Build a Documentation RAG Bot for Your Codebase (2026)

Canonical URL: Republished from munonye.com. Full code on GitHub.

Build a documentation RAG bot for your team — capstone of AI Developer Tutorials. Combines M8-A RAG and M7-B Angular chat.

Project structure

docs-bot-api/     Spring Boot — ingest, vector store, /api/ask
docs-bot-ui/      Angular 19 — chat + citation panel
/data/repo/       Cloned project to index

Citation in responses

Return chunk metadata with answers:

public record AnswerResponse(String answer, List<Citation> sources) {}
public record Citation(String file, int chunkIndex) {}

Display citations in Angular with links to GitHub line numbers.

GitHub: munonye-ai-chat-spring-angular

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Full tutorial: Build a Documentation RAG Bot for Your Codebase (2026)

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