helm-chart-values

Retrieve the values.yaml configuration file for a specific Helm chart from Artifact Hub to customize deployments.

Instructions

Get the values.yaml file for a specific Helm chart from Artifact Hub

Input Schema

TableJSON Schema

Name	Required	Description
`chartRepo`	Yes	The Helm chart repository name
`chartName`	Yes	The Helm chart name
`version`	No	The chart version (optional, defaults to latest)

Implementation Reference

src/tools/values.ts:19-52 (handler)

Handler function that fetches the Helm chart's values.yaml from Artifact Hub by first getting chart info, determining version, retrieving values, and returning as text content or error message.

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:11-18 (schema)

Zod input schema defining parameters: chartRepo (string), chartName (string), version (optional string).

{
	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)"),
},

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

Function that registers the 'helm-chart-values' tool with the MCP server, specifying name, description, input schema, and handler.

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}`,
						},
					],
				};
			}
		}
	);
}

src/index.ts:18-18 (registration)
Invokes registerValuesTool to add the tool to the main MCP server instance.
```
registerValuesTool(server);
```

ArtifactHub MCP Server