AI app for it and development · no coding needed
Legacy code explanation service
Explanations anchored to repository versions and maintainer validation.
Made for: Engineering leads maintaining inherited applications

What it does for you
The problem
Developers cannot confidently navigate undocumented code.
What it gives you
Architecture guide and code walkthroughs
What you give it
Authorized repositoriesexisting docsdeveloper interviews
How it works, step by step
- Map entry points
- Trace important flows
- Identify dependencies
- Draft architecture notes
- Cite source locations
- Collect maintainer corrections
What you see on screen
- Repository map
- code explanation
- documentation review
Build it yourself with your AI system
Build this app yourself, no coding needed
Start with a quick version you can try in a few minutes. Like it? Then build the full app by copying and pasting our step-by-step instructions: everything is prepared for you.
Sign in to see how to build it yourself
Build a quick version to try, or get the full app pack for Legacy code explanation service with the step-by-step building instructions. You don't need any technical skills: you copy, paste and answer a few questions. Both are included in the membership.
4 Have it built for you days to a few weeks
Rather not do it yourself, or want it fully tailored to your data, your way of working and your brand? Nexibeo builds Legacy code explanation service with you.
What's in the app pack
Included in the Complete AI Training membership.
- The building instructions your AI follows, step by step
- The questions your AI will ask you about your business before it starts
- A clickable demo you can open in your browser, to see how it should work
- A detailed blueprint of the screens, the information it keeps and the checks it runs
Become a member to get the app packAlready a member? Sign in
The files, for the technically curious
- START-HERE.mdHow to build it with your own AI (read first)3 KB
- README.mdOverview and links1 KB
- questions.mdQuestions to answer before you build2 KB
- prompt-cloudflare.mdThe full build prompt, hosted on Cloudflare24 KB
- prompt-vps.mdThe same build on your own server (Docker)24 KB
- spec.jsonData model, API, AI pipeline, acceptance criteria14 KB
- demo/index.htmlThe working demo on sample data201 KB
Questions
Do I need to know how to code?
No. You copy and paste the prompts on this page into ChatGPT or Claude, and the AI does the building. When it asks you something, you answer in your own words.
What does it cost?
The quick version, the app pack and the step-by-step instructions are for members: you pay the membership price, not a price per app (see the plans). Building the full app uses your own ChatGPT or Claude subscription. Putting it online is often cheap or no cost at the start, and your AI tells you before anything costs money.
How long does it take?
The quick version: about two minutes. The real app: an afternoon for a first version you can use, longer if you want every feature.
Can I change it to fit my business?
Yes. Tell your AI what to change in plain words, like “add a column for the price” or “use our logo and colours”. Or have Nexibeo build and customise it for you.
More detailsHow the AI works, safeguards and what to build first
For engineering leads maintaining inherited applications, turn authorized repositories, existing docs and developer interviews into architecture guide and code walkthroughs. Address the recurring problem: developers cannot confidently navigate undocumented code. The pilot measures maintainer acceptance and onboarding task time against the buyer's current method, before the larger build.
Scope one technical task, inspect authorized material, propose an implementation, build in a controlled environment, run relevant checks, obtain the required change approval, deliver with recovery instructions, and monitor the agreed operating scope. Start with authorized repositories, existing docs and developer interviews and finish with architecture guide and code walkthroughs.
How the AI works
Explain code or configuration, draft transformations and propose technical changes. Execute deterministic validation and meaningful tests. Engineers review correctness, access handling and failure behavior before deployment.
Safeguards
Protect secrets, customer data and source code. Use controlled environments, technical review and a recoverable deployment process. Validate source access and reviewer availability during the pilot. Maintain customer-level access, data deletion controls and a record of final approvals.
What to build first
Begin with engineering leads maintaining inherited applications and one recurring use case. Build the first two modules: map entry points; trace important flows. Provide operator assistance for the third module: identify dependencies. Deliver architecture guide and code walkthroughs through a manual review queue. Perform other necessary full-scope functions manually during the pilot. Include all applicable access, accuracy and professional-review controls from the start.
What it can connect to
Authorized repositories, technical documentation, application APIs and logs. Approved repositories, application APIs, execution platforms and monitoring systems. Validate current API access and behavior during discovery before promising compatibility. These are candidate integration categories, not verified supported connectors.
The screens in detail
Show a work backlog, proposed changes and verification results. Link each item to its source configuration, code or data mapping. Provide execution logs and an owner-facing health view. Keep environments and approval states clearly separated so a draft cannot be mistaken for a live change. In this product, the first view is repository map, followed by code explanation and documentation review.





