Trello MCP Server

Implementation Reference

• src/index.ts:338-374 (handler)

  The handler function that executes the create-label tool logic by sending a POST request to the Trello API to create a new label on the specified board.

  async ({ boardId, name, color }) => {
  	try {
  		const response = await fetch(
  			`https://api.trello.com/1/labels?key=${trelloApiKey}&token=${trelloApiToken}`,
  			{
  				method: 'POST',
  				headers: {
  					'Content-Type': 'application/json',
  				},
  				body: JSON.stringify({
  					name,
  					color,
  					idBoard: boardId,
  				}),
  			}
  		);
  		const data = await response.json();
  		return {
  			content: [
  				{
  					type: 'text',
  					text: JSON.stringify(data),
  				},
  			],
  		};
  	} catch (error) {
  		return {
  			content: [
  				{
  					type: 'text',
  					text: `Error creating label: ${error}`,
  				},
  			],
  			isError: true,
  		};
  	}
  }

• src/index.ts:332-337 (schema)

  Zod schema defining the input parameters for the create-label tool: boardId, name, and color.

  	boardId: z.string().describe('ID of the board to create the label in'),
  	name: z.string().describe('Name of the label'),
  	color: z
  		.enum(['yellow', 'purple', 'blue', 'red', 'green', 'orange', 'black', 'sky', 'pink', 'lime'])
  		.describe('Color of the label'),
  },

• src/index.ts:330-375 (registration)

  Registration of the create-label tool using server.tool, including schema and inline handler.

  	'create-label',
  	{
  		boardId: z.string().describe('ID of the board to create the label in'),
  		name: z.string().describe('Name of the label'),
  		color: z
  			.enum(['yellow', 'purple', 'blue', 'red', 'green', 'orange', 'black', 'sky', 'pink', 'lime'])
  			.describe('Color of the label'),
  	},
  	async ({ boardId, name, color }) => {
  		try {
  			const response = await fetch(
  				`https://api.trello.com/1/labels?key=${trelloApiKey}&token=${trelloApiToken}`,
  				{
  					method: 'POST',
  					headers: {
  						'Content-Type': 'application/json',
  					},
  					body: JSON.stringify({
  						name,
  						color,
  						idBoard: boardId,
  					}),
  				}
  			);
  			const data = await response.json();
  			return {
  				content: [
  					{
  						type: 'text',
  						text: JSON.stringify(data),
  					},
  				],
  			};
  		} catch (error) {
  			return {
  				content: [
  					{
  						type: 'text',
  						text: `Error creating label: ${error}`,
  					},
  				],
  				isError: true,
  			};
  		}
  	}
  );