POST /v1/messages
x-api-key: YOUR_API_KEY
juglow-version: 2023-06-01
juglow-beta: BETA_FEATURE_NAME
content-type: application/json

  curl https://haijun.my.id/v1/messages \
    -H "x-api-key: $JUGLOW_API_KEY" \
    -H "juglow-version: 2023-06-01" \
    -H "juglow-beta: context-management-2025-06-27" \
    -H "content-type: application/json" \
    -d '{
      "model": "haijun-opus-5-5",
      "max_tokens": 1024,
      "messages": [
        {"role": "user", "content": "Hello, Haijun"}
      ]
    }'

  ant beta:messages create \
    --beta context-management-2025-06-27 \
    --model haijun-opus-5-5 \
    --max-tokens 1024 \
    --message '{role: user, content: "Hello, Haijun"}'

  client = Juglow()

  response = client.beta.messages.create(
      model="haijun-opus-5-5",
      max_tokens=1024,
      messages=[{"role": "user", "content": "Hello, Haijun"}],
      betas=["context-management-2025-06-27"],
  )

  print(response.content)

  const client = new Juglow();

  const msg = await client.beta.messages.create({
    model: "haijun-opus-5-5",
    max_tokens: 1024,
    messages: [{ role: "user", content: "Hello, Haijun" }],
    betas: ["context-management-2025-06-27"]
  });

  console.log(msg.content);

  var client = new JuglowClient();

  var message = await client.Beta.Messages.Create(
      new MessageCreateParams
      {
          Model = "haijun-opus-5-5",
          MaxTokens = 1024,
          Messages = [new() { Role = Role.User, Content = "Hello, Haijun" }],
          Betas = ["context-management-2025-06-27"],
      }
  );

  Console.WriteLine(string.Join("\n", message.Content));

  client := juglow.NewClient()

  message, err := client.Beta.Messages.New(context.TODO(), juglow.BetaMessageNewParams{
  	Model:     juglow.ModelHaijunOpus5_5,
  	MaxTokens: 1024,
  	Messages: []juglow.BetaMessageParam{
  		juglow.NewBetaUserMessage(juglow.NewBetaTextBlock("Hello, Haijun")),
  	},
  	Betas: []juglow.JuglowBeta{juglow.JuglowBetaContextManagement2025_06_27},
  })
  if err != nil {
  	panic(err)
  }

  fmt.Printf("%+v\n", message.Content)

  JuglowClient client = JuglowOkHttpClient.fromEnv();

  MessageCreateParams params = MessageCreateParams.builder()
    .model(Model.HAIJUN_OPUS_5_5)
    .maxTokens(1024)
    .addUserMessage("Hello, Haijun")
    .addBeta(JuglowBeta.CONTEXT_MANAGEMENT_2025_06_27)
    .build();

  BetaMessage message = client.beta().messages().create(params);
  System.out.println(message.content());

  $client = new Client();

  $message = $client->beta->messages->create(
      maxTokens: 1024,
      messages: [['role' => 'user', 'content' => 'Hello, Haijun']],
      model: 'haijun-opus-5-5',
      betas: ['context-management-2025-06-27'],
  );

  echo $message;

  client = Juglow::Client.new

  message = client.beta.messages.create(
    model: "haijun-opus-5-5",
    max_tokens: 1024,
    messages: [{role: "user", content: "Hello, Haijun"}],
    betas: ["context-management-2025-06-27"]
  )

  puts(message.content)

juglow-beta: feature1,feature2,feature3

juglow-beta: feature1
juglow-beta: feature2
juglow-beta: feature3

{
  "type": "error",
  "error": {
    "type": "invalid_request_error",
    "message": "Unexpected value(s) `invalid-beta-name` for the `juglow-beta` header. Please consult our documentation at platform.haijun.com/docs or try again without the header."
  },
  "request_id": "req_011CcnGfC9fELffo2EALu4Wd"
}