Show HN: ActionPrompt – A Rails Plugin for Managing Your LLM Prompts

github.com

2 pointsevtothedev1 comment

Hi Everyone! I've just extracted this from our code base.

As LLMs have become ubiquitous in web applications, I've noticed that prompts intended for Claude or GPT have become scattered throughout our codebase or buried within objects. Often, these prompts were built inline through string manipulation. My thinking was two-fold, 1) Let's come up with a simple pattern for organizing and rendering these prompts, and 2) Let's make them easy to review.

This draws heavy inspiration from ActionMailer::Preview.

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config.action_prompt.delivery_method = :chatgpt_api config.action_prompt.chatgpt_api_settings = { api_key: Rails.env[:OPENAI_API_KEY] } ... class ApplicationPrompt < ActionPrompt::Base before_action :set_user def set_user @user = current_user || AnonUser.new end end class SupportAgentPrompt < ApplicationPrompt def ask(question) @question = question.strip.downcase if result = prompt(question:) # renders `views/prompts/support_agent/ask.text.erb`, # ideally handles recognizing JSON and stripping out whitespace in response broadcast_append_to @user, target: :support_chat, partial: 'support_chat/message', locals: { message: result, from: SupportAgentUser.new } end end end ... SupportAgentPrompt.ask.prompt_later "What's the best menu item?"