What is StackOne?
StackOne offers a comprehensive integration infrastructure designed to connect AI agents with a vast array of SaaS systems. Through hundreds of pre-built connectors spanning critical business functions such as Sales, ERP, Support, and Messaging, StackOne empowers AI agents to operate across enterprise software. Its AI-first integration engine manages complex tasks including authentication, rate limiting, multi-tenancy, and real-time data transformations. The platform supports multiple connection protocols like MCP, A2A, AI SDKs, and Rest API, while incorporating built-in prompt injection defense and permissions governance, ensuring secure and efficient AI agent operations within enterprise environments.
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 Playfair Capital, Portfolio Ventures, and Episode 1 Ventures
Series A (2025): $20M led by Workday Ventures, XTX, Playfair, and Episode 1 Ventures
Key Investors in StackOne
Playfair Capital
Playfair Capital is a London-based venture capital firm specializing in pre-seed investments, known for its selective approach and commitment to building strong foundations for growth in early-stage technology companies.
Portfolio Ventures
Portfolio Ventures is an investment firm that has demonstrated significant involvement in funding rounds, acting as a key resource for companies seeking capital and providing access to a quality investor pool.
Episode 1 Ventures
Episode 1 Ventures is a UK-focused venture capital firm that invests in software-driven businesses with high growth potential, typically providing initial institutional investment to companies with early customer traction.
What's next for StackOne?
The recent major strategic investment in StackOne signals a pivotal growth phase for the company, likely enabling accelerated product development, expansion of its connector library, and a broader market reach. This capital infusion is expected to bolster StackOne's position as a key enabler of AI agent adoption within large enterprises, facilitating deeper integration and automation across diverse software ecosystems. The company's focus on handling complex integration challenges positions it to capitalize on the increasing demand for sophisticated AI-driven business solutions.
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