Echostash SDK

Echostash SDK

The Echostash SDK provides a fluent API for fetching prompts and converting them to any LLM provider format. Available for JavaScript and Python.

Installation

npm install @goreal-ai/echostash

Quick Start

import { Echostash } from "@goreal-ai/echostash"

const es = new Echostash({ apiKey: process.env.ECHOSTASH_API_KEY })

// Fetch → set variables → convert to OpenAI format
const messages = await es
  .prompt("welcome-email")
  .vars({ name: "Alice", tier: "pro" })
  .openai()

Fluent API Chain

The SDK uses a chainable pattern: prompt() → vars() → provider()

• .prompt(id) — Fetch a prompt by slug or ID
• .vars({...}) — Set template variables for rendering
• .openai() — Convert to OpenAI chat messages format
• .anthropic() — Convert to Anthropic messages format
• .google() — Convert to Google Gemini format
• .vercelAi() — Convert to Vercel AI SDK format
• .langchain() — Convert to LangChain messages format

Extract Model Config

// Get model settings stored with the prompt
const loaded = await es.prompt("welcome-email").vars({ name: "Alice" })
const config = loaded.config()
// { model: "gpt-4o", temperature: 0.7, maxTokens: 1024 }