Voice Builder
charlie947/social-media-skills
Build a personalised voice profile inside a Codex or Claude project from a short interview plus 3 to 5 sample pieces of writing.
Produce first drafts that match a writer's authentic voice using their Voice DNA Document.
Install Ghost Writer
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install robertguss/claude-code-toolkit ghost-writer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/writing/ghost-writer .claude/skills/ghost-writer && rm -rf skills-srcUse ~/.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/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .claude/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install robertguss/claude-code-toolkit ghost-writer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/writing/ghost-writer .agents/skills/ghost-writer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .agents/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install robertguss/claude-code-toolkit ghost-writer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/writing/ghost-writer .cursor/skills/ghost-writer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .cursor/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/robertguss/claude-code-toolkit.git --path skills/writing/ghost-writer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install robertguss/claude-code-toolkit ghost-writer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/writing/ghost-writer .gemini/skills/ghost-writer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .gemini/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install robertguss/claude-code-toolkit ghost-writerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/writing/ghost-writer .github/skills/ghost-writer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .github/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install robertguss/claude-code-toolkit ghost-writer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/robertguss/claude-code-toolkit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/writing/ghost-writer .opencode/skills/ghost-writer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "ghost-writer" agent skill from https://github.com/robertguss/claude-code-toolkit/tree/main/skills/writing/ghost-writer into .opencode/skills/ghost-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "ghost-writer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
ghost-writer- GitHub stars
- 123
- Token cost
- ~4.5k tokens
- SKILL.md length
- 1,729 words
- Files
- 20 (incl. references)
- Skills in repo
- 16
- Repo updated
- First seen
- Licence
- Proprietary
At a glance
Produce first drafts that match a writer's authentic voice using their Voice DNA Document.
- Works in 7 steps: Intake Phase → Pre-Draft Verification → Drafting Phase → …
- Tasks that involve Blog and article writing
- SKILL.md covers Core Philosophy, What This Skill Does, Dependencies and Session Flow, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Ghost Writer is an agent skill from robertguss/claude-code-toolkit. Produce first drafts that match a writer's authentic voice using their Voice DNA Document. Consumes DNA documents from writing-dna-discovery skill. Generates 2 meaningfully different drafts with headlines, confidence assessment, decision notes, and DNA refinement suggestions. Collaborative partner that evaluates, pushes back, and advocates for quality. Handles blog posts, essays, newsletters, and more.
Its SKILL.md is about 4.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 20 other files, including reference files (for example `design-notes.md`, `references/anti-ai-patterns.md` and `references/blog-writing-guide.md`).
It sits in Writing & Content, covering Blog and article writing and Newsletters. The repository describes itself as: A collection of custom skills that extend Claude's capabilities with specialized workflows, methods, and domain knowledge.
When your agent uses it
- Tasks that involve Blog and article writing
- Tasks that involve Newsletters
Example prompts
- “/ghost-writer”
Workflow steps
7 steps, taken from the step headings in SKILL.md.
- Intake Phase
- Pre-Draft Verification
- Drafting Phase
- Output Delivery
- Feedback Collection
- DNA Refinement Suggestions
- Iteration Loop
What it can do on your machine
Read from SKILL.md and the folder at commit f7fd35e. 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
Ghost Writer loads about 4.5k tokens when it runs, and up to ~48k if it reads all its reference files. Until then it costs about 105 tokens; SKILL.md has 1,729 words of instructions outside code blocks.
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
Its licence (Proprietary) doesn't allow us to republish the file, so here is its outline and opening line. It has 1,729 words (~4,530 tokens).
“Produce first drafts at ~80% voice accuracy using a writer's Voice DNA Document.”
- name
- ghost-writer
- license
- Proprietary
- metadata.author
- robertguss
- metadata.version
- 1.0
Files
SKILL.md and 19 other files (references) in skills/writing/ghost-writer of robertguss/claude-code-toolkit.
