Is there any API to send Bloomberg chat messages?
You mean to chat on a bloomberg terminal? I don't think it exists. I did see a helpdesk chat on their website once, but nothing that lets you communicate with other terminal users. They charge alot of money and I know guys who use their terminals only for access to the chat and network who use it. All the big shots from the ceo of citi to the chairman of hilton hotels to even Tim Geithner..I don't think its likely bloomberg would open that chat to the outside work or outside their platform.