WunderGraph – open-source API Developer Toolkit
Dear HN Community. We're Bjorn, Dustin, Stefan & Jens, the founders of WunderGraph. More than two years ago, Jens started WunderGraph as a Side Project. The initial idea was to solve the problem of integrating multiple disparate DataSources into a single, unified API Layer. While solving this problem, Jens realized that his mental model of APIs was wrong. Most API tools treat APIs as abstract things or just endpoints, in a very imperative way. At some point, he realized that there's a better model to think about APIs: APIs are dependencies and we should treat them in a declarative way! And…
WunderGraph – open-source API Developer Toolkit launched on June 6, 2022 with 63 votes, #687 of 3,005 launches that month and more than 90% of that year's launches.
In plain words
WunderGraph is an open-source toolkit that integrates multiple data sources into a unified API layer. Designed for developers, it treats APIs as dependencies that can be imported and exported declaratively, similar to package managers. The toolkit generates static, conflict-free artifacts, enabling developers to manage APIs with version control and standardized workflows across projects.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Dear HN Community. We're Bjorn, Dustin, Stefan & Jens, the founders of WunderGraph. More than two years ago, Jens started WunderGraph as a Side Project. The initial idea was to solve the problem of integrating multiple disparate DataSources into a single, unified API Layer. While solving this problem, Jens realized…
Does a similar job
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WunderGraph – Back end for Front end Framework2023 · github.com · ▲19
WunderGraph – The simplicity of RPC with the power of GraphQL2023 · wundergraph.com · ▲32Build and run your supergraph with governance and no lock-in. WunderGraph Cosmo is the open-source, enterprise-ready platform for teams scaling from the first subgraph to thousands of daily operations.
WunderGraph - the GraphQL BFF to Aggregate APIs + OIDC Auth + Caching2020 · wundergraph.com · ▲12Build and run your supergraph with governance and no lock-in. WunderGraph Cosmo is the open-source, enterprise-ready platform for teams scaling from the first subgraph to thousands of daily operations.
- WAWunderGraph – Aggregate REST and GraphQL APIs, Add AuthN/Z and Caching2020 · ▲9
Hey, I'm Jens, founder of WunderGraph. Over the years of working with REST & GraphQL APIs, I found that some aspects of using it are way too complicated. Here's a list of problems I believe could be abstracted away: - Aggregating multiple GraphQL, REST, etc. APIs into a simple to use API (Backend for Frontend) without writing code - adding Authentication & Authorization to APIs you don't have full control over - adding efficient and easy to use Caching to GraphQL APIs without writing code - adding persisted queries for security and performance reasons without making my application code and…
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