Agent skill

Post Writer

by charlie947 in charlie947/social-media-skills

Write LinkedIn posts that match the user's voice system (about-me.md and voice.md).

MITAuto-check passedWriting & Content

Install Post Writer

skills CLI
$ npx skills add charlie947/social-media-skills --skill post-writer -a claude-code

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

GitHub CLI
$ gh skill install charlie947/social-media-skills post-writer --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/charlie947/social-media-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/post-writer .claude/skills/post-writer && 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
post-writer
GitHub stars
3.8k
Token cost
~2k tokens
SKILL.md length
823 words
Files
1
Skills in repo
15
Repo updated
First seen
Licence
MIT

At a glance

Write LinkedIn posts that match the user's voice system (about-me.md and voice.md).

  • Works in 4 steps: Gather inputs → Research and plan → Write the draft → …
  • The user says write a post
  • SKILL.md covers Codex and Claude runtime, CRITICAL: Auto-start on load, Step 1. Gather inputs and Step 2. Research and plan, plus 3 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Post Writer is an agent skill from charlie947/social-media-skills. Write LinkedIn posts that match the user's voice system (about-me.md and voice.md). Use this skill whenever the user says "write a post", "draft a post", "LinkedIn post", "post about [topic]", "content idea", or wants help writing any LinkedIn content. Also trigger when the user pastes a context dump (notes, transcripts, bullet points) and wants it turned into a post. Always references the voice files in the project before writing. Always outputs the final post in a code block.

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Writing & Content, covering Social media posts. It works with LinkedIn. The licence is MIT.

When your agent uses it

  • The user says write a post
  • Post about [topic]
  • Wants help writing any LinkedIn content
  • The user pastes a context dump (notes

Example prompts

  • “write a post”
  • “draft a post”
  • “LinkedIn post”
  • “/post-writer”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Gather inputs
  2. Research and plan
  3. Write the draft
  4. Iterate

What it can do on your machine

Read from SKILL.md and the folder at commit 8cefb5b. 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 (its code samples are json).

    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

Post Writer loads about 2k tokens when it runs. Until then it costs about 124 tokens; SKILL.md has 823 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~124
When it runs · the whole SKILL.md, loaded when a task matches
~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 charlie947/social-media-skills at commit 8cefb5b, republished under its MIT licence (© charlie947). 823 words, ~1,957 tokens.

Download SKILL.mdSave it as .claude/skills/post-writer/SKILL.md (or your agent's skills folder).
name
post-writer
description
Write LinkedIn posts that match the user's voice system (about-me.md and voice.md). Use this skill whenever the user says "write a post", "draft a post", "LinkedIn post", "post about [topic]", "content idea", or wants help writing any LinkedIn content. Also trigger when the user pastes a context dump (notes, transcripts, bullet points) and wants it turned into a post. Always references the voice files in the project before writing. Always outputs the final post in a code block.

Post Writer

Codex and Claude runtime

  • Use this skill in Codex or Claude with the tools actually available in the current task. AskUserQuestion examples describe the questions, not a required API: use an available question tool within its limits, or ask in chat. Reuse answers and source material already supplied.
  • Work in the user-selected project. Read its about-me.md, voice.md and relevant brand files before personalised work. Confirm the intended author if files conflict or contain starter defaults. Ask for missing facts or run voice-builder; never inherit the maintainer's identity, accounts or private files.
  • Resolve bundled references/ relative to this skill folder. For an explicitly requested profile refresh, read and update the canonical about-me.md, voice.md or newsletter-voice.md in place, preserving unrelated user facts and rules. Consumers must reread those canonical files. Use a new filename only for new deliverables that would collide with unrelated existing files. Installation alone never starts an interview or writes files. Do not write persistent learnings unless requested.
  • Use supplied evidence first. Verify external claims through available search/source tools when needed. If a source or integration is unavailable, name the missing capability and offer supplied text/export input. Never invent facts, first-person experience, metrics or a successful tool run.
  • Connect only services needed for the chosen route through the user's existing account. Never print credentials or overwrite connections. Drafting, saving and reviewing do not authorise publishing, sending messages or changing accounts.

CRITICAL: Auto-start on load

The moment this skill triggers, go straight to Step 1. Do not summarise the skill. Do not explain what it does. Do not list the files it references. Jump to input gathering immediately.

Step 1. Gather inputs

Check the project for about-me.md and voice.md. Read both. If either is missing, tell the user to run the Voice Builder skill first ("say build my voice"), then stop.

