GraphQL Day@ FOST Amsterdam
hosted at
Tolhuistuin, Amsterdam
About
GraphQL Day is a one-day community event hosted at FOST (Future of Software Technologies, think federation of conferences!).
It is an opportunity to connect with other API ecosystems, meet new and seasoned GraphQL users, educate about GraphQL, share best practices, and have fun!
The event is open to everyone — whether you run GraphQL in production or are evaluating it for your next project.
AMSTERDAMJUNE 2026GRAPHQL DAYFOSTCOMMUNITYAPIsAMSTERDAMJUNE 2026GRAPHQL DAYFOSTCOMMUNITYAPIs
OPEN SOURCEWORKSHOPSFEDERATIONDEVELOPER EXPERIENCEGRAPHQL DAYAMSTERDAMOPEN SOURCEWORKSHOPSFEDERATIONDEVELOPER EXPERIENCEGRAPHQL DAYAMSTERDAM
Why attend GraphQL Day?
Real-World Talks
Hear how teams actually use GraphQL — what worked, what didn't, and what they'd do differently.
Cross-Community
FOST brings together GraphQL, AsyncAPI, OpenAPI, and JSON Schema communities. Learn across boundaries.
Open Source
Meet library maintainers and core contributors. Ask questions, report bugs, discuss roadmaps.
Workshops
Hands-on sessions to try new tools and techniques with guidance from the people who build them.
Networking
A focused single-day format means everyone's in the same room. Easy to meet people.
Free for Speakers
All speakers get a free conference ticket. Submit a talk and share what you've learned.
Schedule
All times in Amsterdam Time (CEST, UTC+2)
18 things "everyone knows" about GraphQL vs REST
Zonzij
GraphQLREST
Living in the GraphQL bubble for the last few years, I've watched the ecosystem grow up in a way that's hard to appreciate from the outside. The spec, the tooling, the vendors, the federation story, all visibly stronger than just two years ago. GraphQL was never bad, It was misunderstood, overhyped and overused. Fast forward to today, the dust has settled. Enterprises are on the slope of enlightenment, yet the people who pick the query language still have to handle pushback: ""GraphQL breaks caching!,"" ""it has the N+1 problem,"" ""OpenAPI is much simpler."" Almost all of that pushback is grounded in views that were already outdated when first written down.
Fragments worth sharing
Zonzij
GraphQL
GraphQLConf is just over and so many things happened! There's too much good stuff to keep to ourselves.
Teaching LLMs to Understand GraphQL with Schema-Aware Embeddings
Zonzij
GraphQLMCPAI Agents
As AI assistants and MCP-style tools increasingly sit in front of GraphQL APIs, embeddings have become critical for fuzzy schema search, field retrieval, and natural-language-to-query systems. Yet most teams rely on general-purpose embedding models that were not specifically designed to understand GraphQL type systems, relationships, or naming patterns.
Thore Koritzius
Software Engineer
Thore Koritzius
Software Engineer
GraphQL with AWS AppSync - Building a Product API at HEMA
Zonzij
GraphQL
GraphQL Mocking at Scale
Zonzij
GraphQLFederationMocking
With thousands of developers acting as both consumers and producers on the Graph, friction is inevitable, often stifling development velocity. At Booking.com, we addressed this challenge by leveraging mocks throughout every stage of the software development lifecycle, from ideation to production. By building solutions that facilitate these stages, we successfully decoupled frontend and backend workflows, empowering teams to move at their own pace.
Closing the Loop: How GraphQL Gives Coding Agents Eyes on What Actually Matters
Zonzij
AI AgentsSchema EvolutionObservability
Coding agents are reshaping how we build software. Implementing features, refactoring systems, and shipping changes at a pace unthinkable 6 months ago. But to be successful with agents you need the right feedback loop. One that guides your agent to success, not into the spiral of death.
Event Partners
GraphQL Day is organized by the community for the community and hosted at FOST (Future of Software Technologies).
Gallery
Photos from GraphQL Day Paris 2025.
Stay tuned
Join us for a day of GraphQL talks, networking, and hands-on learning at FOST Amsterdam.
AMSTERDAMJUNE 2026GRAPHQL DAYFOSTCOMMUNITYAPIsAMSTERDAMJUNE 2026GRAPHQL DAYFOSTCOMMUNITYAPIs
OPEN SOURCEWORKSHOPSFEDERATIONDEVELOPER EXPERIENCEGRAPHQL DAYAMSTERDAMOPEN SOURCEWORKSHOPSFEDERATIONDEVELOPER EXPERIENCEGRAPHQL DAYAMSTERDAM