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if you didn’t know LangChain V1 launched last month, you’re officially late to the party, at least I was until I stumbled into it while upgrading a client’s system.
What I discovered completely changed the project. I had developed RAG agent with LangChain v0.3
The plan? Add document generation and agent behavior on top. Then I dug into V1.
The result?
Enabled intent-based tool use, real tools, short/long-term memory, stable multi-step reasoning, runtime model switching, and predictable actions.
What started as a "simple upgrade" turned into building something that actually felt intelligent.
The lesson? When a framework makes a leap this big, resistance is more expensive than rewriting.
I'll be sharing how I built the document generation tools and the lessons that saved me hours of debugging.
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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