Hikugen's main features:

- Automatically generates, runs, regenerates and caches the LLM-generated extraction code.

- It uses sqlite to save the current working code for each page so it can be reused across executions.

- It uses OpenRouter (https://openrouter.ai/) to call the LLM.

- It can fetch the page automatically (it can even reuse Netscape-formatted cookies) but you can also just feed it the raw HTML and leverage the rest of its functionalities.

Here's a snippet of what it looks like:

  from hikugen import HikuExtractor
  from pydantic import BaseModel
  from typing import List
  
  class Article(BaseModel):
      title: str
      author: str
      published_date: str
      content: str
  
  class ArticlePage(BaseModel):
      articles: List[Article]
  
  extractor = HikuExtractor(api_key="your-openrouter-api-key")
  
  result = extractor.extract(
      url="https://example.com/articles",
      schema=ArticlePage
  )
  
  for a in result.articles:
      print(a.title, a.author)

A good chunk of this was built with Claude Code (shoutout to Harper’s blog: https://harper.blog/2025/02/16/my-llm-codegen-workflow-atm/.

Would love feedback or ideas—especially from others playing with codegen for scraping tasks.