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StackOne

StackOne

StackOne is the integration infrastructure for AI agents to act. 200+ connectors, 10k+ actions, and the AI builder tools to customize or build your own. StackOne turns AI agents into powerhouse that can act like your and for you. At the core is Falcon, our state-of-the-art, code-first, execution engine. Falcon executes multi-step AI actions accurately, reliably, and securely, optimizing for tool-calling accuracy, token efficiency, and low latency. Falcon interfaces with your agent via MCP, A2A, or API calls for traditional apps RPCs and any app interface (REST, SOAP, GraphQL, Private APIs, browserless). StackOne’s managed infrastructure handles multi-tenant authentication, permissions, and observability out of the box—so teams can focus on designing agency, not building the plumbing. We’re built for enterprise trust: SOC2, GDPR, HIPAA, and CCPA compliant. Real-time execution with no data storage. Ship faster. Execute better. Scale with confidence. StackOne is the platform for productio…

San Francisco, California, United States11-50 employeesFounded 2023
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Overview

StackOne is an integration platform that connects various SaaS products through unified APIs and AI Agent Actions. It offers a comprehensive suite of tools that enables sales teams to access and utilize information from multiple sources efficiently. The platform supports over 200 integrations, facilitating seamless connectivity for applications such as ATS, CRM, and HRIS. By streamlining data access, StackOne enhances the productivity of sales development representatives, allowing them to focus on their core activities. The platform's design prioritizes user experience, making it easy for teams to manage integrations and workflows effectively.

Tech Stack

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Funding History

Seed Round

$3.6M

Mar 2024

Charlie Songhurst, Serge Chiaramonte, Portfolio Ventures +2

Series A

$20.0M

May 2025

Playfair Capital, XTX Ventures, Workday Ventures +2