The Complete
GraphQL Federation Stack
Build supergraphs from any API across teams.
Ship fast with governance and control.
Cosmo at the core. Hub in control.
Together, Cosmo and Hub allow you to fully leverage the power of Federation.
Hub
Visually design schemas on a collaborative canvas, propose changes with built-in governance, and align teams before a single line is implemented.
Learn MoreCosmo
The open-source federation runtime. Route queries through a high-performance gateway, manage schemas in the registry, and monitor everything with built-in analytics.
Learn MoreFederation scaled your backend.
Now it evolves how your teams work together.
Federation is the right choice. Each team owns a service. The router exposes them as a single supergraph. Clients get one API. Backend teams get independence.
But Federation didn't come with a coordination layer - until now. Imagine Frontend developers know which subgraph owns what or who to ask. Backend teams start designing from the consumer's perspective, not the service requirements. Schema changes happen in governed workflows, not in Slack. This is Hub.
Hub brings governance and collaboration to Federation
Speed up building your federated graph with one seamless workflow.
Start with the canvas
Collaborate with API owners and consumers. Find alignment quickly on use-cases and requirements before moving into implementation.
Propose changes
Create a schema proposal automatically from your defined capabilities. Collect structured feedback from all stakeholders.
Build the right thing
With the changes approved and documented, you can ship fast without breaking things.
Cosmo is the open-source standard for GraphQL Federation
Build your supergraph by connecting any API. Ship with confidence at scale.
Cosmo Streams
Connect your federated graph to event streams like Kafka, NATS, or Redis. The router listens for events and updates subscriptions automatically, keeping backends stateless, efficient, and easy to operate at scale.
DocsCosmo Connect
Let teams keep their existing backends and languages. Connect maps GraphQL schema fields to backend gRPC services, so the router handles the translation and delivers one unified API to the frontend.
DocsMCP Gateway
Bring Federation workflows into your IDE. MCP connects Cosmo to tools like Cursor, Windsurf, and VSCode, allowing you to explore schemas, propose changes, and validate configurations instantly. No CLI or context switching needed.
DocsModern APIs are multi-protocol.
Cosmo unifies them.
GraphQL, REST, gRPC, Kafka — your stack speaks many languages. Cosmo composes them into a single, federated supergraph so every client gets one endpoint and every team keeps their preferred protocol.
Enterprise-grade tooling at your fingertips
Cosmo handles routing, registry, observability, and automated policy enforcement — so your graph runs fast, validated, and visible.
8x
better P99 latency and more requests per second than Apollo Router
Deliver raw performance with the Cosmo Router
- Native High-Performance Query Execution Planner written in Go.
- Dataloader 3.0, enabling ahead of time batch optimizations through its breadth-first execution strategy.
- AST-JSON based result merging for maximum performance and minimal memory of the Resolver.
- Single-Flight for Query Execution Planning and data-fetching to avoid duplicate work and reduce latency.
- Cache Warmer to precompute and cache query plans to handle high throughput surges. See it in action at the Super Bowl.
Lower is better
Higher is better
Trusted by engineering teams worldwide
$178K30%5x10x2x1 Day
10 Days3x“With Cosmo, we saved an estimated $178,000 just on building those features. That doesn't even include the cost of maintaining or supporting them long term.”
Karol Krogulec
Senior Engineering Manager, Acoustic
$178K
Saved
“Our infrastructure costs went from $14,000 with our previous provider down to $9,750 with Cosmo, even with some extra infra costs.”
Tim Caplis
Principal Software Engineer, SoundCloud
30%
Lower Costs
“We have experienced significant performance enhancements for our most complex queries since switching from Apollo to Cosmo. The query planning in Cosmo is more advanced and intelligently optimized.”
Fredrik Wärnsberg
Vice President of Engineering, Soundtrack Your Brand
5x
Faster Queries
“Now, Cosmo presents all the relevant stats—how many queries run, their response times, and key performance metrics—making it much easier to communicate what's happening under the hood. This improved observability not only enhances request tracing but also helps teams understand how their queries run in a federated system. Ultimately, Cosmo has made it much easier for teams to buy into Federation.”
Stephen Wootten
Senior Software Engineer, On The Beach
10x
Better Observability
“Cosmo's Advanced Request Tracing is instrumental to further optimize our subgraphs and enhance query performance for our customers. We're impressed with their swift response times and ease of communication.”
Jack
Head of platform, Tailor
2x
Faster Delivery
“A solution that is scalable and PCI compliant. Migrating to cosmo is super intuitive and took just a day to reconfigure everything.”
Tyler Hawkins
Backend Architect, Travelpass Group
1 Day
Migration
“We learned about WunderGraph Cosmo and deployed it into production in about ten days. I highly recommend WunderGraph Cosmo; they helped us pivot quickly when we needed a solution ASAP! Everything now is working perfectly.”
José Rose
Senior Developer, PemPem
10 Days
To Production
“We are switching to NATS since there is a huge need for asynchronous patterns and event sourcing. GraphQL subscriptions was a must for this. Implementation of EDFS was easy. When we are talking on our discord, they are there and they know what they are talking about. It really is a pleasure to work with WunderGraph.”
Vincent Vermersch
CTO, Monkey Factory
3x
Dev Velocity
Launch Now
Deploy your federated graph in minutes. No credit card required.
Product
Resources
Related Projects
Legal
HIPAA Compliant© 2026 WunderGraph, Inc. All rights reserved.