Edit Chat Message
Input
mid requiredMessage id of your own message to edit, taken verbatim from get_chat_messages for this chat. Do not use the id returned by send_chat_message: it is not the id Teams stores for the message, so it cannot be found here. The id is an opaque string (older messages carry 13 digits, newer ones 19); never construct or parse it, pass through exactly what get_chat_messages returned.
newText requiredReplacement text for the message.
contactName requiredDisplay name of the person whose 1:1 chat to open, as it appears in Teams (e.g. "April Deere").
Output
mid requiredtext requiredText of the message read back after the edit.
edited requiredFAQ
Send Chat Message
Send a message in a 1:1 Teams chat by contact name — finds the person, opens their chat, sends the message, then reads the sent message back to confirm it posted.
Get Chat Messages
Read messages from a 1:1 Teams chat by contact name. Finds the person, opens their chat, and returns every currently-loaded message with sender, ISO timestamp and text. Needs no admin or export permission.
Teams whoami
Report which Microsoft Teams account this browser is signed in as — work or personal: email, name, whether it is a personal (consumer) or work account, and which Teams host it lives on (personal accounts are redirected to teams.live.com). Being signed out is reported as a normal answer (loggedIn false), not an error, so it can be used to check a session — and pick the right Teams host — before running other Teams scripts.