Build a Legal Tool One Small Step at a Time
Start a proof-of-concept brief checker without trying to design the entire app in one prompt.
You will understand what this build-along creates, what Part 1 covers, and why small verified steps are the core vibe-coding skill.
What you are building
This course follows a real build-along for creating a proof-of-concept brief checker with Descrybe Legal Engine. The finished idea is a tool that can work with legal sources while helping a user inspect cases and, in later parts, check a brief.
Part 1 builds the foundation. You will start with an empty project, connect the app to Descrybe, run a concept search, and add a way to retrieve details for a selected case.
That is already enough to begin experimenting with your own legal-tool ideas. You do not need to wait until the full brief checker is finished.
What vibe coding means here
Vibe coding does not mean asking an AI agent for a complete production app and trusting whatever appears. In this course, it means describing the next useful behavior in plain English, trying what the agent builds, and using what you observe to guide the next change.
The working loop is simple: build one small piece, run it, inspect the result, fix what is wrong, and repeat. The agent can write and explain code, but you remain responsible for deciding what the tool should do and whether it actually works.
- 1Choose one small behavior.
- 2Ask the coding agent to build or change it.
- 3Read the agent’s summary and questions.
- 4Run the app and test the behavior yourself.
- 5Give the agent the result or exact error.
- 6Repeat until that piece works.
Keep the first prototype low-risk
Use public, hypothetical, or fully redacted material while learning. A proof of concept is not a production legal system, and a successful demo is not proof that an app is secure, complete, or ready for client information.
Before a legal tool handles real users or confidential material, it needs a separate review of authentication, per-user access, data storage, logging, security, error handling, testing, and the professional rules that apply to the people using it.
- Do not paste client secrets, privileged communications, or private files into an unapproved coding tool.
- Do not treat generated legal summaries as verified merely because the app can retrieve them.
- Do not share one person’s Descrybe connection among multiple app users.
- Keep a human close to every legal conclusion, citation, quote, and source-selection decision.
What you need
- An AI coding agent such as Codex, Claude Code, Cursor, or a comparable tool.
- A new or otherwise safe project folder.
- A Descrybe account with Legal Engine access for the hands-on connection steps.
- A browser and terminal for running the generated app.
- A willingness to ask the agent to explain anything that is unfamiliar.