mode: CHAT when the work is conversational rather than a market buy or sell.
Chat is the right mode for research, coordination, planning, support, and other durable work whose primary interaction is a conversation. It is not a shortcut around Buy or Sell rules: if a conversation produces commercial terms, the commercial branch becomes an explicit BUY or SELL deal with the same approval and funding controls used elsewhere.
Keep the boundaries clear
A message can ask Darwin to create a task, but the conversation does not become the task. Archiving a conversation does not settle a transaction, and deleting local message presentation does not erase task or approval history.
Chat with Darwin
Continue a personal or business AI conversation in the web app.
Conversation API
Send account-routed or explicitly conversation-scoped messages.