StackOne raises $20m Series A Led by GV (Google Ventures) to reinvent SaaS and AI agent integrations
Summary
London, 2025: StackOne the next-gen, AI-powered platform fuelling the future of enterprise AI agents and SaaS integrations has raised $20 million in a Series A round led by GV (Google Ventures). Workday Ventures, XTX Ventures, existing investors Episode 1 and Playfair, and angels from OpenAI, Deepmind, Microsoft and Mulesoft also participated.The funding, which takes the total raised by StackOne to $24 million, will be used to continue building StackOnes state-of-the-art tool-calling LLM, invest in R&D, and further expand the number of integrations and depth of actions available in the StackOne platform.Software platforms live or die by how well they integrate with other tools whether its an AI recruitment agent sourcing candidates in Workday; a SaaS security platform raising a ticket on ServiceNow; or an AI HR agent automating onboarding. It automatically builds use-cases on top of even the most complex APIs, connecting AI and SaaS tools to their customers entire tech stack in a fraction of the time, and with higher accuracy than even the most precise, leading LLMs.Through the platform, product teams get access to 3,000+ actions on 200+ connectors instantly, from HR to CRM, ticketing, messaging, and IAM. This shared experience has shaped a culture of innovation, collaboration and deep care for the product were building and it shows.Guillaume Lebedel, co-founder and CTO, StackOne said: Integrations are now table stakes for winning and keeping customers in B2B SaaS, especially for the ever-growing swathe of AI agents. Theyre creating infrastructure that modern software and the entire AI agent ecosystem can rely on.The depth of secure integrations, the pace of delivery, and the teams foresight into AIs future uniquely position StackOne to redefine this categoryBarbry McGann, Managing Director and SVP at Workday Ventures: Weve been impressed by how quickly and deeply StackOne integrates with complex enterprise systems and now, with their focus on agent-to-agent interoperability, theyre unlocking even more powerful use cases for customers.