Chat

Overview

The chat feature provides real-time AI conversations using Server-Sent Events (SSE) for streaming responses.

Endpoints

How It Works

1. User sends a message from the chat UI
2. Server validates session and checks credit balance
3. Credits are deducted (10 credits per message)
4. Request is sent to Volcano Engine (Doubao model)
5. Response streams back via SSE to the client
6. Message is saved to chatMessage table

Data Model

Chat Sessions (chatSession)

Each conversation is a session:

• id — Session identifier
• userId — Owner
• model — AI model used
• totalCreditsUsed — Running total of credits spent

Chat Messages (chatMessage)

Individual messages within a session:

• sessionId — Parent session
• role — user or assistant
• content — Message text
• creditsUsed — Credits consumed for this message

Configuration

Model parameters can be adjusted in the API route:

const response = await chat({
  model: 'doubao-1-5-thinking-pro-250415',
  messages: [...],
  temperature: 0.7,
  top_p: 0.9,
  max_tokens: 2048,
});