REA is an open-source tool that lets an AI agent watch an existing app, work out how it behaves, and then write a version of its own that actually runs. For a coach or a wellness practitioner, that changes one thing: the tool you have been wishing for no longer has to exist on the market before it can exist in your practice.
What exactly is REA?
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REA, short for Reverse Engineer Anything, is an MCP server and a command-line tool that hands a coding agent the instruments of reverse engineering. Released in April 2026 under an open-source licence by a developer who goes by morluto, it hit GitHub's trending lists in early October. As of 23 October 2026, the repository has passed 370,000 stars, which puts it among the most followed projects of the moment.
The idea comes down to three moves. You point your agent at a target: a website, a desktop app, an Android app, a compiled file. REA analyses it and hands back evidence: the screens, the routes, the data moving around, the logic tying it together. The agent uses that evidence to explain how the app behaves, or to write a fresh version and test it. The analysis runs on your own machine, so nothing is sent anywhere beyond what you choose to share with your AI provider.
It installs with a single command and plugs into the most widely used coding agents, including Claude Code and Codex. It is built for developers first. But what it makes possible matters to anyone who needs a tool made to measure.
Is copying an app legal?
REA's own documentation answers it: the tool is meant for research, education, interoperability and software preservation. Cracked copies, stolen keys and bypassing a licence are ruled out in plain words.
The line is easy to remember. How an app works, its flow and its logic, is not yours, but it is not anyone's either: you are free to take inspiration from it. A vendor's code, design and brand, on the other hand, belong to them. Rebuilding an app means recreating what it does with new code, never taking over its identity. When in doubt, read the original tool's terms of use before going further.
Why does it matter for your practice?
Look at the tools you use today. An online calendar for bookings, a form for first contact, a spreadsheet to keep track of clients, an email tool for follow-ups. Each one does almost what you want, and none of them talk to each other. You spend your evenings copying information from one to the next.
Until now, building your own tool meant months of development and a budget out of reach for a practice that is just starting. With an agent that can study what already exists, the picture changes: you can start from a tool that almost does the job, understand how it does it, and rebuild only the part you actually need.
In practice, that can mean a client record that keeps the history of every session, a space where your client finds her exercises and her next dates, or a recap sent automatically after each appointment. A coaching practice no longer has to buy its internal tools off the shelf: they can be rebuilt from what already works.
Skills, the other trend of the month
REA itself installs as a "skill". A skill is a bundle of instructions an AI agent loads when the task calls for it: a way of working, a trade's know-how, a checklist. This month, the most followed skill repositories are obra/superpowers, a working method for coding agents, Anthropic's official anthropics/skills repository, and interface design skills that teach the agent to lay out screens properly.
The idea behind the names matters more than the names: the agent no longer turns up empty-handed, it turns up with the know-how of a trade. The same approach can carry the way your practice welcomes a new client, prepares a session or follows up with someone who is hesitating. That is what turns a general-purpose assistant into a tool that works the way you do.
What AI does not replace
An agent copies a mechanism, not judgement. It does not know what truly serves your client, what should stay a human conversation, or where the sensitive information sits. Session notes from a life coach or a wellness practitioner often touch on health and private matters: where they are stored, who can see them and how long they are kept should be decided before the first line of code is written.
That is exactly what BIZZY CONSULTING does. We start from the tools that already exist, keep what works, drop what gets in the way, and build your practice's website, CRM or internal tool, under your name and on your terms. To see what we could build for you: explore the website, CRM and AI tools offer.
