Priompt

Priompt is a JSX-based prompting library: it manages Large Language Model (LLM) context windows using a priority system to ensure critical data is included.

Developed by Anysphere, Priompt is a prompt design library, inspired by web frameworks like React, that uses JSX components for structuring LLM prompts. Its core mechanism is a priority system: it assigns absolute (`p`) or relative (`prel`) values to prompt elements, ensuring the most critical information—like the `SystemMessage` or recent conversation history—is included within the model's finite token limit. This approach standardizes prompt construction, reducing context window overflow and improving output consistency across complex, multi-turn interactions.

https://github.com/anysphere/priompt