#dotnet

Fusion 16.5: The Gateway for Everyone

Built with C# and .NET, Fusion 16.5 is the only gateway supporting both federation standards, achieves 100% Apollo Federation compliance, and leads in real-world performance.

Introducing Federated Event Streams for Fusion 16.4

Federated Event Streams add broker-backed, resumable GraphQL subscriptions to Fusion 16.4, with stateless gateway scaling and client-owned resume cursors.

Newsletter May 2026

Hot Chocolate 16, Fusion 16, MCP, OpenAPI, Semantic Introspection, skillz, and more. Read the newsletter to learn about all the things we shipped in May and what comes next.

Introducing skillz: the .NET CLI for Agent Skills

skillz is a .NET CLI for installing, updating, and authoring Agent Skills, with dnx support for a one-shot workflow the way npx skills works in JavaScript.

What's new in Fusion 16

Fusion 16 is a GraphQL federation gateway built on ASP.NET Core, featuring Aspire-driven composition, incremental delivery, Semantic Introspection, OpenAPI adapters, and connectors for REST and gRPC.

What's new for Hot Chocolate 16

Hot Chocolate 16 brings a new type system, better scalar contracts, safer defaults, improved batching, semantic introspection, and a new GraphQL error mode.

Open Telemetry for All Your Services

What's new for Hot Chocolate 15

What's new for Hot Chocolate 14