teams.microsoft.com
Send Chat Message
Input
message requiredText to send as the chat message.
contactName requiredDisplay name of the person whose 1:1 chat to open, as it appears in Teams (e.g. "Jatin Papneja").
Output
mid requiredMessage id (epoch ms) of the sent message, read back from the chat pane.
sent requiredtext requiredText of the sent message, read back from the chat pane.
contactName requiredGet Chat Messages
Read messages from a 1:1 Teams chat by contact name — no admin/export permission needed, no Graph API. Searches the person, opens the chat, and extracts every currently-loaded message (sender, ISO timestamp, text) straight from the chat pane DOM.
Edit Chat Message
Edit one of your own previously-sent messages in a 1:1 Teams chat, identified by its message id (mid), replacing its text.