StackOne, a London, UK-based company offering AI-powered solutions for SaaS and AI agent integrations, has raised $20 million in Series A funding.
Investors
The round was led by GV (Google Ventures), with participation from Workday Ventures, XTX Ventures, Episode 1, Playfair, and angel investors from OpenAI, DeepMind, Microsoft, and Mulesoft.
Founded in 2009, GV is Alphabet's venture capital arm based in San Francisco, focusing on enterprise, life sciences, consumer, and frontier technology sectors. With offices in Cambridge, London, and New York, GV manages over $10 billion in assets and supports 400 active portfolio companies across North America and Europe.
StackOne Use of Funds
The company will use the funding to advance its tool-calling LLM, invest in R&D, and expand the number of integrations and the depth of actions available within the platform.
About StackOne
Founded by Romain Sestier and Guillaume Lebedel, StackOne is an AI-powered platform designed to simplify and enhance SaaS and AI agent integrations for enterprises. By combining a proprietary AI agent with a real-time engine, StackOne enables teams to quickly connect AI agents and SaaS tools to enterprise tech stacks, providing access to over 3,000 actions across 200+ tools. Featuring robust security and privacy, StackOne supports building, testing, shipping, and monitoring integrations. StackOne serves global companies like Drata, Attensi, and Localyze.
Funding Details
Company: StackOne Technologies Ltd.
Raised: $20.0M
Round: Series A
Funding Date: May 2025
Lead Investor: GV (Google Ventures)
Additional Investors: Workday Ventures, XTX Ventures, Episode 1, Playfair, angel investors from OpenAI, DeepMind, Microsoft, Mulesoft
Company Website: https://stackone.com/
Software Category: AI-powered SaaS Integrations
Source: stackone.com/press-releases/stackone-raises-20m-series-a-led-by-gv-google-ventures-to-reinvent-saas-and-ai-agent-integrations