Common IssuesuseChat No Response with maxSteps
useChat
No Response with maxSteps
Issue
I am using useChat
with maxSteps
.
When I log the incoming messages on the server, I can see the tool call and the tool result, but the model does not respond with anything.
Background
The useChat
hook uses a message structure (Message
) that pre-dates the AI SDK Core message structure (CoreMessage
).
Solution
To resolve this issue, convert the incoming messages to the CoreMessage
format using the convertToCoreMessages
function.
import { openai } from '@ai-sdk/openai';import { convertToCoreMessages, streamText } from 'ai';
export async function POST(req: Request) { const { messages } = await req.json();
const result = await streamText({ model: openai('gpt-4o'), messages: convertToCoreMessages(messages), });
return result.toDataStreamResponse();}