WunderGraph Launches Cosmo Connect to Bring the Supergraph to Every API — No GraphQL Rewrite Required

WunderGraph, the world’s most widely adopted open-source GraphQL Federation solution, today unveiled Cosmo Connect, a new framework that allows companies to bring together every API and data source into a single unified API. Cosmo Connect works with REST, SOAP, gRPC, and more to extend Cosmo’s capabilities beyond GraphQL-only services. This lets teams modernize and unify APIs without rewriting them in GraphQL, making adoption faster and less disruptive.

API Management Problems: Fragmented APIs and Lost Data

GraphQL Federation enables clear domain boundaries, democratized data access, and a unified view of information across an organization. However, implementing it across all teams can be challenging when different groups use different protocols such as REST, gRPC, SOAP, or GraphQL. This diversity often leads to a fragmented landscape of APIs, workflows, and data.

To collaborate effectively, teams need a way to bridge GraphQL and non-GraphQL APIs without requiring backend teams to change their tools. By treating federation as a meta-layer, organizations can connect diverse API approaches while preserving each team’s autonomy. This is the challenge Cosmo Connect is designed to address.

“Cosmo Connect overcomes many of the limitations that have held back current federated architectures from enterprise adoption. I believe that federated APIs with gRPC subgraphs is the next evolution of GraphQL Federation,” said Curtis Layne, Senior Staff Software Engineer at a Fortune 500 company

WunderGraph’s Solution: One Unified Platform for Every API

Cosmo Connect removes these barriers with a plugin-based approach that leverages gRPC and other protocols to integrate existing APIs directly into the supergraph. Teams retain the benefits of governance, analytics, unified APIs, and data composition without replatforming. Tailored for AI-assisted tools such as Cursor, Cosmo Connect makes plugin development faster and enables autonomous integration.

Key features of Cosmo Connect include:

• Protocol-Agnostic Federation: Federate REST, SOAP, gRPC, and other APIs without GraphQL rewrites.
  
• Flexible Plugin Support: Run plugins inside the router for easy deployment or as separate services for team and infrastructure scalability.
  
• Performance and Type Safety: Leverage a gRPC-first architecture for faster, safer API federation and the flexibility to write services in any supported language.
  
• Optimized for AI-Assisted Code Generation: Concise contracts and type-safe code make plugins highly interpretable for LLMs, enabling accurate, efficient generation…

“There is no AI without APIs,” said Jens Neuse, Co-founder and CEO at WunderGraph. “Cosmo Connect gives companies a single unified platform across services and protocols, freeing developers to focus on building rather than integrating.”

The launch of Cosmo Connect comes at a pivotal moment as enterprises increasingly adopt LLM-driven development and seek solutions that de-risk complex transitions, such as monolith decompositions and moves toward microservices. Cosmo Connect is integrated within WunderGraph Cosmo and will soon feature deep integration with WunderGraph Hub, enabling collaborative API design and modeling. Wundergraph is trusted by thousands of developers, including those at eBay, Soundtrack Your Brand, On The Beach, and SoundCloud.

To learn more about Cosmo Connect, sign up for the company’s webinar on August 26th or explore the tool at https://www.wundergraph.com/connect

About WunderGraph

WunderGraph Cosmo is the world’s most widely adopted open-source GraphQL federation platform, used by many of the largest consumer platforms. Trusted by eBay, Soundtrack Your Brand, On The Beach, and SoundCloud, WunderGraph provides full lifecycle API management without vendor lock-in. With flexible on-premise or managed service deployment, WunderGraph helps engineering teams scale seamlessly and efficiently. WunderGraph is backed by Karma Ventures, eBay Ventures, and Aspenwood Ventures. The company is actively hiring for several roles; learn more at www.wundergraph.com.

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