OpenAPI
→ OpenAPI Specification and API Design Standards
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FOST Amsterdam
As the European AI Act moves from policy to enforcement, the private and public sector faces a unique challenge: How do we leverage the transformative power of Generative AI without sacrificing data sovereignty, transparency, or citizen trust?
Amsterdam has always been a hub for "Digital Commons." In 2026, we explore how APIs serve as the regulatory and functional bridge—turning "Black Box" AI into accountable, machine-readable government services.
1,000+
Participants
400+
Companies
100+
Sessions
100+
Speakers
Your FOST ticket unlocks more than just the main event. Enjoy access to exclusive partner events happening at the same time.
On the Schedule
(Detailed schedule coming soon)
From hands-on workshops to real-world case studies, explore the full agenda, featuring a wide range of topics, including API monetization, security, AI-driven automation, and emerging technology trends.
Be a part of real learning, real connections, and real-world value.
Level up your skills
Go beyond the basics—dig into API design, security, management, and real implementation challenges.
Learn from people who've done it
Explore real case studies, practical lessons, and unfiltered insights from teams building and scaling APIs.
Boost your credibility
Complete curated learning tracks and earn certifications that show you know your stuff.
Build the right network
Meet API leaders, builders, and thinkers shaping the future, across industries and regions.
See what’s next before it hits
AI, LLM APIs, sustainability, platform governance—get ahead of the curve with what’s coming in the API space.
2026 Selected Sponsors
Gold Sponsors
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In a world powered by APIs, Postman is the leading API collaboration platform, eliminating the pain of disconnected tools by unifying the entire API workflow in one place. Unlike traditional solutions, Postman streamlines design, testing, and documentation on a single platform, enabling seamless collaboration from creation to deployment. By replacing fragmented workflows with a secure, integrated experience, Postman accelerates development and ensures reliable APIs in today’s AI-first era. www.postman.com
Google Cloud Apigee is a comprehensive API management platform enabling organizations to design, secure, deploy, and scale APIs with confidence. It simplifies connecting applications, data, and services, accelerating digital transformation and unlocking new revenue streams. Leverage Apigee to power innovation, enhance developer experiences, and build robust, secure digital ecosystems essential for today's interconnected world and GenAI initiatives.
Silver Sponsors
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Sopht is an Environmental Services company that allows organizations to pilot their environmental impact and automate their decarbonation. Sopht provides a lever for optimizing and rationalizing the challenges of an IT department.
Greenpixie is the leading provider of usage-based sustainability data for hyperscaler cloud users (AWS, Azure, GCP). We measure our customer’s cloud emissions, helping you to use cloud sustainability as a lever for your business goals.
Bronze & Community
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Open source tools to easily build and maintain your event-driven architecture. All powered by the AsyncAPI specification, the industry standard for defining asynchronous APIs.
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GraphQL is an open‑source query language for APIs and a server‑side runtime. It provides a strongly‑typed schema to define relationships between data, making APIs more flexible and predictable.
From data to training, we provide the solutions you need to make your IT sustainable. https://resilio-solutions.com/en
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The Green Web Foundation tracks and promotes green energy use in the internet industry. It offers tools, services, training, and advocacy to help websites, hosting providers, and users reduce their digital carbon footprint.
How to get involved
Want to be part of the conversation? Here’s how:
Speak at FOST
Share your insights on APIs, AI, and digital transformation.
Apply to speak
Sponsor the event
Connect with decision-makers shaping the API economy.
Sponsorship info
Attend & network
Gain insights, build partnerships, and level up your API strategy.
Get your ticket
Past conference highlights
Siham Essodaigui
Head of Applied AI
Nat Sakimura is a well-known identity and privacy standardization architect and the Chairman of the Board of the OpenID Foundation. Besides being an author of such widely used standards as JWT (RFC7519), JWS (RFC7515), OAuth PKCE (RFC7636) and OpenID Connect, he helps communities to organize themselves to realize the ideas around identity and privacy. His current projects include FAPI, ISO/IEC 29184 Online privacy notice and consent, ISO/IEC 27551 Unlinkable Attribute-based entity authentication, OAuth JAR, RAR, and mTLS.
