You Don't Need LangChain — Build an AI Agent in 50 Lines of Python

I see this pattern everywhere: Developer wants to build an AI agent Developer installs LangChain (50+ dependencies) Developer spends 3 days reading LangChain docs Developer's simple agent is now 300 lines with 4 layers of abstraction Developer questions life choices Here's the thing: you can build an AI agent in 50 lines with zero frameworks. The 50-Line Agent import anthropic import requests from bs4 import BeautifulSoup client = anthropic . Anthropic () TOOLS = [ { " name " : " scrape_url " , " description " : " Get the text content of any web page " , " input_schema " : { " type " : " object " , " properties " : { " url " : { " type " : " string " }}, " required " : [ " url " ] } } ] def execute_tool ( name , args ): if name == " scrape_url " : r = requests . get ( args [ " url " ], headers = { " User-Agent " : " Mozilla/5.0 " }, timeout = 10 ) soup = BeautifulSoup ( r . text , " html.parser " ) return soup . get_text ( separator = " \n " , strip = True )[: 3000 ] return " Unknown t