Trello MCP Server

Implementation Reference

• src/index.ts:86-123 (handler)

  The handler function executes the create-card tool by sending a POST request to the Trello API to create a new card in the specified list, returning the card data or error.

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

• src/index.ts:81-85 (schema)

  Zod input schema defining parameters: name (required string), description (optional string), listId (required string).

  {
  	name: z.string(),
  	description: z.string().optional(),
  	listId: z.string(),
  },

• src/index.ts:79-124 (registration)

  Registration of the 'create-card' tool on the MCP server using server.tool(), including inline schema and handler.

  server.tool(
  	'create-card',
  	{
  		name: z.string(),
  		description: z.string().optional(),
  		listId: z.string(),
  	},
  	async ({ name, description, listId }) => {
  		try {
  			const response = await fetch(
  				`https://api.trello.com/1/cards?key=${trelloApiKey}&token=${trelloApiToken}`,
  				{
  					method: 'POST',
  					headers: {
  						'Content-Type': 'application/json',
  					},
  					body: JSON.stringify({
  						name,
  						desc: description || '',
  						idList: listId,
  						pos: 'bottom',
  					}),
  				}
  			);
  			const data = await response.json();
  			return {
  				content: [
  					{
  						type: 'text',
  						text: JSON.stringify(data),
  					},
  				],
  			};
  		} catch (error) {
  			return {
  				content: [
  					{
  						type: 'text',
  						text: `Error creating card: ${error}`,
  					},
  				],
  				isError: true,
  			};
  		}
  	}
  );