qataruts/monlite

monlite is a database and backend toolkit for TypeScript projects, especially ones building AI agents, that packs everything into a single file on disk. Instead of running a separate database server, it uses SQLite under the hood while offering an API that feels like MongoDB, with the developer experience of a tool like Prisma. There is no server to start, no configuration file to write, and no database migrations to manage. You point it at a file and it works, and the same code can later run against a networked Postgres database if a project outgrows a single file. The project's main pitch is that an AI agent, a retrieval pipeline, or a background worker usually needs several separate pieces: a document store for memory, semantic vector search, a job queue, and simple locks to avoid duplicate work. Normally that means running four different services together with a tool like Docker Compose. monlite bundles all of that into optional add-on packages that sit on top of the same single file: full text search, vector similarity search for semantic memory, a durable job queue with retries and deduplication, a key-value cache with locks, a cron-style scheduler for recurring jobs, and a realtime layer for pushing live updates to clients. Data is organized into typed collections queried with a familiar Mongo or Prisma style syntax, supporting filtering, grouped aggregation, atomic updates, and multi-step transactions. A live query feature lets an application subscribe to a collection and get notified only when something relevant actually changes, similar to how Firebase's realtime database works. A small companion tool called monlite studio opens a local web interface for browsing the data inside a database file without writing any code. This project is aimed at developers building agents, command-line tools, or small to medium applications who want to avoid setting up multiple backend services during early development. It is released under the MIT license, so it can be reused freely, including for commercial projects, as long as the copyright notice is preserved.