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Custom LangChain Agent in JavaScript

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  • Delivery Time 1-3 Days
  • Response Time 2 Days
  • English Level Fluent

Description

Tired of rigid chatbots that break with every tweak?
This plug-and-play AI automation is your no-code Swiss Army knife β€” powered by LangChain, OpenAI, and custom JavaScript tools.

πŸ” How It Works

🧩 Custom LLM Chain – A self-coded LangChain node runs tailored prompts with OpenAI for deep, structured outputs
🧠 AI Agent Node – Dynamically routes queries through tools like Wikipedia using JavaScript-based tool functions
πŸ“₯ Manual Set Inputs – Use Set nodes to simulate real inputs for live testing and debugging
⚑ Custom JS Tools – Extend the agent with fetch() and LangChain-compatible JavaScript code β€” no servers needed
πŸ“š Plug & Play Architecture – Easily swap tools, models, memory modules, or APIs with LangChain’s abstraction

πŸ’Ό Why Use This Flow?

βœ… Modular AI Workflows – No more hardcoded scripts β€” swap prompts, tools, and inputs freely
🧠 LangChain-Powered Agents – Use chain-of-thought reasoning, memory, and multi-tool routing
πŸ’» Custom JavaScript Tools – Build and extend AI functions right inside your automation platform
πŸš€ Live Testing Friendly – Instantly simulate queries and debug tool outputs in real-time
πŸ” Reusable Architecture – Embed in any workflow (n8n, Make, LangChain Studio, etc.)

πŸ‘₯ Perfect For

βœ”οΈ Developers building flexible LLM apps
βœ”οΈ LangChain explorers testing toolchains
βœ”οΈ n8n power users crafting advanced agents
βœ”οΈ AI engineers prototyping agent logic
βœ”οΈ Hackathon builders & MVP creators

πŸ› οΈ Tech Stack

πŸ”— LangChain – Agent orchestration + tool abstraction
🧠 OpenAI Chat Models – Reasoning & response generation
πŸ’» JavaScript – Fully custom tools with browser-safe fetch()
βš™οΈ n8n / LangChain Studio – No-code orchestration and control

Want more?
βœ… A version formatted for your portfolio
βœ… A Notion card or LinkedIn post layout
βœ… An upgraded version using Google Gemini, Claude, or external APIs

Project Link -Β https://preview--peach-olive-agent.lovable.app/

About The Seller

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  • Member since:

    August 1, 2025
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Ref #: EX-10742

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