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Attribute-Driven API Definitions

Define your entire API surface using simple C# attributes. Lambda routes, inputs, outputs, and errors stay clean, discoverable, and strongly typed.

Automatic OpenAPI Generation

Your OpenAPI (OAS 3.x) file is generated at build-time — no manual YAML, no drift, and no runtime cost.

AoT-Compatible Runtime

Fully Native AOT-safe. Zero reflection and zero runtime scanning make your Lambda functions cold-start fast.

First-Class AWS Lambda Support

Designed around AWS Lambda Annotations and the Lambda programming model. Your existing handlers become complete OpenAPI operations instantly.

New

Multi-Lambda Deployment Automation

BuildMultiple Lambda Annotations projects

GenerateMultiple Generated OpenAPI Specs

MergeCLI Merge Tooling

DeployConsolidated OpenAPI Spec

OpenAPI Consolidation

S3 Cloud-Based Merge Coming Soon

Attribute-Driven API Definition

Define your Lambda endpoints with simple attributes

[LambdaFunction]
[HttpApi(LambdaHttpMethod.Get, "/products/{id}")]
[OpenApiOperation(Summary = "Get product by ID")]
[OpenApiTag("Products")]
public async Task<Product> GetProduct(string id)
{
    return await _repository.GetByIdAsync(id);
}