ghostwriter

ghostwriter is a skill for Claude Code from leandronsp/dotfiles. It costs 131 tokens per session (2,231 once invoked), scanned A, original, no licence file.

A tutor and reviewer for technical blog articles on leandronsp.com. The writer creates the article, while the assistant explains the underlying physics, mathematics, and computer-science concepts and reviews the draft.

In plain words
What is it for?
Understanding difficult concepts, preparing passages to adapt, reviewing drafts, and keeping article structures consistent.
Why use it?
It gives the writer technical guidance and concise feedback without taking over the writing.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Understanding difficult concepts, preparing passages to adapt, reviewing drafts, and keeping article structures consistent.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leandronsp/dotfiles/ghostwriter
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add leandronsp/dotfiles --skill ghostwriter
Clone the repo
git clone --depth 1 https://github.com/leandronsp/dotfiles

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ghostwriter

README.md
[![agentmods](https://agentmods.dev/badge/skills/leandronsp/dotfiles/ghostwriter/github.svg)](https://agentmods.dev/skills/leandronsp/dotfiles/ghostwriter)
Your own site
<a href="https://agentmods.dev/skills/leandronsp/dotfiles/ghostwriter"><img src="https://agentmods.dev/badge/skills/leandronsp/dotfiles/ghostwriter/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ghostwriter

Your own site · 80×15
<a href="https://agentmods.dev/skills/leandronsp/dotfiles/ghostwriter"><img src="https://agentmods.dev/badge/skills/leandronsp/dotfiles/ghostwriter.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 131 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,231 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00131 $0.02231
Opus 5.5 $0.00052 $0.00892
Sonnet 5.5 $0.00026 $0.00446
Haiku 4.5 $0.00013 $0.00223

Measured 2mo ago against content hash 1404b7f3de1e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ghostwriter scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

claude/.claude/skills/ghostwriter/SKILL.md · 169 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 169 lines · 131 tokens per session scan A 1404b7f3de1e

Subscribe to this mod's changes

ghostwriter is a skill published in the GitHub repository leandronsp/dotfiles (46 stars, last pushed 23d ago), with no licence file. It adds 131 tokens to every session and 2,231 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

ghostwriter compared with skills from other repositories

ghostwriter next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
ghostwriterleandronsp/dotfilesSkill4623d agononeA131Claude Code
hr-onboardingnexu-io/open-designSkill106ktodayApache-2.0A62Claude Code, Codex
book-mirrorgarrytan/gbrainSkill32ktodayMITA138Claude Code
exam-forecastanthropics/claude-for-legalSkill9.9ktodayApache-2.0A73Claude Code
lean-formalizewanshuiyin/Auto-claude-code-research-in-sleepSkill19kyesterdayMITA81Claude Code
deck-course-modulenexu-io/html-anythingSkill9.4kyesterdayApache-2.0A25Claude Code, Codex
eli5companion-inc/feynmanSkill10k7d agoMITA63Claude Code, Codex