Correct way to add resources

[VladyslavLishchyna]

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• I have searched existing discussions and documentation for answers

Question Category

• Protocol Specification
• SDK Usage
• Server Implementation
• General Implementation
• Documentation
• Other

Your Question

Hi Community!

I have my little project via MCP .NET Server and its works well, I read about "Resources" in MCP and understand that I need it but I don`t find any examples or documentation about adding it in С# SDK. Maybe you have some or can show some example ?

[altinoren]

Hey @VladyslavLishchyna,
EverythingServer sample has list and view resource code examples. Is that what you're looking for?

csharp-sdk/samples/EverythingServer/Program.cs

Lines 41 to 116 in bac97ef

	.WithListResourcesHandler(async (ctx, ct) =>
	{
	return new ListResourcesResult
	{
	Resources =
	[
	new ModelContextProtocol.Protocol.Types.Resource { Name = "Direct Text Resource", Description = "A direct text resource", MimeType = "text/plain", Uri = "test://direct/text/resource" },
	]
	};
	})
	.WithListResourceTemplatesHandler(async (ctx, ct) =>
	{
	return new ListResourceTemplatesResult
	{
	ResourceTemplates =
	[
	new ResourceTemplate { Name = "Template Resource", Description = "A template resource with a numeric ID", UriTemplate = "test://template/resource/{id}" }
	]
	};
	})
	.WithReadResourceHandler(async (ctx, ct) =>
	{
	var uri = ctx.Params?.Uri;
	if (uri == "test://direct/text/resource")
	{
	return new ReadResourceResult
	{
	Contents = [new TextResourceContents
	{
	Text = "This is a direct resource",
	MimeType = "text/plain",
	Uri = uri,
	}]
	};
	}
	if (uri is null || !uri.StartsWith("test://template/resource/"))
	{
	throw new NotSupportedException($"Unknown resource: {uri}");
	}
	int index = int.Parse(uri["test://template/resource/".Length..]) - 1;
	if (index < 0 || index >= ResourceGenerator.Resources.Count)
	{
	throw new NotSupportedException($"Unknown resource: {uri}");
	}
	var resource = ResourceGenerator.Resources[index];
	if (resource.MimeType == "text/plain")
	{
	return new ReadResourceResult
	{
	Contents = [new TextResourceContents
	{
	Text = resource.Description!,
	MimeType = resource.MimeType,
	Uri = resource.Uri,
	}]
	};
	}
	else
	{
	return new ReadResourceResult
	{
	Contents = [new BlobResourceContents
	{
	Blob = resource.Description!,
	MimeType = resource.MimeType,
	Uri = resource.Uri,
	}]
	};
	}
	})

[VladyslavLishchyna]

Thanks, Yeah its looks like that I need, But I thought there are some attribute for resources or some abstract class, but if its working - perfect