About Attesso B.V.

Attesso is a Dutch fintech company building the authorization layer for AI-powered commerce. Founded by Douwe Kramer and Sid van Kalken, we make it safe for airlines, hotels, and ticket vendors to accept payments from AI agents without ever exposing credit card numbers.

As AI agents start to book travel, buy tickets, and manage expenses on behalf of people and businesses, the payment infrastructure designed for humans breaks down. Sending card numbers to bots is insecure. Manual approval is too slow for dynamic pricing. And regulators are raising questions about who actually authorized each transaction.

Attesso solves this by giving businesses a drop-in authorization layer. Your customers set spending rules and approve once with Face ID or Touch ID. AI agents transact within those limits. Every payment is cryptographically signed, giving you a verifiable audit trail and full compliance.

Our mission

We believe AI agents will become the primary way people book travel and buy tickets. Our mission is to make those transactions as safe and verifiable as payments made by humans, without slowing anything down.

The company

Attesso B.V. is registered in the Netherlands under Chamber of Commerce number 42040136. We work with banks, payment processors, and AI platforms to bring agentic payments to the industries that need them most.