microsoft-teams-cli 0.1.0

Microsoft Teams CLI — chat, send, and manage Teams from the terminal

microsoft-teams-cli

Chat, send, and manage Microsoft Teams from the terminal.

Uses MSAL token extraction via Playwright — no Azure app registration, admin consent, or API keys required.

Disclaimer: This is an unofficial, community-driven project. It is not affiliated with, endorsed by, or supported by Microsoft Corporation. "Microsoft Teams" and "Microsoft 365" are trademarks of Microsoft Corporation.

This tool accesses Microsoft Teams services using intercepted browser tokens and undocumented internal APIs (IC3 Chat Service, UPS Presence). Use of this tool may violate Microsoft's Terms of Service or your organization's acceptable use policies. The authors accept no responsibility for account suspensions, data loss, or other consequences arising from the use of this tool.

Use at your own risk. This software is provided "as is", without warranty of any kind. See LICENSE for details.

Install

pip install microsoft-teams-cli
playwright install chromium

Auth

teams login          # opens browser, captures tokens automatically
teams login --force  # force re-login, ignore saved session
teams whoami         # verify current user

Token is cached at ~/.cache/teams-cli/tokens.json. Auto re-login on 401. You can also set TEAMS_IC3_TOKEN env var directly.

Usage

Chats

teams chats                        # list recent chats
teams chats --unread               # unread only
teams chats -n 10                  # last 10 chats
teams chats --offset 25            # skip first 25 (pagination)
teams chat 1                       # read messages from chat #1
teams chat 1 -n 50                 # last 50 messages
teams chat 1 --after 2026-03-01    # after date
teams chat 1 --before 2026-03-15   # before date
teams unread                       # list unread chats with message preview

Read / Search

teams read 3                       # read message #3 in detail
teams read 3 --raw                 # raw HTML body
teams search "keyword"             # search messages
teams search "keyword" --max 10 --from "John" --after 2026-03-01
teams search "keyword" --chat 1    # search within a specific chat
teams user-search "john"           # find users by name or email

Send / Reply

All send commands show a confirmation prompt before sending. Use -y to skip.

teams send "John" "Hello!"                 # send to person by name
teams send "[e-mail]" "Hello!" -y  # send by email, skip confirm
teams send "John" "<b>Bold</b>" --html     # send HTML message
teams chat-send 1 "Hello team!"            # send to chat #1
teams chat-send 1 "Meeting at 3pm" -y      # skip confirmation
teams reply 42 "On it."                    # reply to message #42
teams reply 42 "Sounds good" -y            # reply, skip confirmation

Files

teams send-file 1 report.pdf                  # upload file to chat #1
teams send-file 1 report.pdf --message "FYI"  # with a message
teams attachments 42                          # list attachments on message #42
teams attachments 42 --download               # download all
teams attachments 42 -d --save-to ./files     # download to specific dir

Message Management

teams edit 42 "Updated text"        # edit message #42
teams delete 42                     # delete (with confirmation)
teams delete 42 -y                  # delete without confirmation
teams forward 42 1 --comment "FYI"  # forward message to chat #1
teams mark-read 42 43 44            # mark multiple as read
teams mark-read 42 --unread         # mark as unread

Group Chat

teams group-chat "Alice" "Bob" --topic "Project X" --message "Kickoff!" -y

Reactions (multi-ID)

teams react like 42 43 44 -y       # like/heart/laugh/surprised/sad/angry
teams unreact like 42 43 44 -y

Teams & Channels

teams teams                         # list your teams
teams channels 1                    # list channels in team #1

Scheduled Messages

teams schedule 1 "Reminder" "+1h"            # send in 1 hour
teams schedule 1 "Standup" "tomorrow 09:00"  # send tomorrow at 9am
teams schedule 1 "Report" "2026-03-15T10:00" # specific datetime
teams schedule-list                          # list scheduled messages
teams schedule-cancel 1                      # cancel by list number
teams schedule-run                           # run the scheduler (sends due messages)

Time formats: +30m, +1h, +2h30m, today 17:00, tomorrow 09:00, 2026-03-15T10:00.

Presence

teams status                        # show your current status
teams set-status Available          # set status
teams set-status Busy --expiry +1h  # set for 1 hour
teams set-status DoNotDisturb --expiry +2h -y

Available statuses: Available, Busy, DoNotDisturb, BeRightBack, Away, Offline.

JSON Output

Auto-JSON on pipe: When stdout is piped, JSON output is automatic — no --json flag needed.

teams chats | jq '.data[0].topic'          # auto-JSON when piped
teams chats --json                         # explicit JSON in terminal

All JSON output uses a structured envelope:

{"ok": true, "schema_version": "1.0", "data": [...]}

How It Works

1. teams login opens Teams in Chromium via Playwright
2. You log in normally (password, MFA, SSO)
3. Teams SPA stores MSAL tokens in localStorage
4. CLI extracts multiple tokens by audience:
   • IC3 for chats/messages/group-chats
   • Graph for user search/file uploads
   • Presence for UPS presence read/write
   • CSA for teams/channels listing
   • Substrate for search
5. Tokens are cached at ~/.cache/teams-cli/tokens.json
6. Messages get short display numbers (#1, #2...) mapped to real Teams IDs
7. Auto re-login on token expiry via cached browser SSO state

Security Notice

This tool caches sensitive authentication data on your local machine:

• Bearer tokens (~/.cache/teams-cli/tokens.json) — grants access to your Teams chats, messages, and profile until they expire. Protect this file as you would a password.
• Browser session state (~/.cache/teams-cli/browser-state.json) — contains cookies and SSO state that can be used to obtain new tokens without re-authentication.

Both files are created with 600 permissions (owner-only read/write) on Unix systems. Never share these files or commit them to version control.

To revoke access, delete the cache directory:

rm -rf ~/.cache/teams-cli/

Undocumented API Notice

Most commands use the IC3 Chat Service API, which is a reverse-engineered internal Teams API — not a public or documented Microsoft API. The UPS Presence API (forceavailability) is also undocumented. These endpoints may change or stop working at any time without notice. User search and file uploads use the Microsoft Graph API, which is a documented public API.

Config

~/.config/teams-cli/config.yaml:

max_messages: 25
max_chats: 25
browser:
  headless: false
  timeout: 120
output_format: table
jitter:
  read_base: 0.3
  write_base: 2.0

Environment Variables

Variable	Description
TEAMS_IC3_TOKEN	Override IC3 token (skip login)
TEAMS_REGION	Override region (default: auto-detected)
TEAMS_PROXY	HTTP proxy URL
TEAMS_TIMEOUT	HTTP request timeout in seconds (default: 30)
TEAMS_CLI_CACHE	Cache directory (default: ~/.cache/teams-cli)
TEAMS_CLI_CONFIG	Config directory (default: ~/.config/teams-cli)

Development

git clone https://github.com/yusufaltunbicak/microsoft-teams-cli.git
cd microsoft-teams-cli
pip install -e ".[test]"
playwright install chromium
pytest