ArtifactHub MCP Server

Instructions

Implementation Reference

• src/tools/template.ts:7-75 (handler)

  Registration and implementation handler for the 'helm-chart-template' tool.

  export function registerTemplateTool(server: McpServer) {
  	return server.tool(
  		"helm-chart-template",
  		"Get the content of a template file from a Helm chart in Artifact Hub",
  		{
  			chartRepo: z.string().describe("The Helm chart repository name"),
  			chartName: z.string().describe("The Helm chart name"),
  			filename: z
  				.string()
  				.describe(
  					"Exact filename (full path) to filter templates by (case-sensitive)"
  				),
  			version: z
  				.string()
  				.optional()
  				.describe("The chart version (optional, defaults to latest)"),
  		},
  		async ({ chartRepo, chartName, filename, version }: TemplatesParams) => {
  			try {
  				let packageId: string;
  				let chartVersion: string;
  
  				// First get the chart info
  				const chartInfo = await getChartInfo(chartRepo, chartName);
  				packageId = chartInfo.package_id;
  
  				// If version is not provided, use the latest version
  				chartVersion = version || chartInfo.version;
  
  				// Get the templates
  				const templatesResult = await getChartTemplates(
  					packageId,
  					chartVersion
  				);
  
  				// Filter templates by exact filename match
  				const filteredTemplates = templatesResult.templates.filter(
  					(template) => template.name === filename
  				);
  
  				// Format the response
  				const formattedResponse = filteredTemplates
  					.map((template) => {
  						return `--- Template: ${template.name} ---\n${template.content}\n\n`;
  					})
  					.join("");
  
  				return {
  					content: [
  						{
  							type: "text",
  							text:
  								formattedResponse ||
  								"No matching templates found for this chart",
  						},
  					],
  				};
  			} catch (error) {
  				return {
  					content: [
  						{
  							type: "text",
  							text: `Error retrieving templates: ${(error as Error).message}`,
  						},
  					],
  				};
  			}
  		}
  	);