LAGIC
Lead Audience Growth Intelligence Computing
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Substack Scraper — Substack | Lagic

Built ForB2B SaaSMarketing AgenciesVenture Capital

Extract posts, subscriber counts, and author data from any Substack newsletter.

Curated by Lagic·Verified working

Configure Agent

Substack newsletter URLs to scrape. Accepts homepage (e.g. ), custom domain (e.g. ), post URLs, or /archive URLs.

Maximum number of posts to scrape per newsletter. Set to 0 for unlimited (full archive).

Include full HTML body of each post. Disable for metadata-only scraping (faster, cheaper).

Fetch comments for each post. Adds one extra API request per post.

Include newsletter metadata (subscriber count, pricing, author info). One extra request per newsletter.

Filter by post type.

Only include posts published after this date (YYYY-MM-DD format).

Only include posts published before this date (YYYY-MM-DD format).

Results to deliver

100 credits

This agent actively searches live listings — results may vary. You are only charged for what is delivered, up to this number.

Lagic Proxy

Country auto-rotated. Need a specific region? Contact support.

Pricing

1 credit per result
✓ 30 free credits on signup✓ Refund if 0 results✓ No card required

Sample Data Preview

Post title, subtitle, and URLFull post content in HTML formatPublication name and URLAuthor's name, bio, handle, and profile photo URLEstimated subscriber count for the publicationPost publication and update dates
https://...Value...https://...https://...5502026-04-05
https://...Value...https://...https://...2072026-04-05
..................
Exports as:CSVXLSXJSON

Overview

Scrape posts, comments, and publication details from any Substack newsletter, including those on custom domains. Ideal for content analysis, competitor research, and lead generation.

Substack is a major hub for high-intent, niche audiences and expert commentary. This tool gives you direct access to the data behind any newsletter, allowing you to analyze content strategies, track author influence, and discover partnership opportunities. You can provide a list of Substack URLs—whether they are standard `*.substack.com` domains, custom domains, archive pages, or individual post links—and extract a structured dataset. The tool can retrieve the full HTML content of every post, or just the metadata like titles and engagement stats if you need a faster, lighter export. You can also opt to include all comments for each post to analyze audience sentiment and discussion topics. ### Who is this for? * **Marketing & Sales Teams:** Identify influential newsletters in your niche for sponsorships, collaborations, or building targeted outreach lists of authors. * **Content Strategists & Creators:** Analyze what topics, headlines, and formats generate the most likes, comments, and 'restacks' for competitors or peers. * **Market Researchers & Analysts:** Track the growth and engagement of newsletters in specific industries to understand market trends and audience interests. * **Agencies:** Provide clients with detailed competitive intelligence on their Substack landscape, informing their content and growth strategy.

Key Capabilities

  • ✓ Post title, subtitle, and URL
  • ✓ Full post content in HTML format
  • ✓ Publication name and URL
  • ✓ Author's name, bio, handle, and profile photo URL
  • ✓ Estimated subscriber count for the publication
  • ✓ Post publication and update dates
  • ✓ Engagement metrics: like count, comment count, and restack count
  • ✓ Post metadata: tags, word count, and post type (newsletter, podcast, or thread)
  • ✓ For podcasts: audio URL and duration in seconds
  • ✓ Full thread of comments for each post (if enabled)
  • ✓ Analyze a competitor's entire posting history to identify their most successful content themes based on likes and comment counts.
  • ✓ Build a targeted list of newsletters in a specific niche for potential sponsorship or advertising campaigns.
  • ✓ Monitor mentions of your brand or keywords across multiple Substacks to track industry conversation.
  • ✓ Extract full post content from several newsletters to create a dataset for AI model training or natural language processing.
  • ✓ Identify potential podcast guests or collaborators by finding authors who write about relevant topics.
  • ✓ Archive all posts from a specific newsletter for personal research or offline reading.
  • ✓ Compare the posting frequency and content type (newsletter, podcast, thread) of multiple publications.

Field Dictionary

How To Run This Extractor

1

Paste one or more Substack newsletter URLs into the input field.

2

Set the maximum number of posts to retrieve for each newsletter, or set to 0 for the full archive.

3

Choose whether to include the full post content, comments, and publication info using the toggle options.

4

Optionally, filter posts by type (newsletter, podcast, thread), date range, or to include only free posts.

5

Run the tool and wait for the data to be collected.

6

Download your results as a CSV, JSON, or Excel file.

Frequently Asked Questions

Do I need coding skills to use this tool?
No, you only need to provide a list of Substack URLs and select your desired options from a visual interface.
What formats can I export the data in?
Is it legal to scrape Substack?
Can I scrape newsletters that use a custom domain?
How accurate is the subscriber count?
Can I get the full text of paywalled posts?
How many newsletters can I scrape at once?
Can I schedule this tool to run automatically?
What is the difference between disabling and enabling 'Include Post Content'?
Does including comments significantly slow down the process?
How can I get all posts ever published?