marketo_get_channels

Instructions

Implementation Reference

• src/index.ts:185-191 (handler)

  The handler function that executes the 'marketo_get_channels' tool logic. It takes optional maxReturn and offset parameters, constructs a query string, and calls the Marketo Asset API GET /asset/v1/channels.json endpoint.

  tool(async ({ maxReturn = 200, offset = 0 }) => {
    const params = new URLSearchParams({
      maxReturn: maxReturn.toString(),
      offset: offset.toString(),
    });
    return makeApiRequest(`/asset/v1/channels.json?${params.toString()}`, 'GET');
  })

• src/index.ts:181-184 (schema)

  Input schema for the tool: optional 'maxReturn' (number) and 'offset' (number) parameters, defined using Zod.

  {
    maxReturn: z.number().optional(),
    offset: z.number().optional(),
  },

• src/index.ts:178-192 (registration)

  Registration of the 'marketo_get_channels' tool with the MCP server using server.tool(), including name, description, schema, and handler.

  server.tool(
    'marketo_get_channels',
    'List all program channels in the instance. Channels define the progression statuses available to programs (e.g., Webinar: Invited > Registered > Attended).',
    {
      maxReturn: z.number().optional(),
      offset: z.number().optional(),
    },
    tool(async ({ maxReturn = 200, offset = 0 }) => {
      const params = new URLSearchParams({
        maxReturn: maxReturn.toString(),
        offset: offset.toString(),
      });
      return makeApiRequest(`/asset/v1/channels.json?${params.toString()}`, 'GET');
    })
  );

• src/index.ts:23-53 (helper)

  The makeApiRequest helper function that handles authentication token injection, HTTP request execution via Axios, and error handling for all API calls including this tool.

  async function makeApiRequest(
    endpoint: string,
    method: string,
    data?: any,
    contentType: string = 'application/json'
  ) {
    const token = await tokenManager.getToken();
    const headers: Record<string, string> = {
      Authorization: `Bearer ${token}`,
    };
  
    if (contentType) {
      headers['Content-Type'] = contentType;
    }
  
    try {
      const response = await axios({
        url: `${MARKETO_BASE_URL}${endpoint}`,
        method,
        data:
          contentType === 'application/x-www-form-urlencoded'
            ? new URLSearchParams(data).toString()
            : data,
        headers,
      });
      return response.data;
    } catch (error: any) {
      console.error('API request failed:', error.response?.data || error.message);
      throw error;
    }
  }

• src/index.ts:55-73 (helper)

  The 'tool' wrapper function that wraps handlers with error handling and formats responses into MCP content blocks.

  function tool<T>(handler: (args: T) => Promise<unknown>) {
    return async (args: T) => {
      try {
        const response = await handler(args);
        return {
          content: [{ type: 'text' as const, text: JSON.stringify(response, null, 2) }],
        };
      } catch (error: any) {
        return {
          content: [
            {
              type: 'text' as const,
              text: `Error: ${error.response?.data?.message || error.message}`,
            },
          ],
          isError: true,
        };
      }
    };