external_id' => 'PARTNER-APPT-789'
  ]),
  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.healos.ai/ext-api/v1/appointments"

	payload := strings.NewReader("{\n  \"patient_id\": \"1743552000000\",\n  \"appointment_type\": \"Initial Evaluation\",\n  \"visit_type\": \"Telehealth\",\n  \"start_at\": \"2026-04-15T14:00:00.000Z\",\n  \"duration_minutes\": 50,\n  \"provider_id\": \"aaaaaaa1-0000-0000-0000-000000000001\",\n  \"notes\": \"New patient intake. Please complete forms beforehand.\",\n  \"status\": \"SCHEDULED\",\n  \"external_id\": \"PARTNER-APPT-789\"\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.healos.ai/ext-api/v1/appointments")
  .header("X-API-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"patient_id\": \"1743552000000\",\n  \"appointment_type\": \"Initial Evaluation\",\n  \"visit_type\": \"Telehealth\",\n  \"start_at\": \"2026-04-15T14:00:00.000Z\",\n  \"duration_minutes\": 50,\n  \"provider_id\": \"aaaaaaa1-0000-0000-0000-000000000001\",\n  \"notes\": \"New patient intake. Please complete forms beforehand.\",\n  \"status\": \"SCHEDULED\",\n  \"external_id\": \"PARTNER-APPT-789\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.healos.ai/ext-api/v1/appointments")

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  \"patient_id\": \"1743552000000\",\n  \"appointment_type\": \"Initial Evaluation\",\n  \"visit_type\": \"Telehealth\",\n  \"start_at\": \"2026-04-15T14:00:00.000Z\",\n  \"duration_minutes\": 50,\n  \"provider_id\": \"aaaaaaa1-0000-0000-0000-000000000001\",\n  \"notes\": \"New patient intake. Please complete forms beforehand.\",\n  \"status\": \"SCHEDULED\",\n  \"external_id\": \"PARTNER-APPT-789\"\n}"

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

{
  "data": {
    "id": "f47ac10b-58cc-4372-a567-0e02b2c3d479",
    "patient_id": "1743552000000",
    "patient_name": "Maria Santos",
    "provider_id": "aaaaaaa1-0000-0000-0000-000000000001",
    "provider_name": "Dr. Alice Nguyen",
    "provider_npi": "1234567890",
    "appointment_type": "Initial Evaluation",
    "visit_type": "Telehealth",
    "start_at": "2026-04-15T14:00:00.000Z",
    "duration_minutes": 50,
    "notes": "New patient intake. Please complete forms beforehand.",
    "status": "SCHEDULED",
    "created_at": "2026-04-01T10:00:00.000Z",
    "updated_at": "2026-04-01T10:00:00.000Z",
    "repeat_rule": {
      "frequency": "WEEKLY",
      "interval": 1,
      "end_date": "2026-07-15"
    },
    "external_id": "PARTNER-APPT-789"
  }
}

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

{
  "error": "<string>"
}

{
  "error": "<string>"
}

{
  "error": "<string>"
}

{
  "error": "external_id already in use",
  "existing": {
    "id": "<string>",
    "external_id": "<string>"
  }
}

{
  "error": "Rate limit exceeded. Please retry after the window resets."
}