wundergraph.com

# WunderGraph Cosmo - GraphQL Federation Platform

## About Cosmo

WunderGraph Cosmo is an open-source GraphQL Federation platform that serves as a drop-in replacement for Apollo GraphOS. Licensed under Apache 2.0, Cosmo provides full-lifecycle API management for federated GraphQL APIs without vendor lock-in.

### Key Features
- **Open Source**: 100% Apache 2.0 licensed with no vendor restrictions
- **High Performance**: Built in Go with 3.3x performance improvements via Dataloader 3.0
- **Federation Compatible**: Supports GraphQL Federation v1 & v2, works with any framework
- **Enterprise Ready**: SOC2 Type II compliant, OIDC/SSO integration, RBAC, audit logging
- **Full Observability**: Real-time analytics, distributed tracing, schema usage reporting
- **AI Integration**: MCP Gateway for AI model interaction with GraphQL APIs

### Core Components
- **Cosmo Router**: High-performance GraphQL gateway with authentication, subscriptions, and OpenTelemetry
- **WunderGraph Hub**: Collaborative schema design and governance for federated GraphQL APIs, with proposals, composition checks, and Fission
- **Schema Registry**: Version control, composition validation, breaking change detection
- **Cosmo Studio**: Web-based management interface with analytics dashboards
- **Analytics Platform**: Real-time metrics, tracing, and performance monitoring

### Deployment Options
- **Self-hosted**: Deploy on-premises or in air-gapped environments
- **Managed Service**: Cloud-hosted with enterprise support and SLAs
- **AWS Lambda**: Serverless deployment option

## Latest Blog Posts

### Understanding the N+1 Problem in GraphQL (and Why It’s Not Just GraphQL) (July 22, 2026)
The N+1 problem can turn one request into hundreds of backend calls. Learn why it shows up in GraphQL, how DataLoader fixes it, and when to use alternatives like joins or eager loading.
Author: Brendan Bondurant
Link: https://wundergraph.com/blog/graphql-n-plus-1-problem

### Why your LLM bill exploded overnight (and how to regain control) (July 7, 2026)
LLM bills spike overnight from retry storms, agent loops, and prompt bloat, not steady usage. Learn the guardrails: retry budgets, token caps, cost-aware routing, and unit-metric alerts, all enforced at one boundary.
Author: Brendan Bondurant
Link: https://wundergraph.com/blog/llm-cost-control

### Scaling Without Breaking Culture: Lessons from WunderGraph's Madrid Work Week 2026 (June 18, 2026)
Lessons from WunderGraph's 2026 Madrid Work Week: why we invest in in-person gatherings, and how we scale a remote team's culture without losing what makes it ours.
Author: Alexandra Stoica
Link: https://wundergraph.com/blog/scaling-culture-madrid-work-week-2026

### Safelist GraphQL Operations for AI Agents | Cosmo MCP Gateway (June 11, 2026)
Learn how to use the Cosmo Router MCP Gateway to expose federated GraphQL schemas to AI agents with reviewed, OAuth-scoped MCP tools.
Author: Ahmet Soormally
Link: https://wundergraph.com/blog/safelist-graphql-operations-for-ai-agents-cosmo-mcp

### Don't Let AI Agents Improvise Against Production GraphQL (June 9, 2026)
AI agents should explore your GraphQL schema in development and invoke only reviewed operations in production. Design in an open world, ship in a closed one — using the Cosmo Router MCP Gateway.
Author: Ahmet Soormally
Link: https://wundergraph.com/blog/governing-ai-agent-access-to-graphql-mcp-gateway

### RAG Cost Control for AI Agents: How to Prevent AI Spend Drifts (May 11, 2026)
RAG and agentic costs drift when retrieval, tools, API calls, and routing lack a shared control layer. Learn how to measure, audit, and reduce spend with API orchestration—without rebuilding from scratch.
Author: Brendan Bondurant
Link: https://wundergraph.com/blog/rag-cost-optimization

### Where Does API Complexity Live? (April 28, 2026)
Compare REST, GraphQL, and federation by where the complexity actually lives — data fetching, caching, security, contracts, and governance.
Author: Ahmet Soormally
Link: https://wundergraph.com/blog/rest-vs-graphql-vs-federation-complexity

### The Three Bottlenecks AI Can't Code Away (April 23, 2026)
AI writes 42% of code, but engineering teams aren't shipping faster. The bottleneck moved to coordination, governance, and review. Here's how GraphQL Federation fixes all three.
Author: Jens Neuse
Link: https://wundergraph.com/blog/ai-coding-bottlenecks

