{
  "id": 13337461,
  "title": "REA Reverse – Engineer Anything",
  "url": "https://urgent.news/2026/10/10/rea-reverse-engineer-anything-13337461",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-10T00:37:07.000Z",
  "source": {
    "name": "Hacker News Best",
    "slug": "hacker-news-best",
    "url": "https://rea.tools/"
  },
  "original_language": "en",
  "account": "The REA tool provides programs with the capability to examine and explain their own code. To set up REA, install it and connect it to the agent using the command \"npx rea-agents@latest setup\". Verify the installation to ensure it's working correctly.\n\nBy inspecting the program's code, you can understand a feature in depth to explain it, modify it, or recreate it. For example, let's examine why a calculator displays 220 when adding 200 plus 10 percent. The agent reads the update function and speed settings, then applies that rule to create a new game with adjustable speed. Starting at 6, the speed increases by 0.001 each update, up to a maximum of 13.\n\nThrough REA, you can also examine other aspects of a program. For instance, you can inspect the HTTP browser edition of a website by connecting to it through a local debugging connection and retrieving the index.js file, including its source code and digest. This allows you to study the code and understand how the website functions.\n\nFurthermore, REA can help you reproduce functionality from existing code. You can recover the rules for mathematical operations like addition and multiplication, then build a small calculator that uses both. By providing the agent with the relevant code and prompts, it can generate the necessary logic.\n\nAdditionally, REA can be used to clone a website or reconstruct a game from its executable code. By inspecting the functions, strings, references, and call relationships within executables and libraries, you can map out modules, routes, IPC communication, and native dependencies. This allows you to understand the inner workings of the software and potentially modify or improve it.\n\nTo get started with REA, follow the provided steps to install and connect the agent to your program. Then, use the appropriate prompts and commands to inspect the code, understand its functionality, and build or modify features based on the insights gained. Whether you want to explain a specific behavior, recreate functionality, or dive deeper into the code, REA provides the tools to analyze and manipulate programs effectively.",
  "summary": "Article URL: https://rea.tools/ Comments URL: https://news.ycombinator.com/item?id=50028275 Points: 253 # Comments: 82",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Hacker News",
        "title": "REA Reverse – Engineer Anything",
        "url": "https://urgent.news/2026/10/10/rea-reverse-engineer-anything",
        "published": "2026-10-10T00:37:07.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}