Extensible Filesystem Based Prompt Workflow System

via “dotprompt file-based prompt management and versioning”

Open-source framework for building AI-powered apps in JavaScript, Go, and Python, built and used in production by Google

Unique: Introduces a dedicated .prompt file format that separates prompt definition from code, enabling non-engineers to modify prompts and version control them in Git. Prompts are compiled into Flow-like objects with input/output schema validation, and can be tested via CLI without code changes. Supports templating and multi-turn conversations in a declarative format.

vs others: More structured than raw prompt strings in code and simpler than full prompt management platforms (Promptly, Langsmith); enables Git-based versioning and CLI testing without external services.