- SKILL.md
- design-notes.md
- references/anti-ai-patterns.md
- references/blog-writing-guide.md
- references/clarity-and-cognition.md
- references/closing-strategies.md
- references/common-writing-weaknesses.md
- references/elements-of-style.md
- references/feedback-collection-protocol.md
- references/long-form-essay-guide.md
- references/on-writing-well.md
- references/opening-strategies.md
- references/output-format-guide.md
- references/platform-conventions.md
- references/quality-checklist.md
- references/sentence-mastery.md
- references/session-flow-guide.md
- references/transition-mastery.md
- references/voice-calibration-techniques.md
- references/voice-consumption-guide.md
Open the folder on GitHubat commit f7fd35e
Compare with similar skills
Ghost Writer 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Ghost Writer this skillrobertguss/claude-code-toolkit | 123 | — | ~4.5k | Automated safety check: Pass | Proprietary | |
| Voice Buildercharlie947/social-media-skills | 3.8k | — | ~3.3k | Automated safety check: Pass | MIT | |
| Humanizer Zhai-zixun/humanizer-zh | 177 | — | ~1.2k | Automated safety check: Pass | MIT | |
| Content Writer Agentmastra-ai/mastra | 29k | — | ~1.3k | Automated safety check: Pass | Custom licence | |
| Content Strategy And Assemblyjacob-dietle/context-os | 111 | — | ~3.1k | Automated safety check: Pass | MIT | |
| Linkedin Writerflaqai/backlink_skills | 754 | — | ~6k | Automated safety check: Pass | MIT |
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Humanizer Zh
ai-zixun/humanizer-zh
Remove signs of AI-generated, translated, or overly mechanical Chinese prose.
Content Writer Agent
mastra-ai/mastra
Authoring playbook for building agents that draft written content — blog posts, marketing copy, social media posts, newsletters, product descriptions, landing pages, or ad copy.
Content Strategy And Assembly
jacob-dietle/context-os
This skill should be used when producing content (newsletter posts, blog posts, LinkedIn posts) from existing corpus material.
Linkedin Writer
flaqai/backlink_skills
LinkedIn-native long-form article and newsletter writing workflow for LinkedIn and Google-to-LinkedIn topic discovery, business-depth research, professional thought leadership, evidence-led…
Create Article
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Create long-form articles from knowledge base insights. An agent skill from Abilityai/cornelius.
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Related
Categories
Questions about Ghost Writer
What does Ghost Writer do?
Produce first drafts that match a writer's authentic voice using their Voice DNA Document. Ghost Writer is an agent skill from robertguss/claude-code-toolkit. Produce first drafts that match a writer's authentic voice using their Voice DNA Document.
When should I use Ghost Writer?
Ghost Writer fits situations like: tasks that involve Blog and article writing; tasks that involve Newsletters.
How do I install Ghost Writer in Claude Code?
Run `npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a claude-code`. Or copy the skill folder (skills/writing/ghost-writer in robertguss/claude-code-toolkit) into .claude/skills/ghost-writer in your project. Claude Code loads it when a task matches its description.
How do I install Ghost Writer in Codex?
Run `npx skills add robertguss/claude-code-toolkit --skill ghost-writer -a codex`. Or copy the skill folder (skills/writing/ghost-writer in robertguss/claude-code-toolkit) into .agents/skills/ghost-writer in your project. Codex loads it when a task matches its description.
Can I use Ghost Writer 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 robertguss/claude-code-toolkit --skill ghost-writer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ghost-writer, .gemini/skills/ghost-writer, .github/skills/ghost-writer and .opencode/skills/ghost-writer in your project.
What does Ghost Writer need to run?
SKILL.md names no scripts, command-line tools or credentials: Ghost Writer is instructions for the agent only.
Does Ghost Writer 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 Ghost Writer 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 Ghost Writer use?
Ghost Writer carries a proprietary licence (declared in SKILL.md). It is published on GitHub, but it is not open source: read the licence file before using or sharing it.
How many tokens does Ghost Writer use?
About 4.5k tokens (SKILL.md is roughly 18k 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 44k tokens, read only when the agent opens those files.
What are the alternatives to Ghost Writer?
Skills that share tags, products or a category with Ghost Writer: Voice Builder (charlie947/social-media-skills, 3.8k stars), Humanizer Zh (ai-zixun/humanizer-zh, 177 stars), Content Writer Agent (mastra-ai/mastra, 29k stars) and Content Strategy And Assembly (jacob-dietle/context-os, 111 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Ghost Writer?
robertguss (a GitHub user) maintains it in robertguss/claude-code-toolkit, which has 123 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 16, 2026.
Source: robertguss/claude-code-toolkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.