Trello MCP Server

Instructions

Implementation Reference

• src/index.ts:194-200 (handler)

  Handler logic for the 'update_card' tool: parses arguments, calls TrelloClient.updateCard, and returns the updated card as JSON.

  case 'update_card': {
    const { card_id, update_data } = (request.params.arguments as { request: UpdateCardRequest }).request;
    const updatedCard = await this.trelloClient.updateCard(card_id, update_data);
    return {
      content: [{ type: 'text', text: JSON.stringify(updatedCard, null, 2) }],
    };
  }

• src/types.ts:58-61 (schema)

  TypeScript interface defining the input structure for update_card: card_id and update_data.

  export interface UpdateCardRequest {
    card_id: string;
    update_data: Partial<Card>;
  }

• src/index.ts:132-157 (registration)

  Tool registration in ListToolsRequestHandler, including name, description, and input schema matching UpdateCardRequest.

  {
    name: 'update_card',
    description: 'Update properties of a specific card',
    inputSchema: {
      type: 'object',
      properties: {
        request: {
          type: 'object',
          properties: {
            card_id: {
              type: 'string',
              description: 'ID of the card',
            },
            update_data: {
              type: 'object',
              description: 'Properties to update on the card',
              additionalProperties: true,
            },
          },
          required: ['card_id', 'update_data'],
        },
      },
      required: ['request'],
      title: 'update_cardArguments',
    },
  },

• src/trello-client.ts:45-51 (helper)

  Core implementation of card update via Trello API using axios PUT request.

  async updateCard(cardId: string, updateData: Partial<Card>): Promise<Card> {
    const response = await axios.put(
      `${this.baseUrl}/cards/${cardId}?${this.getAuthParams()}`,
      updateData
    );
    return response.data;
  }