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Substack Newsletter Scraper

Scrape articles from any Substack newsletter using the public Substack API. Supports both subdomain.substack.com URLs and custom domains (e.g., www.lennysnewsletter.com).

Features

• Scrape article metadata (title, author, date, reactions, comments, etc.)
• Optionally fetch full article HTML body
• Filter by audience (free/paid), content type, date range, or keyword
• Scrape multiple newsletters in a single run (comma-separated URLs)
• Concurrent batch fetching for full article bodies
• Polite rate limiting (500ms delay between requests)

Input

Example Input

{
"newsletterUrl":"https://www.lennysnewsletter.com",
"maxItems":10,
"sortBy":"new",
"includeBody":false
}

Multiple Newsletters

{
"newsletterUrl":"https://www.lennysnewsletter.com, https://stratechery.com",
"maxItems":20
}

Output

Each article is saved to the default dataset with the following fields:

Example Output

{
"id":123456,
"title":"How to build a great product",
"subtitle":"Lessons from top PMs",
"slug":"how-to-build-a-great-product",
"url":"https://www.lennysnewsletter.com/p/how-to-build-a-great-product",
"postDate":"2026-03-03T13:45:17.054Z",
"audience":"everyone",
"type":"newsletter",
"wordcount":2642,
"reactions":{"❤":532},
"commentCount":9,
"coverImage":"https://substackcdn.com/image/...",
"author":"Lenny Rachitsky",
"description":"A deep dive into product excellence..."
}

Notes

• Paid articles: Articles marked as "only_paid" may only return a preview of the body content.
• Rate limiting: The Actor adds a 500ms delay between API requests to avoid overloading Substack servers.
• Custom domains: Both newsletter.substack.com and custom domains like platformer.news are supported.
• No authentication required: Uses Substack's public API endpoints.

Cost

This Actor uses only HTTP API calls (no browser), so it's very lightweight:

• ~256MB memory is sufficient
• No proxy required
• A typical run of 50 articles completes in under a minute