The first autogenerated SDK with gRPC and REST

TL;DR: We built the world’s first generated, idiomatic gRPC and REST SDK. If you have public gRPC and REST endpoints, Fern is the SDK provider for you. Schedule a call to learn more!

We’re excited to announce that Fern has launched gRPC and REST in the same SDK. Fern partnered with Pinecone to deliver a best-in-class C# SDK, so that they could better support the .NET community. Pinecone’s official C# SDK is now used and integrated into Microsoft’s Semantic Kernel, which allows developers to interface with a variety of popular vector databases using a common set of abstractions. The SDK supports gRPC for all of Pinecone’s data plane, and traditional REST for the control plane.

Until now, Fern has been laser-focused on consumer-facing REST SDKs. The vast majority of the world is built on REST APIs, but anyone who developed a REST API knows that there aren’t any real standards, and it’s hard to get right. However, with the right developer tooling, we believe that REST APIs can provide the ideal developer experience. So far this approach has proven successful - companies like Cohere, ElevenLabs, Merge, and Webflow use Fern to power their developer platform, and are reaching more developers than ever before.

REST is Fern’s primary focus, but we recognize that companies may need to lean into more performance sensitive technology to fulfill their customers’ needs. Enter gRPC and Protobuf — a battle-tested pair of technology originally open-sourced by Google. gRPC is based on Google's internal RPC framework, Stubby, and many of the world's largest companies, including Uber, Square, Spotify, and Netflix use gRPC and Protobuf in their systems in order to keep up with user demand.

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