> ## Documentation Index
> Fetch the complete documentation index at: https://learn.workflow.dog/llms.txt
> Use this file to discover all available pages before exploring further.

# Add Members

> Assign board members to a Trello card.

**Add Members** assigns one or more members without replacing the card's
current members.

## Inputs

| Input                   | Type            | Required | Description                                                         |
| ----------------------- | --------------- | -------- | ------------------------------------------------------------------- |
| **Third-party account** | Trello account  | Yes      | An account with write access to the card.                           |
| **Card ID or URL**      | String          | Yes      | A card ID, short link, or complete card URL.                        |
| **Members**             | List of strings | Yes      | Member IDs, usernames, or full names. Matching is case-insensitive. |

## Outputs

| Output      | Type   | Description                              |
| ----------- | ------ | ---------------------------------------- |
| **Card**    | Object | The card after the members are assigned. |
| **Card ID** | String | The updated card's ID.                   |

Member IDs take precedence over usernames, and usernames take precedence over
full names.

<Note>
  A full name shared by multiple board members is ambiguous. Use a member ID or
  unique username instead.
</Note>