/trello

Connect to Trello to manage boards, lists, cards, checklists, labels and more. Pure Ruby, zero gems — stdlib only.

Structure

scripts/
├── auth.rb            # API key + token auth + trello_request helper (required by all scripts)
├── check_setup.rb     # Check if credentials exist (outputs OK or SETUP_NEEDED)
├── save_token.rb      # Save and validate API key + token
├── boards.rb          # List boards for the authenticated member
├── board.rb           # Get a single board by ID
├── lists.rb           # List lists in a board
├── cards.rb           # List cards in a list or board
├── card.rb            # Get a single card by ID
├── create_card.rb     # Create a card in a list
├── update_card.rb     # Update a card (name, desc, due, idList, closed)
├── delete_card.rb     # Delete a card
├── move_card.rb       # Move a card to another list
├── create_list.rb     # Create a list in a board
├── update_list.rb     # Update a list (name, closed, pos)
├── labels.rb          # List labels on a board
├── create_label.rb    # Create a label on a board
├── checklists.rb      # List checklists on a card
├── create_checklist.rb # Create a checklist on a card
├── create_checkitem.rb # Add an item to a checklist
├── update_checkitem.rb # Update a check item (name, state)
├── members.rb         # List members of a board
├── add_member.rb      # Add a member to a card
├── search.rb          # Search cards, boards, members, organizations
└── comments.rb        # List and add comments on a card

Setup (check before using)

ruby ~/.claude/skills/trello/scripts/check_setup.rb

If the output is OK, proceed to the Flow section.

If the output is SETUP_NEEDED, guide the user step by step. Present ONE step at a time, wait for the user to confirm before moving to the next.

Step 1 — Ask the user to get their API key and token:

You need a Trello API key and token. Follow these steps:

1. Go to https://trello.com/power-ups/admin and log in
2. Click New to create a new Power-Up (or use an existing one)
3. Give it a name (e.g. "HiTank"), fill required fields, then click Create
4. Go to the API Key tab and click Generate a new API Key
5. Copy the API Key
6. Next to the API key, click the Token link to generate a token — authorize access and copy the Token

Paste the API key here first.

Step 2 — When the user pastes the API key, ask for the token:

Now paste the Token.

Step 3 — When the user pastes the token, save both:

ruby ~/.claude/skills/trello/scripts/save_token.rb 'API_KEY' 'TOKEN'

If the script outputs an error, the credentials are invalid. Ask the user to double-check and try again.

If setup is not complete, DO NOT proceed to the Flow. Complete all steps first.

Flow

The argument $ARGUMENTS may contain a board name or card reference.

Step 1: List boards

ruby ~/.claude/skills/trello/scripts/boards.rb

Present the boards. If there is only one, use it automatically. Otherwise ask which board to work with.

Step 2: List lists

ruby ~/.claude/skills/trello/scripts/lists.rb BOARD_ID

Show the lists. Ask which list to work with or what action to take.

Step 3: Actions

List cards in a list:

ruby ~/.claude/skills/trello/scripts/cards.rb LIST_ID
ruby ~/.claude/skills/trello/scripts/cards.rb LIST_ID --limit 10

List all cards on a board:

ruby ~/.claude/skills/trello/scripts/cards.rb --board BOARD_ID
ruby ~/.claude/skills/trello/scripts/cards.rb --board BOARD_ID --limit 20

Get a single card:

ruby ~/.claude/skills/trello/scripts/card.rb CARD_ID

Create a card (requires user confirmation):

Show the card details first, then ask to confirm before creating.

ruby ~/.claude/skills/trello/scripts/create_card.rb LIST_ID "Card Name" --desc "Description" --due "2025-12-31" --idLabels "LABEL_ID1,LABEL_ID2"

Update a card (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/update_card.rb CARD_ID --name "New Name" --desc "New Desc" --due "2025-12-31" --idList LIST_ID --closed true

Delete a card (requires user confirmation):

Show the card first, then ask: "Do you want to delete this card?" Only execute after a "yes".

ruby ~/.claude/skills/trello/scripts/delete_card.rb CARD_ID

Move a card to another list (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/move_card.rb CARD_ID TARGET_LIST_ID

Create a list (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/create_list.rb BOARD_ID "List Name"

Update a list (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/update_list.rb LIST_ID --name "New Name" --closed true --pos top

List labels on a board:

ruby ~/.claude/skills/trello/scripts/labels.rb BOARD_ID

Create a label (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/create_label.rb BOARD_ID "Label Name" --color green

List checklists on a card:

ruby ~/.claude/skills/trello/scripts/checklists.rb CARD_ID

Create a checklist (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/create_checklist.rb CARD_ID "Checklist Name"

Add a check item (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/create_checkitem.rb CHECKLIST_ID "Item name"

Update a check item (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/update_checkitem.rb CARD_ID CHECKITEM_ID --state complete
ruby ~/.claude/skills/trello/scripts/update_checkitem.rb CARD_ID CHECKITEM_ID --name "New name" --state incomplete

List board members:

ruby ~/.claude/skills/trello/scripts/members.rb BOARD_ID

Add a member to a card (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/add_member.rb CARD_ID MEMBER_ID

Search:

ruby ~/.claude/skills/trello/scripts/search.rb "query text"
ruby ~/.claude/skills/trello/scripts/search.rb "query text" --cards --boards

List comments on a card:

ruby ~/.claude/skills/trello/scripts/comments.rb CARD_ID

Add a comment (requires user confirmation):

ruby ~/.claude/skills/trello/scripts/comments.rb CARD_ID --add "Comment text here"

Notes

• Pure Ruby, zero gems — stdlib only (json, net/http, uri, fileutils)
• Auth via API key + token as query params (?key=KEY&token=TOKEN)
• Credentials file: ~/.config/trello/credentials.json (outside the repo, never commit)
• Creating, updating, deleting cards, moving cards, creating lists/labels/checklists, adding members and comments require explicit user confirmation
• Base URL: https://api.trello.com/1
• Label colors: yellow, purple, blue, red, green, orange, black, sky, pink, lime
• Checklist item states: complete or incomplete
• Card positions: top, bottom, or a positive float