London-based AI startup StackOne raised €17.6 million in a Series A funding round led by GV.The funding will be used to enhance StackOne's tool-calling LLM, invest in R&D, and expand integrations.Founded in 2023, StackOne offers an integration platform for SaaS vendors and AI Agent builders.The platform provides real-time bi-directional integrations ensuring data security.Integrations are crucial for B2B SaaS buyers, yet many firms take three weeks to launch a connection.StackOne aims to simplify integrations in an AI-first world, enabling faster and reliable connections.Developers spend weeks on enterprise APIs, but StackOne's AI agent automates this process.The platform offers 3,000+ actions on 200+ connectors, serving various sectors like HR and CRM.StackOne plans to be a key player in the €15.4 billion integration market, with notable customers worldwide.Workday Ventures lauded StackOne for deep integrations with complex systems and agent interoperability.