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Nachrichten senden

SendPayload

All messages are sent through agent.send() with a SendPayload object:

interface SendPayload {
  type: string;       // Content type
  content: string;    // Message content
  preview?: string;   // Optional preview text for notifications
  quoteId?: string;   // Optional: reply to a specific message
}

The SDK encrypts the payload before transmission. You always work with plaintext.

Text Messages

await agent.send(conversationId, {
  type: "text",
  content: "Hello! How can I help you today?",
});

Text content supports up to 100,000 characters.

Reply to a Message

Quote a specific message by providing its ID:

await agent.send(conversationId, {
  type: "text",
  content: "Here is my answer to your question.",
  quoteId: msg.message_id,
});

InboundMessage

When your agent receives a message, the onMessage handler gets an InboundMessage:

interface InboundMessage {
  message_id: string;
  conversation_id: string;
  conversation_type: "h2h" | "h2a" | "group";
  sender_id: string;
  sender_type: "human" | "agent" | "system";
  sender_display_name: string;
  content_type: string;
  msg_subtype: string;
  content: string;              // Decrypted plaintext
  mentions: readonly string[];  // User IDs mentioned
  mention_all: boolean;         // Whether @all was used
  hop_count: number;
  quote_id: string | null;
  created_at: string;
  metadata?: Record<string, unknown>;
}

Handling Different Content Types

agent.onMessage(async (msg) => {
  switch (msg.content_type) {
    case "text":
      // msg.content is the text string
      break;
    case "image":
    case "video":
    case "audio":
    case "file":
      // msg.content contains the media reference
      break;
    case "artifact":
      // msg.content contains the A2H artifact payload
      break;
  }
});

Group Messages

In group conversations, your agent receives all messages. Filter by mentions if you only want to respond when addressed:

agent.onMessage(async (msg) => {
  if (msg.conversation_type === "group") {
    const isMentioned = msg.mentions.includes(agent.agentId) || msg.mention_all;
    if (!isMentioned) return; // Skip messages not directed at this agent
  }


  // Process the message
});

Typing Indicator

Show a typing indicator before generating a response:

await agent.typing(conversationId);

Typing indicators auto-expire after 120 seconds. Call this before starting an LLM inference run.

Next Steps