Projects
Libraries
A Vitest utility for integration tests with Neon Postgres.
Each test file runs against its own isolated PostgreSQL database (Neon branch), ensuring clean, parallel, and reproducible testing of code that interacts with a database. Because it uses a real, isolated clone of your production database, you can test code logic that depends on database features, such as transaction rollbacks, unique constraints, and more.
Testing against a clone of your production database lets you verify functionality that mocks cannot.
by Mikael Lirbank
A lightweight, persisted in-memory database built from the ground up for the browser. PimDB delivers fast and efficient text indexing with substring, n-gram, and sorted indexes, enabling quick lookups for both partial and exact matches. On a dataset of 100,000 documents, it’s currently 4,000x+ faster than Array.filter for sorted lookups and 700x+ faster for substring searches.
by Mikael Lirbank
Templates
Research
Expert System is an observable, ambient reasoning system that turns the world’s unstructured information into a coherent, queryable and compounding knowledge corpus.
Research agents operate continuously—reading, compressing, and cross-linking primary sources to discover new insights and patterns grounded in source provenance. These agents also have direct access to public financial, market, and macroeconomic data, enabling quantitative validation and synthesis between narrative signals and hard data. The result is a feed of research briefs revealing connections, second-order effects, and hypotheses that emerge only at machine scale.
by Spencer Smith
Apps
The first humanless bookkeeper. AI-first accounting without humans behind the scenes.
Built from the ground up as an AI-first, humanless bookkeeper that handles financial business accounting without human intervention. Powered by OpenAI APIs and custom data pipelines, Heartbeats employs a next-gen AI-driven user interface with voice input and voice+screen output.
by Mikael Lirbank & Spencer Smith
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