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RAG with LangChain4j: ingestion and retrieval v1.0.0

Use this resource to build a RAG system in Java with LangChain4j, from ingestion to sourced answers

New

  • 521 downloads
  • 138 likes
  • 170 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install langchain4j-rag-document-qa

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent sets up RAG in Java with LangChain4j: ingestion of PDFs, text files or web pages, an embedding store, vector search, an AI service backed by retrieval, cited sources and multi-domain knowledge bases.

Mostly picked by

Updated November 2, 2026

Card for the “RAG with LangChain4j: ingestion and retrieval” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • SKILL.md: project setup, ingestion, retrieval and AI service
  • references/examples.md: document processing, multi-domain and hierarchical examples
  • references/references.md: API references

Good fit for

  • You want to chat with your PDFs in Java
  • Your assistant must cite sources from a knowledge base

Not for

    Tags

    • langchain4j
    • rag
    • documents
    • semantic search

    About

    You say

    “Create a Java assistant that answers from my internal PDFs and cites the pages.”

    Card for the “RAG with LangChain4j: ingestion and retrieval” skill

    Skill published by giuseppe-trisciuoglio under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to build a RAG system in Java with LangChain4j, from ingestion to sourced answers
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.6 KB
    • references/examples.md16.9 KB
    • references/references.md12.6 KB
    • SKILL.md13.1 KB

    Origin and licence

    Listed unmodified

    Author
    giuseppe-trisciuoglio
    Source
    github.com/giuseppe-trisciuoglio/developer-kit/tree/fe73fb33a09ee6562eeec7415a3f9a3bcf795177/plugins/developer-kit-java/skills/langchain4j-rag-implementation-patterns
    Licence
    MIT

    Notice

    « langchain4j-rag-implementation-patterns » (giuseppe-trisciuoglio, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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