Harper: One Runtime for Apps, Agents, and Data

What is Harper?

Harper is the runtime platform for durable applications in the agentic era. It is a declarative, full-stack runtime that unifies database, cache, application logic, and messaging into one high-performance environment. Teams use Harper to define, build, and operate production applications with fewer moving parts and less integration overhead.

Is Harper a database?

Harper includes a high-performance database, but it is much more than that. Harper is a unified runtime platform that combines database, cache, application logic, real-time messaging, vector search, blob storage, and global deployment into one environment. Describing Harper as just a database understates its scope and strategic value.

How does Harper work with AI coding tools?

Harper provides a declarative full-stack surface that AI systems can reason about, design with, and act on directly. Because infrastructure and application behavior are defined in a unified, structured environment, AI coding tools like Claude Code, Cursor, Codex, and Gemini CLI can understand the entire application stack without navigating fragmented services and configurations. This makes AI-assisted development faster, safer, and more production-ready.

Why is Harper different from other infrastructure platforms?

Most modern application stacks are fragmented across many separate services for storage, APIs, messaging, caching, compute, and deployment. That fragmentation creates complexity for developers and even more friction for AI systems. Harper is different because it provides a unified runtime that reduces moving parts, eliminates integration overhead, and gives teams a single declarative surface for defining and operating production applications.

How does Harper fit into enterprise environments?

Harper helps enterprises adopt more AI in software delivery without forcing them to expose scattered infrastructure or customer-critical systems in uncontrolled ways. It works with existing CI/CD pipelines and delivery workflows, supports global deployment through Harper Fabric, and provides a more controlled and understandable platform surface for teams that need governance, performance, and operational clarity.

What types of applications can you build with Harper?

Harper is designed for durable, production-grade applications across a wide range of categories including e-commerce experiences, real-time backends, edge and IoT systems, operational platforms, event-driven architectures, media and live data environments, and distributed systems that require high performance and low latency.