Agent skill

Browsing Substack

by browsing-skills in browsing-skills/browsing-skills

A skill your agent uses 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…

MITAuto-check passedWriting & Content

Install Browsing Substack

skills CLI
$ npx skills add browsing-skills/browsing-skills --skill browsing-substack -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install browsing-skills/browsing-skills browsing-substack --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/browsing-skills/browsing-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/substack.com .claude/skills/browsing-substack && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
browsing-substack
GitHub stars
116
Token cost
~372 tokens
SKILL.md length
138 words
Files
3 (incl. references)
Skills in repo
24
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses 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…

  • The user wants to extract data from a Substack publication
  • SKILL.md covers Action Index and Notes
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Post — publication metadata (name

What it does

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.

When your agent uses it

  • The user wants to extract data from a Substack publication
  • Post — publication metadata (name
  • Subscriber count
  • Full individual post content (title

Example prompts

  • “/browsing-substack”

What it can do on your machine

Read from SKILL.md and the folder at commit 07855b5. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Browsing Substack loads about 372 tokens when it runs, and up to ~4.2k if it reads all its reference files. Until then it costs about 91 tokens; SKILL.md has 138 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~91
When it runs · the whole SKILL.md, loaded when a task matches
~372
With references · SKILL.md plus every file in references/, read only if the agent opens them
~4.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from browsing-skills/browsing-skills at commit 07855b5, republished under its MIT licence (© browsing-skills). 138 words, ~372 tokens.

Download SKILL.mdSave it as .claude/skills/browsing-substack/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
browsing-substack
description
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.

Substack — Browsing Skill

Use this index to choose the Substack action that matches the user request, then open only the linked reference file for the complete navigation, requirements, code, and return shape.

Action Index

  • publication-data — Extract publication metadata from a Substack homepage: name, author, description, subscriber count (if shown), post count, and a list of recent posts with titles, dates, likes, and URLs. Full spec: references/publication-data.md.
  • post-data — Extract a single Substack post: title, subtitle, author, publication date, full body text, like count, and comment count. Supports an optional markdown output mode. Full spec: references/post-data.md.

Notes

  • Most Substack content is publicly accessible without login. Paid/subscriber-only posts show a paywall preview; the body text will be partial.
  • Substack is server-rendered so selectors are stable across publications.
  • These actions are read-only. They do not subscribe, comment, like, or change account settings.

© browsing-skills, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in skills/substack.com of browsing-skills/browsing-skills.

  • SKILL.md
  • references/post-data.md
  • references/publication-data.md

Open the folder on GitHubat commit 07855b5

Compare with similar skills

Browsing Substack next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Browsing Substack compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Browsing Substack this skillbrowsing-skills/browsing-skills116—~372Automated safety check: PassMIT
Content Trend Researcheralirezarezvani/claude-code-skill-factory8792 repos~2.1kAutomated safety check: PassMIT
Shakespeare Writing StudioZCZHAO-1999/shakespeare-writing-studio178—~1.5kAutomated safety check: PassMIT
Serenity Replyleslieyeo/serenity-reply136—~3kAutomated safety check: PassMIT
End-of-Article CTA Designersamber/cc-skills228—~3.1kAutomated safety check: PassMIT
Idea Extractoraiskilloftheweek/claude-ai-skill-of-the-week145—~1.5kAutomated safety check: PassNone

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More from browsing-skills/browsing-skills

All 24 skills in this repo
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  • Browsing Airbnb

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  • Browsing Aliexpress

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    A skill your agent uses when the user wants to interact with AliExpress — search products, inspect product detail pages, read the shopping cart, or add explicitly requested items to cart.

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  • Amazon.com Browsing Actions

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    Searches Amazon products and groceries, reads product pages and cart contents, and adds explicitly named items to cart, stopping short of checkout.

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  • Capterra Data Extraction

    browsing-skills/browsing-skills

    Extracts software product ratings, pricing and written user reviews from Capterra pages with a real browser, since the site has no public API.

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  • Facebook Marketplace Browsing

    browsing-skills/browsing-skills

    Use when the user wants to interact with Facebook Marketplace — search visible listings, extract listing details, and summarize seller/profile information…

    116 GitHub stars~459 tokensUpdated 3 mo ago
    Auto-check passed

Works with

Questions about Browsing Substack

What does Browsing Substack do?

A skill your agent uses 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…. 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).

When should I use Browsing Substack?

Browsing Substack fits situations like: the user wants to extract data from a Substack publication; post — publication metadata (name; subscriber count; full individual post content (title.

How do I install Browsing Substack in Claude Code?

Run `npx skills add browsing-skills/browsing-skills --skill browsing-substack -a claude-code`. Or copy the skill folder (skills/substack.com in browsing-skills/browsing-skills) into .claude/skills/browsing-substack in your project. Claude Code loads it when a task matches its description.

How do I install Browsing Substack in Codex?

Run `npx skills add browsing-skills/browsing-skills --skill browsing-substack -a codex`. Or copy the skill folder (skills/substack.com in browsing-skills/browsing-skills) into .agents/skills/browsing-substack in your project. Codex loads it when a task matches its description.

Can I use Browsing Substack in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add browsing-skills/browsing-skills --skill browsing-substack -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/browsing-substack, .gemini/skills/browsing-substack, .github/skills/browsing-substack and .opencode/skills/browsing-substack in your project.

What does Browsing Substack need to run?

SKILL.md names no scripts, command-line tools or credentials: Browsing Substack is instructions for the agent only.

Does Browsing Substack access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Browsing Substack safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Browsing Substack use?

Browsing Substack is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Browsing Substack use?

About 372 tokens (SKILL.md is roughly 1.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.8k tokens, read only when the agent opens those files.

What are the alternatives to Browsing Substack?

Skills that share tags, products or a category with Browsing Substack: Content Trend Researcher (alirezarezvani/claude-code-skill-factory, 879 stars), Shakespeare Writing Studio (ZCZHAO-1999/shakespeare-writing-studio, 178 stars), Serenity Reply (leslieyeo/serenity-reply, 136 stars) and End-of-Article CTA Designer (samber/cc-skills, 228 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Browsing Substack?

browsing-skills (a GitHub organization) maintains it in browsing-skills/browsing-skills, which has 116 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on June 10, 2026.

Source: browsing-skills/browsing-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.