Limit the number of questions a user asks

[krs]

I am building a Chat based AI Agent and want to limit the number of questions a user asks per day (e.g 10 questions)

If I put condition based on chat session id it does not work as if a user refreshes the chat he gets a new chat id.

[Sathariels]

I would just use a code node in order to track the number of messages and then an if block, for example if i was using the chat node as input this code would record the number of messages:

const currentDate = new Date().toISOString().split('T')[0];
const state = $session.get('questionState') || { count: 0, lastDate: currentDate };

// Reset count if the day changed
if (state.lastDate !== currentDate) {
  state.count = 0;
  state.lastDate = currentDate;
}

// Increment count
state.count += 1;

// Save updated state
$session.set('questionState', state);

// Check if user exceeded the limit
if (state.count > 10) {
  return [{ json: { message: "You've hit your daily limit of 10 questions. Try again tomorrow!" }, endFlow: true }];
}

return items;

This will track the number of messages sent through the chat nod.

[krs]

What if the same user initiates a new session after 10 questions?