Mast policy and product changes now go live in as little as 15 minutes.

Mast is the origination infrastructure banks and lenders run on. Headless, API-first, and built so AI agents can execute from application to completion inside your lending policies. Most lending systems are built on old foundations. We rebuilt origination from first principles, so every application is a sequence of verifiable, auditable steps; every decision is policy-bound and explainable; and every action, human or agent, is logged and attributable. The platform is modular. Mast Origin for orchestration, Policy Engine for policy-as-code across credit, affordability and compliance, Product Engine to design and version lending products, Case Copilot for underwriting and operations, Mast Assist for intermediary policy questions, plus broker and customer portals, embeddable affordability calculators, and a full SDK if you want to build your own front end. Our mission is to make lending simpler, faster and smoother for everyone. ISO 27001 certified, Cyber Essentials Plus, with 24/7 infrastructure monitoring. Winner, Best Mortgage Technology at the 2026 MoneyAge Awards. Shortlisted for LendTech of the Year at the UK Fintech Awards in 2025 and 2026. Start with a conversation, not a procurement process. hello@usemast.com

Founded 2020