dotnet add package LambdaSharp.CustomResource --version
NuGet\Install-Package LambdaSharp.CustomResource -Version
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="LambdaSharp.CustomResource" Version="" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add LambdaSharp.CustomResource --version
#r "nuget: LambdaSharp.CustomResource,"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install LambdaSharp.CustomResource as a Cake Addin
#addin nuget:?package=LambdaSharp.CustomResource&version=

// Install LambdaSharp.CustomResource as a Cake Tool
#tool nuget:?package=LambdaSharp.CustomResource&version=


This package contains interfaces and classes used for building Lambda functions on AWS to manage custom resources in CloudFormation. This package extends the functionality provided the LambdaSharp package.

Visit LambdaSharp.NET to learn more about building serverless .NET solutions on AWS.

ALambdaCustomResourceFunction<TProperties, TAttributes>

The ALambdaCustomResourceFunction<TProperties, TAttributes> base class implements the CloudFormation protocol for custom resources. The TProperties type parameter defines the properties for initializing the custom resource. The TAttributes type parameter defines the attributes of the created resource that can be accessed by CloudFormation.

public sealed class Function : ALambdaCustomResourceFunction<ResourceProperties, ResourceAttributes> {

    //--- Constructors ---
    public Function() : base(new LambdaSharp.Serialization.LambdaSystemTextJsonSerializer()) { }

    //--- Methods ---
    public override async Task InitializeAsync(LambdaConfig config) {

        // TO-DO: add function initialization and reading configuration settings

    public override async Task<Response<ResourceAttributes>> ProcessCreateResourceAsync(Request<ResourceProperties> request, CancellationToken cancellationToken) {

        // TO-DO: create custom resource using resource properties from request

        return new Response<ResourceAttributes> {

            // TO-DO: assign a physical resource ID for custom resource
            PhysicalResourceId = "MyResource:123",

            // TO-DO: set response attributes
            Attributes = new ResourceAttributes { }

    public override async Task<Response<ResourceAttributes>> ProcessDeleteResourceAsync(Request<ResourceProperties> request, CancellationToken cancellationToken) {

        // TO-DO: delete custom resource identified by PhysicalResourceId in request

        return new Response<ResourceAttributes>();

    public override async Task<Response<ResourceAttributes>> ProcessUpdateResourceAsync(Request<ResourceProperties> request, CancellationToken cancellationToken) {

        // TO-DO: update custom resource using resource properties from request

        return new Response<ResourceAttributes> {

            // TO-DO: optionally assign a new physical resource ID to trigger deletion of the previous custom resource
            PhysicalResourceId = "MyResource:123",

            // TO-DO: set response attributes
            Attributes = new ResourceAttributes { }


Copyright (c) 2018-2022 LambdaSharp (λ#)

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Product Compatible and additional computed target framework versions.
.NET net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

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Serverless .NET for AWS - Module Finalizer Library

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Serverless .NET on AWS - λ# is a CLI and Framework for Rapid Application Development using .NET on AWS
Version Downloads Last updated 277 4/18/2023
0.8.4 9,836 3/10/2022 638 3/4/2022 416 7/15/2021 398 7/15/2021 413 6/17/2021
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0.8.2 6,063 2/16/2021