DSPy.rb

Build LLM apps like you build software. Type-safe, modular, testable.

DSPy.rb brings software engineering best practices to LLM development. Instead of tweaking prompts, define what you want with Ruby types and let DSPy handle the rest.

Overview

DSPy.rb is a Ruby framework for building language model applications with programmatic prompts. It provides:

• Type-safe signatures — Define inputs/outputs with Sorbet types
• Modular components — Compose and reuse LLM logic
• Automatic optimization — Use data to improve prompts, not guesswork
• Production-ready — Built-in observability, testing, and error handling

Core Concepts

1. Signatures