StackOne

StackOne provides integration infrastructure that connects AI agents to enterprise software systems, enabling agents to execute real actions across business applications rather than just retrieve data. Its Connect layer offers more than 450 pre-built connectors with 30,000-plus actions across HR, recruiting, CRM, and finance tools, an AI Connector Builder for custom integrations, and support for MCP, A2A, REST APIs, and SDKs with managed authentication. Its Secure layer includes a Prompt Injection Guard claiming 89% detection accuracy, granular action/field/user-level permissions, and complete audit logging with SOC 2 Type II, GDPR, HIPAA, and CCPA compliance. Its Optimize layer provides Tool Discovery for efficient action selection and a Falcon Execution Engine claimed to save up to 80% of tokens on tool-heavy tasks. The Starter plan is free with 1,000 monthly credits per seat and all 450-plus connectors included, no credit card required; Team and Enterprise plans add connector builder access, A2A agents, premium security, and SAML SSO; OEM plans support embedding StackOne in other products.