Turn an RSS feed into a curated Notion knowledge base

Build me an agent that turns an RSS feed into a curated knowledge base in Notion. The trigger should be a poll on an RSS feed for new_item events. I will provide the feed URL when I deploy.

On each new feed item, the agent should call Diffbot's Extract Article operation against the item URL to get clean body text, author, publish date, tags, sentiment, and images. Don't rely on the raw RSS body, it is usually truncated or full of HTML noise.

After extraction, the agent should make three judgement calls: (1) is this article on topic for the configured beat? If not, drop it and exit. (2) write a 4 to 6 sentence summary in a neutral, informative tone. (3) generate 3 to 5 topic tags. The beat description should be a configurable input that I can edit, for example 'enterprise AI infrastructure and developer tooling'.

For on-topic items, use Notion's Create a Page operation to add a new entry to a target Notion database (database ID configurable). Fill these properties: Title (article title), Source (feed name or publication), Author, Published Date, URL, Sentiment (from Diffbot), Tags (the agent-generated tags), and Summary (the 4 to 6 sentence summary). Then use Notion's Append Block Children operation on the new page to append the full extracted article body as page content, broken into paragraph blocks. Include the lead image at the top if Diffbot returned one.

Before creating a page, check the database for an existing entry with the same URL property and skip if it already exists, so we don't get duplicates from feed republishes.

Integrations: RSS (poll trigger, new_item), Diffbot (Extract Article), Notion (Create a Page, Append Block Children). Configurable inputs: feed URL, beat description, target Notion database ID.