Substack Ghostwriting

Q: What is a Claude Code skill and how does the Substack Ghostwriting skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Substack Ghostwriting is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Content · Sub-category: writing · Last updated: 2026-05-21

Write, optimize, and grow Substack content — both newsletter issues (email-first) and web posts (web-first articles/essays). Covers ghostwriting with voice matching, Substack algorithm optimization, Notes strategy, email formatting, SEO, growth tactics, and monetization planning. Use when the user mentions Substack, newsletters, write a newsletter issue, Substack post, Substack article, web post on Substack, evergreen content, SEO for Substack, newsletter growth, Notes strategy, ghostwrite for, match someone's voice, write in the style of, newsletter monetization, paid subscribers, or any task involving Substack as a platform. Also trigger for general article/newsletter writing even if Substack isn't named explicitly, or when the user wants to adapt existing content (blog post, talk, thread) into newsletter or web post format. Do NOT use for generic blog post writing without a newsletter/Substack context (-> See samber/cc-skills@technical-article-writer skill).

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

Substack Ghostwriting includes pricing or quota commentary. At roughly 2,141 words the SKILL.md is on the longer end of the catalog distribution.

License: MIT
Indexed lastmod: 2026-05-21
Catalog position: Content · writing
Indexed related skills: 10

How Substack Ghostwriting fits the catalog

Substack Ghostwriting sits in the Content category under the writing sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

Is Substack Ghostwriting safe to install?

A free static scan against the OWASP Agentic Skills Top 10 found no risk patterns in Substack Ghostwriting’s SKILL.md — no data-exfiltration, prompt-injection, or unexpected-execution signatures. The full security scan is below.

Installing & verifying

Installing Substack Ghostwriting writes its SKILL.md to ~/.claude/skills/substack-ghostwriting/SKILL.md; Claude Code discovers it automatically on the next session — no restart flag needed. It declares no allowed-tools restriction, so it inherits your session’s existing tool access rather than narrowing it. To confirm it loaded, ask Claude to list its available skills — substack-ghostwriting should appear by name.

What Substack Ghostwriting needs to run

External services: The SKILL.md references pricing, quota, or rate limits — it likely calls a paid or rate-limited API. Check the source before wiring it into unattended automation.
Depth: ~2,141 words, substantial — top of the catalog distribution.

When to reach for it

There are 10 related skills in Content — a two-minute scan of the alternatives usually confirms whether Substack Ghostwriting is the right pick.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

A skill for writing Substack content — both newsletter issues (email-first) and web posts (web-first articles/essays) — that grows subscribers and converts readers. Handles two voice modes (own voice, ghostwriting) and two format modes (newsletter issue, web post).

What this skill does

Substack Ghostwriting is a community-contributed Claude Code skill in the writing sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/substack-ghostwriting/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user mentions Substack, newsletters, write a newsletter issue, Substack post, Substack article, web post on Substack, evergreen content, SEO for Substack, newsletter growth, Notes strategy, ghostwrite for, match someone's voice, write in the style of, newsletter monetization, paid subscribers, or any task involving Substack as a platform. Also trigger for general article/newsletter writing even if Substack isn't named explicitly, or when the user wants to adapt existing content (blog post, talk, thread) into newsletter or web post format.

Who uses this skill

The Substack Ghostwriting Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 178,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/substack-ghostwriting
curl -L https://claudskills.com/skills/substack-ghostwriting/SKILL.md \
  -o ~/.claude/skills/substack-ghostwriting/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/substack-ghostwriting/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/substack-ghostwriting/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\substack-ghostwriting\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Substack Ghostwriting Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/substack-ghostwriting/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Substack Ghostwriting skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Substack Ghostwriting skill?

Use Substack Ghostwriting when your Claude Code task falls under the Content category — specifically in the writing area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Substack Ghostwriting" or describe the task and let Claude pick). Browse related skills at /category/content/.

What is a Claude Code skill and how does the Substack Ghostwriting skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Substack Ghostwriting is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

License: MIT

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

ClaudSkills. (2026). Substack Ghostwriting [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/substack-ghostwriting/

BibTeX

@misc{substack-ghostwriting-2026,
  author    = {ClaudSkills},
  title     = {Substack Ghostwriting [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/substack-ghostwriting/}
}

Embed this skill

Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →

Badge

[![ClaudSkills](https://claudskills.com/badge/substack-ghostwriting.svg)](https://claudskills.com/skills/substack-ghostwriting/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)

Security scan

Grade A · scanned 2026-08-08 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
✓ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/substack-ghostwriting/#security)