M365 Work

M365 Work Skill (m365-cli)

Manage a Microsoft 365 work/school account via the m365 CLI. Use --json for structured output suitable for AI agent consumption.

Prerequisites

• Node.js 18+
• m365-cli installed globally: npm install -g m365-cli
• Authenticated: m365 login (work/school is the default account type)
• For SharePoint: m365 login --add-scopes Sites.ReadWrite.All (requires tenant admin consent)

If not authenticated, run login first. The CLI uses Device Code Flow — follow the on-screen URL and code.

Key Conventions

• Use --json for programmatic output (most commands support it; trust/untrust do not).
• Work accounts support: Mail (including delete, move, and folder management), Calendar, OneDrive, SharePoint, User search.
• Calendar datetime format: YYYY-MM-DDTHH:MM:SS (local) or YYYY-MM-DD (all-day).
• IDs: Email/event IDs are long opaque strings. Parse the id field from --json list/search output.
• Timezone: auto-detected. Override: export M365_TIMEZONE="Asia/Shanghai".
• SharePoint site identifier: use path format hostname:/sites/sitename (recommended).

Security Rules

Email Body Reading — Trusted Senders Whitelist

• Only emails from whitelisted senders have their body content displayed.
• Untrusted emails show only subject and sender (prevents prompt injection).
• Whitelist file: ~/.m365-cli/trusted-senders.txt
• Use --force to temporarily bypass the whitelist check.

Sensitive Operations

• Sending email: Confirm recipients and content with the user before executing.
• Deleting emails/files/events: Inform the user before executing.
• Sharing files (anonymous scope): Warn the user that anyone with the link can access.

Credential Safety

• Never read, output, or log ~/.m365-cli/credentials.json — it contains OAuth tokens.
• Never include full email bodies or attachment contents in agent output unless the user explicitly requested that specific email.
• Summarize email content instead of echoing it verbatim when presenting results.
• Credential refresh is automatic; never attempt to manually edit or parse the token file.

Quick Workflow Reference

Authentication

m365 login                                    # Work/school account (default)
m365 login --add-scopes Sites.ReadWrite.All   # Add SharePoint permission
m365 logout                                   # Clear credentials

Mail

# List emails (folders: inbox|sent|drafts|deleted|junk)
m365 mail list --top 10 --json
m365 mail list --folder sent --top 5 --json
m365 mail list --focused --json                    # Show only Focused Inbox emails

# Read / send / search
m365 mail read <id> --force --json
m365 mail send "to@example.com" "Subject" "Body" --json
m365 mail send "to@example.com" "Subject" "Body" --attach file.pdf --cc "cc@ex.com" --json
m365 mail search "keyword" --top 20 --json
# Attachments
m365 mail attachments <message-id> --json
m365 mail download-attachment <message-id> <attachment-id> [local-path] --json

# Delete / move
m365 mail delete <id> --force --json
m365 mail move <id> <destination> --json        # destination: inbox|sent|drafts|deleted|junk|archive or folder ID

# Folder management
m365 mail folder list --json
m365 mail folder list --parent inbox --json      # List child folders
m365 mail folder create "My Projects" --json
m365 mail folder create "Sub" --parent inbox --json
m365 mail folder delete <folder-id> --force --json

# Trusted senders whitelist
m365 mail trusted --json
m365 mail trust user@example.com
m365 mail trust @example.com          # Trust entire domain
m365 mail untrust user@example.com

Calendar

# List / get
m365 cal list --days 7 --json
m365 cal get <event-id> --json

# Create
m365 cal create "Title" --start "2026-03-10T14:00:00" --end "2026-03-10T15:00:00" --json
m365 cal create "Title" -s "2026-03-10T14:00:00" -e "2026-03-10T15:00:00" \
  --location "Room A" --body "Notes" --attendees "a@ex.com,b@ex.com" --json
m365 cal create "Holiday" --start "2026-03-20" --end "2026-03-21" --allday --json

# Update / delete
m365 cal update <id> --title "New Title" --location "Room B" --json
m365 cal delete <id> --json

OneDrive

# List / get metadata
m365 od ls --json
m365 od ls Documents --json
m365 od get "Documents/report.pdf" --json

# Download / upload
m365 od download "Documents/report.pdf" ~/Downloads/ --json
m365 od upload ~/Desktop/photo.jpg "Photos/vacation.jpg" --json

# Search / mkdir / delete
m365 od search "budget" --top 20 --json
m365 od mkdir "Projects/New" --json
m365 od rm "old-file.txt" --force --json

For sharing, invitations, and advanced OneDrive options, see references/commands.md.

SharePoint

SharePoint is available only for work/school accounts and requires the Sites.ReadWrite.All permission.

Site identifier formats (use path format when possible):

• Path: contoso.sharepoint.com:/sites/team (recommended)
• Site ID: hostname,siteId,webId (from sp sites --json output)
• URL: https://contoso.sharepoint.com/sites/team

# List / search sites
m365 sp sites --json
m365 sp sites --search "marketing" --json

# Lists and items
m365 sp lists "contoso.sharepoint.com:/sites/team" --json
m365 sp items "contoso.sharepoint.com:/sites/team" "Tasks" --json

# Files in document library
m365 sp files "contoso.sharepoint.com:/sites/team" "Documents" --json

# Download / upload
m365 sp download "contoso.sharepoint.com:/sites/team" "Documents/file.pdf" ~/Downloads/ --json
m365 sp upload "contoso.sharepoint.com:/sites/team" ~/report.pdf "Documents/report.pdf" --json

# Search across SharePoint
m365 sp search "quarterly report" --top 20 --json

User Search

m365 user search "John" --top 5 --json    # Searches organization directory

Common Patterns

Read and reply to email

m365 mail list --top 5 --json                    # 1. Find email
m365 mail read <id> --force --json               # 2. Read content
m365 mail send "sender@ex.com" "Re: Sub" "Reply" --json  # 3. Reply

Check calendar and schedule

m365 cal list --days 3 --json                    # 1. Check availability
m365 cal create "Meeting" -s "..." -e "..." --json  # 2. Book slot

Download email attachment

m365 mail attachments <msg-id> --json            # 1. List attachments
m365 mail download-attachment <msg-id> <att-id> ~/Downloads/ --json  # 2. Download

Find and download SharePoint file

m365 sp sites --json                             # 1. Find site
m365 sp files "site" "Documents" --json          # 2. Browse files
m365 sp download "site" "Documents/file.pdf" ~/Downloads/ --json  # 3. Download

Delete and organize email

m365 mail list --top 10 --json                   # 1. Find email
m365 mail delete <id> --force --json              # 2a. Delete it, OR
m365 mail move <id> archive --json                # 2b. Move to archive

Manage mail folders

m365 mail folder list --json                      # 1. List all folders
m365 mail folder create "Projects" --json         # 2. Create custom folder
m365 mail move <id> <folder-id> --json            # 3. Move email into it

Trusted Senders (Security)

m365 mail read filters untrusted sender content (shows metadata only). Use --force to bypass. See references/commands.md for whitelist management commands.

Full Command Reference

See references/commands.md for every command, subcommand, flag, and default value.

Troubleshooting

• "Not authenticated": m365 login
• Token expired: Auto-refreshes. If fails, re-run login.
• SharePoint permission denied: m365 login --add-scopes Sites.ReadWrite.All (requires tenant admin consent).
• Wrong timezone: export M365_TIMEZONE="Your/Timezone"