Command Reference

Tasks

`tandem add <title>`

Create a new task. By default, opens an AI-assisted conversation to fill in details — Tandem asks clarifying questions, proposes a plan, and saves once you confirm.

tandem add "prep for the board meeting"
tandem add "fix login bug"

Use --quick to skip the AI and create directly with flags:

tandem add "quick note" --quick
tandem add "submit report" --quick --priority must-do --deadline 2026-06-15

Flags (with --quick):

-p, --priority — must-do | good-to-do | optional
-d, --deadline — date as YYYY-MM-DD
-t, --tags — comma-separated tags

`tandem list` / `tandem ls`

List your active tasks.

tandem list
tandem list --today    # tasks due today
tandem list --week     # tasks due in the next 7 days

`tandem done <id>`

Mark a task as complete. Use the first 8 characters of the task ID shown in tandem list.

tandem done a1b2c3d4

`tandem drop <id>`

Cancel a task.

tandem drop a1b2c3d4

`tandem task category <id> <category>`

Set the category on a task.

tandem task category a1b2c3d4 Backend

`tandem chat <message>`

Start an AI conversation to plan a task. Same as tandem add but more explicit.

tandem chat "I need to prepare a demo for next week"

`tandem today`

Show Tandem’s suggested plan for today.

tandem today

`tandem ai <instruction>`

Natural language task management — update, retag, reschedule, or modify tasks using plain English.

tandem ai "move all work tasks to next week"
tandem ai "tag everything without a category as Personal"
tandem ai "mark the AMEX task as must-do"

Projects

`tandem project list`

List all your projects.

tandem project list

`tandem project create <name>`

Create a new project.

tandem project create "Home Renovation"

`tandem project set <task-id> <project>`

Assign a task to a project. Creates the project if it doesn’t exist.

tandem project set a1b2c3d4 "Home Renovation"

`tandem project setall <project> <ids...>`

Assign multiple tasks to a project at once.

tandem project setall "Home Renovation" a1b2c3d4 e5f6g7h8 i9j0k1l2

List categories for a project.

tandem project categories list "TellTandem"

`tandem project categories add <project> <category>`

Add a category to a project.

tandem project categories add "TellTandem" Backend

`tandem project categories set <project> <categories...>`

Replace all categories for a project.

tandem project categories set "TellTandem" Frontend Backend Database CLI DevOps Design AI Marketing Business

Personality

`tandem personality show`

Show your current personality setting.

tandem personality show

`tandem personality set <text>`

Set your personality in one command.

tandem personality set "Be direct and terse. No pleasantries."

`tandem personality edit`

Interactively edit your personality with a prompt.

tandem personality edit

`tandem personality clear`

Clear your personality and return to Tandem’s default style.

tandem personality clear

Account

Authenticate via browser.

tandem login

`tandem logout`

Clear stored credentials.

tandem logout

`tandem whoami`

Show the currently logged-in account.

tandem whoami

Command Reference

Tasks

`tandem add <title>`

`tandem list` / `tandem ls`

`tandem done <id>`

`tandem drop <id>`

`tandem task category <id> <category>`

`tandem chat <message>`

`tandem today`

`tandem ai <instruction>`

Projects

`tandem project list`

`tandem project create <name>`

`tandem project set <task-id> <project>`

`tandem project setall <project> <ids...>`

`tandem project categories add <project> <category>`

`tandem project categories set <project> <categories...>`

Categories

`tandem categories add <category>`

`tandem categories set <categories...>`

Personality

`tandem personality show`

`tandem personality set <text>`

`tandem personality edit`

`tandem personality clear`

Account

`tandem logout`

`tandem whoami`

​Tasks

​tandem add <title>

​tandem list / tandem ls

​tandem done <id>

​tandem drop <id>

​tandem task category <id> <category>

​tandem chat <message>

​tandem today

​tandem ai <instruction>

​Projects

​tandem project list

​tandem project create <name>

​tandem project set <task-id> <project>

​tandem project setall <project> <ids...>

​tandem project categories list <project>

​tandem project categories add <project> <category>

​tandem project categories set <project> <categories...>

​Categories

​tandem categories list

​tandem categories add <category>

​tandem categories set <categories...>

​Personality

​tandem personality show

​tandem personality set <text>

​tandem personality edit

​tandem personality clear

​Account

​tandem login

​tandem logout

​tandem whoami

Tasks

`tandem add <title>`

`tandem list` / `tandem ls`

`tandem done <id>`

`tandem drop <id>`

`tandem task category <id> <category>`

`tandem chat <message>`

`tandem today`

`tandem ai <instruction>`

Projects

`tandem project list`

`tandem project create <name>`

`tandem project set <task-id> <project>`

`tandem project setall <project> <ids...>`

`tandem project categories list <project>`

`tandem project categories add <project> <category>`

`tandem project categories set <project> <categories...>`

Categories

`tandem categories list`

`tandem categories add <category>`

`tandem categories set <categories...>`

Personality

`tandem personality show`

`tandem personality set <text>`

`tandem personality edit`

`tandem personality clear`

Account

`tandem login`

`tandem logout`

`tandem whoami`