Harper

# Harper Harper is a single in-process runtime that unifies your database, application logic, APIs, caching, real-time messaging, and agent loops, replicated across a multi-region data application fabric. Because data sits in the same process as your code, Harper delivers roughly 1ms data retrieval, up to 85% fewer LLM and origin calls, and 30 to 70% faster page loads. Harper is built for developers and AI coding agents. You define a schema, and Harper automatically exposes REST and GraphQL APIs, vector search, blob storage, caching, and pub/sub over Server-Sent Events, WebSocket, and MQTT, all from one runtime with one deploy target. The same code runs on a laptop, in managed cloud, at the edge, and on-prem. ## Getting started - [Full Technical Documentation](https://docs.harperdb.io/llms.txt): Agent entry point for learning about the technical details of building with Harper. - [Install Harper](https://docs.harperdb.io/learn/getting-started/install-and-connect-harper): Install the runtime locally via npm, Docker, or a package manager. - [Quick Start](https://docs.harperdb.io/learn/getting-started/create-your-first-application): Stand up your first Harper application and hit a live API in minutes. - [create-harper](https://github.com/HarperFast/create-harper): One command scaffolds a Harper project with […truncated]