Browsing Substack is an agent skill from browsing-skills/browsing-skills. Use when the user wants to extract data from a Substack publication or post — publication metadata (name, author, description, subscriber count, recent posts) or full individual post content (title, subtitle, author, date, body text, like count, comment count). Substack is server-rendered and publicly accessible without login for most content.
Its SKILL.md is about 370 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/post-data.md` and `references/publication-data.md`).
It sits in Writing & Content, covering Newsletters. It works with Substack. The repository describes itself as: Open-source registry of browser-automation skills for AI agents. The licence is MIT.