curl --request POST \
  --url https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "filter": "*.name startsWith Jo,kind anyOf [\"user\",\"organization\"]",
  "sort": "-ts",
  "limit": 10,
  "continuationToken": "QAGFKH1313KUGI2351"
}
'

import requests

url = "https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search"

payload = {
    "filter": "*.name startsWith Jo,kind anyOf [\"user\",\"organization\"]",
    "sort": "-ts",
    "limit": 10,
    "continuationToken": "QAGFKH1313KUGI2351"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    filter: '*.name startsWith Jo,kind anyOf ["user","organization"]',
    sort: '-ts',
    limit: 10,
    continuationToken: 'QAGFKH1313KUGI2351'
  })
};

fetch('https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search', 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://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search",
  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([
    'filter' => '*.name startsWith Jo,kind anyOf ["user","organization"]',
    'sort' => '-ts',
    'limit' => 10,
    'continuationToken' => 'QAGFKH1313KUGI2351'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search"

	payload := strings.NewReader("{\n  \"filter\": \"*.name startsWith Jo,kind anyOf [\\\"user\\\",\\\"organization\\\"]\",\n  \"sort\": \"-ts\",\n  \"limit\": 10,\n  \"continuationToken\": \"QAGFKH1313KUGI2351\"\n}")

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

	req.Header.Add("Authorization", "<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://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"filter\": \"*.name startsWith Jo,kind anyOf [\\\"user\\\",\\\"organization\\\"]\",\n  \"sort\": \"-ts\",\n  \"limit\": 10,\n  \"continuationToken\": \"QAGFKH1313KUGI2351\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.launchdarkly.com/api/v2/projects/{projectKey}/environments/{environmentKey}/contexts/search")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"filter\": \"*.name startsWith Jo,kind anyOf [\\\"user\\\",\\\"organization\\\"]\",\n  \"sort\": \"-ts\",\n  \"limit\": 10,\n  \"continuationToken\": \"QAGFKH1313KUGI2351\"\n}"

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

{
  "_environmentId": "57be1db38b75bf0772d11384",
  "items": [
    {
      "context": "{\"kind\": \"user\", \"key\": \"context-key-123abc\", \"name\": \"Sandy Smith\", \"email\": \"sandy@example.com\"}",
      "lastSeen": "2022-04-15T15:00:57.526470334Z",
      "applicationId": "GoSDK/1.2",
      "_links": {
        "parent": {
          "href": "/api/v2/projects/my-project/environments/my-environment",
          "type": "application/json"
        },
        "self": {
          "href": "/api/v2/projects/my-project/environments/my-env/contexts/organization:launch-darkly:user:henry?filter=applicationid+equals+%22GoSDK%2F1.2%22",
          "type": "application/json"
        },
        "site": {
          "href": "/my-project/my-environment/context/organization:launch-darkly:user:henry",
          "type": "text/html"
        }
      },
      "_access": {
        "denied": [
          {
            "action": "<string>",
            "reason": {
              "effect": "allow",
              "resources": [
                "proj/*:env/*;qa_*:/flag/*"
              ],
              "notResources": [
                "<string>"
              ],
              "actions": [
                "*"
              ],
              "notActions": [
                "<string>"
              ],
              "role_name": "<string>"
            }
          }
        ],
        "allowed": [
          {
            "action": "<string>",
            "reason": {
              "effect": "allow",
              "resources": [
                "proj/*:env/*;qa_*:/flag/*"
              ],
              "notResources": [
                "<string>"
              ],
              "actions": [
                "*"
              ],
              "notActions": [
                "<string>"
              ],
              "role_name": "<string>"
            }
          }
        ]
      },
      "associatedContexts": 1
    }
  ],
  "_links": {
    "next": {
      "href": "/app.launchdarkly.com/api/v2/projects/my-project/environments/my-environment/contexts?filter=kind:{\"equals\": [\"organization\"]}&limit=2&continuationToken=QAGFKH1313KUGI2351",
      "type": "application/json"
    },
    "self": {
      "href": "/api/v2/projects/my-proj/environments/my-env/contexts?filter=kind:{\"equals\": [\"organization\"]}&limit=2&continuationToken=QAGFKH1313KUGI2351",
      "type": "application/json"
    }
  },
  "totalCount": 100,
  "continuationToken": "QAGFKH1313KUGI2351"
}

{
  "code": "invalid_request",
  "message": "Invalid request body"
}

{
  "code": "unauthorized",
  "message": "Invalid access token"
}

{
  "code": "forbidden",
  "message": "Forbidden. Access to the requested resource was denied."
}

{
  "code": "rate_limited",
  "message": "You've exceeded the API rate limit. Try again later."
}