### Per-Tool OAuth Scopes for MCP, Derived from Your Schema (April 17, 2026)
Enforce per-tool OAuth scopes on MCP servers using your GraphQL schema. AI agents get least-privilege access with automatic scope step-up — no BFF needed.
Author: Ahmet Soormally
Link: https://wundergraph.com/blog/mcp-per-tool-oauth-scopes-graphql-schema

### GraphQL vs REST: 18 Claims Fact-Checked with Primary Sources (2026) (April 14, 2026)
We fact-checked 18 claims comparing GraphQL and REST against peer-reviewed research, official docs, and security reports. Only 3 held up. Here's what the evidence actually says.
Author: Jens Neuse
Link: https://wundergraph.com/blog/fact-checking-graphql-vs-rest

## Latest Podcast Episodes (The Good Thing)

### How to Make Your APIs Work for AI (February 2, 2026)
Erik Wilde discusses why many enterprise APIs are not AI ready, why so many AI projects fail prematurely, and why API design and governance matter more than models for building reliable AI-driven systems.
Guest: Erik Wilde · Hosts: Stefan Avram, Jens Neuse
Link: https://wundergraph.com/the-good-thing/32-erik-wilde

### The Man Behind HubSpot's AI Integrations & MCP (November 21, 2025)
HubSpot’s Cody Holden joins Stefan to talk about his journey from journalism to product management, why communication is still the hardest problem in tech, and how MCP is redefining integration for the AI era.
Guest: Cody Holden · Hosts: Stefan Avram
Link: https://wundergraph.com/the-good-thing/cody-holden-ep31

### Why WunderGraph Is All In on Federation (October 15, 2025)
In this episode, Stefan and Jens respond to industry rumors head-on — clarifying that WunderGraph isn’t moving away from federation, but doubling down on it. They discuss community reactions, open-source innovation, and what it really means to evolve the federation ecosystem.
Hosts: Stefan Avram, Jens Neuse
Link: https://wundergraph.com/the-good-thing/why-wundergraph-is-all-in-on-graphql-federation-ep30

### Scaling Support Without Burning Out Engineers (September 20, 2025)
Stefan and Jens talk with Viola Marku, WunderGraph’s first Customer Success Manager, about scaling support in startups, building customer empathy into the product, and improving developer experience.
Hosts: Stefan Avram, Jens Neuse
Link: https://wundergraph.com/the-good-thing/customer-success-viola-marku-ep29

### APIs Are a People Problem with Daniel Kocot (September 5, 2025)
Daniel Kocot joins The Good Thing to discuss why APIs are less about technology and more about people, touching on REST vs. GraphQL debates, capability thinking, governance gaps, and the hype cycles around AI and MCP.
Guest: Daniel Kocot · Hosts: Jens Neuse, Stefan Avram
Link: https://wundergraph.com/the-good-thing/building-great-apis-daniel-kocot-ep28

## Latest On-Demand Webinars

### Meet WunderGraph Hub: GraphQL Federation's Missing Layer (April 9, 2026)
Why do schema changes take weeks? How do you know who is in charge of which field? Watch to explore what's slowing schema evolution, and how teams can design and govern their graph more effectively.
Duration: 37 min
Link: https://wundergraph.com/events/virtual/meet-wundergraph-hub-apr26

### Benjie Gillam on WunderGraph Hub, Grafast, and the Future of GraphQL (March 20, 2026)
GraphQL Technical Steering Committee member and creator of Grafast Benjie Gillam shares his honest thoughts on Fission and WunderGraph Hub. Recorded at API Days Paris.
Duration: 10 min
Link: https://wundergraph.com/events/virtual/benjie-interview

### Introducing Fission: A New Way to Design Federated APIs (January 22, 2026)
Bridge the gap between monoliths and microservices and simplify GraphQL Federation with visual tooling, ownership, and schema checks.
Duration: 23 min
Link: https://wundergraph.com/events/virtual/introducing-fission

## Contact & Resources

- Website: https://wundergraph.com
- Documentation: https://cosmo-docs.wundergraph.com
- GitHub: https://github.com/wundergraph/cosmo
- Discord Community: Join for support and discussions
- Blog: https://wundergraph.com/blog
- Podcast (The Good Thing): https://wundergraph.com/the-good-thing
- Events & Webinars: https://wundergraph.com/events

## Use Cases

Perfect for platform engineering teams, enterprises requiring compliance, microservices architectures using GraphQL Federation, and organizations wanting to avoid vendor lock-in while maintaining enterprise-grade features.