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LangChain.js-LLM-Template

IroncladDev/LangChain.js-LLM-Template

LangChain LLM template to train custom AI models

GitHub

GraphCanon updated 1w · GitHub synced 1w

330 stars49 forksLast push 3y JavaScript

Decision brief

LangChain.js-LLM-Template is a JavaScript-based tool for training custom AI language models that stands out with its straightforward setup and vector store utilization.

Good fit when

When you prefer using JavaScript to develop your model training pipeline.
For projects where markdown files can effectively capture the data needed for your model's training set.

Avoid when

If you require a platform that supports multiple languages beyond JavaScript for flexibility.
In cases where complex preprocessing of train data cannot be easily managed through markdown files.

Requirements:: Requires OpenAI API access for LLM training purposes via an API key.; Setup requires running yarn or npm commands for installation and training processes.

Observed Jul 11, 2026 · Source: enrich:decision_facts

LangChain.js-LLM-Template alternatives Trust report

Verify the decision

Adoption

Package downloads where a registry match exists. GitHub stars (330) are secondary evidence.

npm downloads (30d): 14,357·npm downloads API·1w

Maintenance and security

Full trust report

Maintenance: Archived (1231d since push); As of 1w
Provenance: Not a fork · Personal account; As of 1w
Security (OSV): No lockfile; As of 1mo

Public GitHub metadata and optional OSV scans. Signals, not a guarantee. Trust methodology.

Install

npm install LangChain.js-LLM-Template

npm

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Evidence and technical details

Sourced facts, taxonomy, compatibility claims, README excerpt, and machine-readable endpoints.

Overview

This repository provides a template for training your own custom Language Model using LangChain, primarily in JavaScript.

Capability facts

MCP server: No MCP server detected
Source: repo_scan · Aug 15, 2026
Languages: javascript
Source: github.language+package.json · Aug 15, 2026

Compatibility

Sourced claims from the README excerpt - not unsourced marketing copy.

LangChain integrationLangChain

Source: README excerpt (regex_v1, Aug 15, 2026)

# LangChain.js LLM Template

Source link

OpenAI APIOpenAI API

Source: README excerpt (regex_v1, Aug 15, 2026)

2. Add your OpenAI API key in environment vars via the kay `OPENAI_API_KEY`.

Source link

README

LangChain.js LLM Template

This is a LangChain LLM template that allows you to train your own custom AI model on any data you want.

Setup

Provide all the information you want your LLM to be trained on in the training directory in markdown files. Folder depth doesn't matter.
Add your OpenAI API key in environment vars via the kay OPENAI_API_KEY.
Run yarn train or npm train to set up your vector store.
Modify the base prompt in lib/basePrompt.js
Run index.js, and start playing around with it!

Source code: https://github.com/Conner1115/LangChain.js-LLM-Template

For agents

This page has a .md twin and JSON over the API.

/tools/ironcladdev-langchain-js-llm-template.md GET /api/graphcanon/tools/ironcladdev-langchain-js-llm-template GET /api/graphcanon/graph?tool=ironcladdev-langchain-js-llm-template