ArtifactHub MCP Server

Instructions

Implementation Reference

• src/tools/values.ts:19-53 (handler)

  The handler logic for the 'helm-chart-values' tool, which fetches chart information and then the values.yaml.

  	async ({ chartRepo, chartName, version }: ValuesParams) => {
  		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 values.yaml
  			const valuesYaml = await getChartValues(packageId, chartVersion);
  
  			return {
  				content: [
  					{
  						type: "text",
  						text: valuesYaml,
  					},
  				],
  			};
  		} catch (error) {
  			return {
  				content: [
  					{
  						type: "text",
  						text: `Error retrieving values.yaml: ${(error as Error).message}`,
  					},
  				],
  			};
  		}
  	}
  );

• src/tools/values.ts:7-54 (registration)

  Registration of the 'helm-chart-values' tool within the MCP server.

  export function registerValuesTool(server: McpServer) {
  	return server.tool(
  		"helm-chart-values",
  		"Get the values.yaml file for a specific Helm chart from Artifact Hub",
  		{
  			chartRepo: z.string().describe("The Helm chart repository name"),
  			chartName: z.string().describe("The Helm chart name"),
  			version: z
  				.string()
  				.optional()
  				.describe("The chart version (optional, defaults to latest)"),
  		},
  		async ({ chartRepo, chartName, version }: ValuesParams) => {
  			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 values.yaml
  				const valuesYaml = await getChartValues(packageId, chartVersion);
  
  				return {
  					content: [
  						{
  							type: "text",
  							text: valuesYaml,
  						},
  					],
  				};
  			} catch (error) {
  				return {
  					content: [
  						{
  							type: "text",
  							text: `Error retrieving values.yaml: ${(error as Error).message}`,
  						},
  					],
  				};
  			}
  		}
  	);
  }