Mindstone Rebel: Your Company's AI Brain

London-based AI startup Mindstone has launched Rebel, a local-first, agentic AI operating system designed for enhanced customizability and data privacy. The system utilizes markdown files to store agent memory and instructions, offering a unique approach compared to developer-heavy frameworks.

Rebel's Fair Source license allows teams of up to 100 users to adopt and modify the system freely, with enterprise licenses available for larger organizations. This model aims to reduce vendor lock-in by keeping critical AI configurations accessible.

Key features include the ability to orchestrate multiple AI models, dynamically switching between local and cloud-based options based on task sensitivity and cost-efficiency. This ensures sensitive data remains on local infrastructure while leveraging powerful cloud models for complex tasks.

The platform offers reusable workflows, adaptable agent behaviors, and automated background tasks. An "Impact Dashboard" is available for Mindstone Pro users to track ROI and productivity gains without invasive employee monitoring.

Mindstone has secured $5 million in funding from investors including Pearson Ventures and Moonfire Ventures. The company previously operated in consumer education technology before pivoting to enterprise AI enablement.