Trello Automation

Core Workflows

1. Create a Card on a Board

When to use: User wants to add a new card/task to a Trello board

Tool sequence:

1. TRELLO_GET_MEMBERS_BOARDS_BY_ID_MEMBER - List boards to find target board ID [Prerequisite]
2. TRELLO_GET_BOARDS_LISTS_BY_ID_BOARD - Get lists on board to find target list ID [Prerequisite]
3. TRELLO_ADD_CARDS - Create the card on the resolved list [Required]
4. TRELLO_ADD_CARDS_CHECKLISTS_BY_ID_CARD - Add a checklist to the card [Optional]
5. TRELLO_ADD_CARDS_CHECKLIST_CHECK_ITEM_BY_ID_CARD_BY_ID_CHECKLIST - Add items to the checklist [Optional]

Key parameters:

• idList: 24-char hex ID (NOT list name)
• name: Card title
• desc: Card description (supports Markdown)
• pos: Position ('top'/'bottom')
• due: Due date (ISO 8601 format)

Pitfalls:

• Store returned id (idCard) immediately; downstream checklist operations fail without it
• Checklist payload may be nested (data.data); extract idChecklist from inner object
• One API call per checklist item; large checklists can trigger rate limits

2. Manage Boards and Lists

When to use: User wants to view, browse, or restructure board layout

Tool sequence:

1. TRELLO_GET_MEMBERS_BOARDS_BY_ID_MEMBER - List all boards for the user [Required]
2. TRELLO_GET_BOARDS_BY_ID_BOARD - Get detailed board info [Required]
3. TRELLO_GET_BOARDS_LISTS_BY_ID_BOARD - Get lists (columns) on the board [Optional]
4. TRELLO_GET_BOARDS_MEMBERS_BY_ID_BOARD - Get board members [Optional]
5. TRELLO_GET_BOARDS_LABELS_BY_ID_BOARD - Get labels on the board [Optional]

Key parameters:

• idMember: Use 'me' for authenticated user
• filter: 'open', 'starred', or 'all'
• idBoard: 24-char hex or 8-char shortLink (NOT board name)

Pitfalls:

• Some runs return boards under response.data.details[]—don't assume flat top-level array
• Lists may be nested under results[0].response.data.details—parse defensively
• ISO 8601 timestamps with trailing 'Z' must be parsed as timezone-aware

3. Move Cards Between Lists

When to use: User wants to change a card's status by moving it to another list

Tool sequence:

1. TRELLO_GET_SEARCH - Find the card by name or keyword [Prerequisite]
2. TRELLO_GET_BOARDS_LISTS_BY_ID_BOARD - Get destination list ID [Prerequisite]
3. TRELLO_UPDATE_CARDS_BY_ID_CARD - Update card's idList to move it [Required]

Key parameters:

• idCard: Card ID from search
• idList: Destination list ID
• pos: Optional ordering within new list

Pitfalls:

• Search returns partial matches; verify card name before updating
• Moving doesn't update position within new list; set pos if ordering matters

4. Assign Members to Cards

When to use: User wants to assign team members to cards

Tool sequence:

1. TRELLO_GET_BOARDS_MEMBERS_BY_ID_BOARD - Get member IDs from the board [Prerequisite]
2. TRELLO_ADD_CARDS_ID_MEMBERS_BY_ID_CARD - Add a member to the card [Required]

Key parameters:

• idCard: Target card ID
• value: Member ID to assign

Pitfalls:

• UPDATE_CARDS_ID_MEMBERS replaces entire member list; use ADD_CARDS_ID_MEMBERS to append
• Member must have board permissions

5. Search and Filter Cards

When to use: User wants to find specific cards across boards

Tool sequence:

1. TRELLO_GET_SEARCH - Search by query string [Required]

Key parameters:

• query: Search string (supports board:, list:, label:, is:open/archived operators)
• modelTypes: Set to 'cards'
• partial: Set to 'true' for prefix matching

Pitfalls:

• Search indexing has delay; newly created cards may not appear for several minutes
• For exact name matching, use TRELLO_GET_BOARDS_CARDS_BY_ID_BOARD and filter locally
• Query uses word tokenization; common words may be ignored as stop words

6. Add Comments and Attachments

When to use: User wants to add context to an existing card

Tool sequence:

1. TRELLO_ADD_CARDS_ACTIONS_COMMENTS_BY_ID_CARD - Post a comment on the card [Required]
2. TRELLO_ADD_CARDS_ATTACHMENTS_BY_ID_CARD - Attach a file or URL [Optional]

Key parameters:

• text: Comment text (1-16384 chars, supports Markdown and @mentions)
• url OR file: Attachment source (not both)
• name: Attachment display name
• mimeType: File MIME type

Pitfalls:

• Comments don't support file attachments; use the attachment tool separately
• Attachment deletion is irreversible

Common Patterns

ID Resolution

Always resolve display names to IDs before operations:

• Board name → Board ID: TRELLO_GET_MEMBERS_BOARDS_BY_ID_MEMBER with idMember='me'
• List name → List ID: TRELLO_GET_BOARDS_LISTS_BY_ID_BOARD with resolved board ID
• Card name → Card ID: TRELLO_GET_SEARCH with query string
• Member name → Member ID: TRELLO_GET_BOARDS_MEMBERS_BY_ID_BOARD

Pagination

Most list endpoints return all items. For boards with 1000+ cards, use limit and before parameters on card listing endpoints.

Rate Limits

300 requests per 10 seconds per token. Use TRELLO_GET_BATCH for bulk read operations to stay within limits.

Known Pitfalls

• ID Requirements: Nearly every tool requires IDs, not display names. Always resolve names to IDs first.
• Board ID Format: Board IDs must be 24-char hex or 8-char shortLink. URL slugs like 'my-board' are NOT valid.
• Search Delays: Search indexing has delays; newly created/updated cards may not appear immediately.
• Nested Responses: Response data is often nested (data.data or data.details[]); parse defensively.
• Rate Limiting: 300 req/10s per token. Batch reads with TRELLO_GET_BATCH.

Quick Reference

When to Use

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