Pre-release

Type-safe prompt engineering for production AI

Define prompts with a fluent builder. Let AI generate optimized system prompts. Ship with confidence.

$ npm i @nudge/core @nudge/cli

Your code

import { prompt } from "@nudge/core";

export const summarizer = prompt("summarizer", (p) =>
  p
    .persona("expert summarizer")
    .input("text to summarize")
    .output("concise summary")
    .do("preserve key facts")
    .dont("add opinions")
    .constraint("max 3 paragraphs")
);

import { prompt } from "@nudge/core";export const summarizer = prompt("summarizer", (p) =>  p    .persona("expert summarizer")    .input("text to summarize")    .output("concise summary")    .do("preserve key facts")    .dont("add opinions")    .constraint("max 3 paragraphs"));

Generated prompt

You are an expert summarizer. Your task is to 
condense information while maintaining accuracy 
and clarity.

**Input:** You will receive text to summarize.

**Output:** Provide a concise summary.

**Guidelines:**
- Preserve key facts and important details
- Avoid adding personal opinions or interpretations
- Keep your response to a maximum of 3 paragraphs

You are an expert summarizer. Your task is to condense information while maintaining accuracy and clarity.**Input:** You will receive text to summarize.**Output:** Provide a concise summary.**Guidelines:**- Preserve key facts and important details- Avoid adding personal opinions or interpretations- Keep your response to a maximum of 3 paragraphs

How it works

Define

Write prompts in TypeScript with full autocomplete

Generate

AI synthesizes optimized system prompts

Ship

Import and use anywhere in your app

Features

Type-Safe

Full TypeScript support with autocomplete

AI-Powered

Generates optimized system prompts

Cached

Only regenerates changed prompts

Composable

Share logic across prompts

Variables

Dynamic prompts with typed placeholders

Optional Blocks

Toggle sections at runtime