Show HN: Promptv (local first prompt & .env management) (github.com)

A new command-line tool called Promptv has been introduced to streamline the management of AI prompts locally and includes version control features. Sponsored by DLS and LABs21, this pre-release version allows users to create, update, retrieve, list, and delete prompts while supporting Markdown formatting and variable substitution through Jinja2 templates. Notable functionalities include full version history tracking, Git-style diff visualization, project-based organization, and enriched cost estimation for LLM API calls. This tool is significant for the AI/ML community as it facilitates better organization and security of prompts and API keys, allowing developers to manage their interactions with various LLM providers (like OpenAI and Anthropic) more efficiently. Promptv automatically sets up a structured local environment, enabling users to customize API base URLs and pricing data, significantly enhancing development workflows for machine learning projects. The ability to manage secrets securely and export them in various formats further strengthens its usability in professional contexts, positioning Promptv as a vital asset for AI developers.