Townie

Townie is an AI-powered development assistant built on Val Town that uses Claude 4 Sonnet to read, edit, and deploy TypeScript applications through agentic tool-calling. It can autonomously make multiple read and write operations on project files, execute HTTP calls to test services, and iterate continuously based on the results. The tool supports multi-file projects with folders and branches, provides instant deployments with auto-scaling, and includes free custom subdomains. Built as part of the Val Town platform, Townie aims to make end-user programming accessible by creating a computational environment where everyone can shape their software. The platform emphasizes instant full-stack deployment with 100ms deploy times and works seamlessly on mobile devices for on-the-go development. Townie operates on a transparent pay-per-use credit system with a 50% markup on raw LLM costs, making it sustainable while providing clear pricing based on actual usage.