Trello Desktop MCP

Instructions

Implementation Reference

• src/tools/lists.ts:262-303 (handler)

  The handleTrelloAddComment function handles the logic for adding a comment to a Trello card.

  export async function handleTrelloAddComment(args: unknown) {
    try {
      const { apiKey, token, cardId, text } = validateAddComment(args);
      const client = new TrelloClient({ apiKey, token });
      
      const response = await client.addCommentToCard(cardId, text);
      const comment = response.data;
      
      const result = {
        summary: `Added comment to card ${cardId}`,
        comment: {
          id: comment.id,
          type: comment.type,
          date: comment.date,
          memberCreator: comment.memberCreator ? {
            id: comment.memberCreator.id,
            fullName: comment.memberCreator.fullName,
            username: comment.memberCreator.username
          } : null,
          data: {
            text: comment.data?.text,
            card: comment.data?.card ? {
              id: comment.data.card.id,
              name: comment.data.card.name
            } : null
          }
        },
        rateLimit: response.rateLimit
      };
      
      return {
        content: [
          {
            type: 'text' as const,
            text: JSON.stringify(result, null, 2)
          }
        ]
      };
    } catch (error) {
      const errorMessage = error instanceof z.ZodError 
        ? formatValidationError(error)
        : error instanceof Error 

• src/tools/lists.ts:233-260 (schema)

  The trelloAddCommentTool object defines the tool name, description, and input schema.

  export const trelloAddCommentTool: Tool = {
    name: 'trello_add_comment',
    description: 'Add a comment to a Trello card. Use this to add notes, updates, or discussions to cards.',
    inputSchema: {
      type: 'object',
      properties: {
        apiKey: {
          type: 'string',
          description: 'Trello API key (automatically provided by Claude.app from your stored credentials)'
        },
        token: {
          type: 'string',
          description: 'Trello API token (automatically provided by Claude.app from your stored credentials)'
        },
        cardId: {
          type: 'string',
          description: 'ID of the card to add comment to (you can get this from board details or searches)',
          pattern: '^[a-f0-9]{24}$'
        },
        text: {
          type: 'string',
          description: 'Text content of the comment',
          minLength: 1
        }
      },
      required: ['apiKey', 'token', 'cardId', 'text']
    }
  };