What is StackOne?
StackOne operates as a critical integration infrastructure provider designed specifically for the burgeoning AI agent market. The platform functions as a universal connector, enabling AI agents to interface with hundreds of SaaS systems, including ERP, CRM, messaging, and document management platforms. By abstracting the complexities of authentication, rate limiting, and multi-tenancy, StackOne allows developers to focus on agent logic rather than integration maintenance.
The company's AI-first integration engine is engineered to handle real-time data transformations and supports multiple protocols such as MCP, A2A, and REST APIs. Furthermore, StackOne addresses the growing enterprise demand for security by embedding prompt injection defense and granular permissions governance directly into its infrastructure. This comprehensive suite of tools positions StackOne as an essential utility for organizations looking to deploy intelligent automation at scale without compromising on security or operational integrity.
How much funding has StackOne raised?
StackOne has raised a total of $23.6M across 2 funding rounds:
Angel/Seed
$3.6M
Series A
$20M
Angel/Seed (2024): $3.6M with participation from Portfolio Ventures, Playfair Capital, and Episode 1 Ventures
Series A (2025): $20M led by Workday Ventures, Playfair, XTX, and Episode 1 Ventures
Key Investors in StackOne
Workday Ventures
Workday Ventures is a strategic venture capital fund that accelerates innovation by connecting early-stage enterprise technology companies with the broader Workday ecosystem and customer base.
Playfair Capital
Playfair Capital is a London-based firm specializing in pre-seed and seed investments, known for its high graduation rate and commitment to building global category leaders.
Episode 1 Ventures
Episode 1 Ventures focuses on high-growth software businesses in the UK, providing early-stage institutional backing to companies aiming to disrupt large-scale markets.
What's next for StackOne?
With the recent infusion of capital, StackOne is set to prioritize the expansion of its connector library and the enhancement of its governance features. The strategic roadmap focuses on deepening integration capabilities across high-demand enterprise verticals, ensuring that AI agents can execute complex workflows with greater autonomy and precision. As the market for autonomous agents matures, StackOne's focus on robust, secure, and scalable infrastructure will likely serve as a primary catalyst for its continued adoption among enterprise-level clients.
The company is expected to leverage this funding to scale its engineering and go-to-market teams, further cementing its position as a category leader in the AI-integration space. By maintaining a focus on interoperability and security, StackOne is well-positioned to navigate the evolving landscape of enterprise software, providing the necessary plumbing for the next generation of intelligent business applications.
