Getting Started Covers all aspects of how to get started using LangChain to build an LLM application – including installation, environment setup, and a walkthrough of the main modules https://
langchain.readthedocs.io/en/latest/gett
ing_started/getting_started.html
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@langchain
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Getting Started with LangChain for LLM Application Development
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LangChain Core Modules: Prompts, LLMs, Chains, Agents
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Modules The main modules of functionality that make up LangChain, consisting of: – Prompt Templates
– LLMs
– Utilities (search, vector DBs, etc)
– Chains
– Agents
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LangChain Revamps Documentation with New Sections
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New Year, New Docs In an effort to make LangChain easier-to-use than ever before, we've revamped our docs. Sections include: Getting Started
Modules
[NEW] Use Cases
[NEW] Ecosystem
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LangChain Quickstart: Google Search Integration with Agents
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See these docs for a quickstart for this utility: https://
langchain.readthedocs.io/en/latest/exam
ples/chains/google_search.html
… But, probably more importantly, see these docs for a guide on how to load it as a tool that you can use with an agent: https://
langchain.readthedocs.io/en/latest/exam
ples/agents/search_tools.html
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SerpAPI Wrapper Comparison and Results Parsing Improvements
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It has different results than our SerpAPI wrapper, so it may not be a drop in replacement. In particular, I've noticed that its more verbose. But maybe that can be improved in parsing of the results? Big to @nickscamara_ for adding this!
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Google Custom Search API Free Tier Advantages Over SerpAPI
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The default search API that people seem to use (and the only one previously in LangChain) is SerpAPI One big limitation is that the free plan only supports *100 queries per month* But there is a Google Custom Search alternative that supports *100 queries per day* for free
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Google Custom Search cheaper alternative SerpAPI LangChain integration guide
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After the free plan, it's also a better deal. SerpAPI is $50 for 5k queries Google Custom Search is $5 for 1k queries, meaning for the same $50 you could get double the queries. So how do you use this cheaper search engine in LangChain?
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LangChain v0.0.53 Release: Google Search Integration
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LangChain v0.0.53 Doc fixes from @george_zhou Bug fix (highlighted by @yvesbalbas
) Also includes maybe the most requested feature to date… A google search alternative to SerpAPI (by @nickscamara_
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New max_iterations parameter to control agent iterations
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So glad you asked! there's now a max_iterations parameter you can use to cap the number of iterations an agent takes A bit brute force, but better than nothing
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LangChain Agents Max Iterations Parameter Implementation
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To expand on the last point, previously agents were allowed to potentially loop forever, whether caused maliciously or not Now you can specify a max_iterations parameter, which stops it after that many iterations https://
langchain.readthedocs.io/en/latest/exam
ples/agents/max_iterations.html
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