If both files exist, use these questions (adapt the tool schema as needed):

json
[
  {
    "question": "What topic do you want to post about?",
    "header": "Topic",
    "multiSelect": false,
    "options": [
      {"label": "Paste a context dump", "description": "I have notes, transcripts, or raw ideas to turn into a post"},
      {"label": "I have a topic in mind", "description": "I will type the topic after this"},
      {"label": "Suggest topics for me", "description": "Based on my voice system, suggest 5 topics I should post about"}
    ]
  },
  {
    "question": "Do you have any reference posts you want me to use as structural inspiration?",
    "header": "References",
    "multiSelect": false,
    "options": [
      {"label": "No references", "description": "Write from scratch using my voice files only"},
      {"label": "I will paste examples", "description": "I have posts from other creators I want you to study first"},
      {"label": "Use my training posts", "description": "Reference the posts I used in the Voice Builder"}
    ]
  }
]

Based on the answers:

  • "Paste a context dump": wait for the user to paste, extract the core idea, then proceed to Step 2
  • "I have a topic in mind": wait for the user to type it, then proceed to Step 2
  • "Suggest topics for me": read about-me.md topic pillars and voice.md, suggest 5 specific topics with a one-line angle for each, then use AskUserQuestion to let them pick one
  • "I will paste examples": wait for reference posts, note the structural patterns, then proceed
  • "Use my training posts": read the intended author’s confirmed training posts, not unrelated drafts or another client’s files

Step 2. Research and plan

First read the supplied evidence and requested reference structure. If these support the task, use them without adding unnecessary external research. Verify additional claims when needed; unavailable sources leave those claims pending. Look for:

  • Data points or statistics that support the angle
  • Contrarian takes or surprising facts
  • Real examples or case studies
  • Common misconceptions to challenge

Then present a post plan. Call AskUserQuestion:

json
[
  {
    "question": "Which angle works best for this post?",
    "header": "Angle",
    "multiSelect": false,
    "options": [
      {"label": "[Angle 1 name]", "description": "[One sentence describing the angle and hook]"},
      {"label": "[Angle 2 name]", "description": "[One sentence describing the angle and hook]"},
      {"label": "[Angle 3 name]", "description": "[One sentence describing the angle and hook]"}
    ]
  },
  {
    "question": "Which framework do you want?",
    "header": "Framework",
    "multiSelect": false,
    "options": [
      {"label": "PAS", "description": "Problem, Agitate, Solution"},
      {"label": "How-to list", "description": "Numbered steps or tips"},
      {"label": "Story to lesson", "description": "Personal story with a takeaway"},
      {"label": "Contrarian take", "description": "Challenge a common belief"}
    ]
  }
]

Fill in the actual angle options based on the topic research. Do not use placeholder text for the angle descriptions.

Show full SKILL.md (318 more words)Show less

Step 3. Write the draft

Write the post following these rules:

  • Read voice.md for tone, rhythm, hook style, CTA style, and the absence patterns section (what the voice never does)
  • Read about-me.md for audience and topic context
  • Match the sentence length and paragraph rhythm from voice.md
  • Avoid every banned word, structure, and pattern listed in voice.md's absence section
  • Use the hook pattern that fits the chosen angle
  • End with the CTA style from voice.md

Output the post inside a plain code block:

[The full post goes here with all line breaks and formatting exactly as it should appear on LinkedIn]

After the code block, add 2 to 3 sentences on why you chose this hook and structure, referencing specific patterns from voice.md.

Before presenting the draft, review it in the running assistant against the supplied facts, voice and requested format. For a roster or step caption, map every required item to its matching caption passage and check ordering, duplicates and omissions. Do not replace requested structure with a generic post framework. Keep source notes separate from paste-ready copy. Claude is not a required reviewer in Codex.

Step 4. Iterate

Ask the user:

How does this feel? Tell me what to change, or say "ship it" and I will save the final version.

If the user gives feedback, revise and output a new code block. Maximum 3 revision rounds.

If the user says "ship it" or equivalent, save the final post as a markdown file in the project.

Then say:

Post saved. Say "design a graphic" to create a visual, or "score my post" to get feedback before publishing.

Rules

  • Always read about-me.md and voice.md before writing.
  • Always output posts in a plain code block.
  • Never use em dashes in any post.
  • British English unless voice.md says otherwise.
  • Do not add hashtags unless voice.md explicitly uses them.
  • Do not add engagement bait CTAs unless they appear in voice.md.
  • Keep posts between 150 and 300 words unless the user requests otherwise.
  • Plan before writing. Never skip Step 2.

© charlie947, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/post-writer of charlie947/social-media-skills.

Open the folder on GitHubat commit 8cefb5b

Compare with similar skills

Post 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.

Post Writer compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Post Writer this skillcharlie947/social-media-skills3.8k—~2kAutomated safety check: PassMIT
Socialcoreyhaines31/marketingskills54k4 repos~4.5kAutomated safety check: PassMIT
Social Contentfreekmurze/dotfiles1k23 repos~2.1kAutomated safety check: PassNone
Linkedin Marketingsergebulaev/linkedin-skills4.4k1 repos~3.2kAutomated safety check: NotesMIT
Linkedin Content Plannersergebulaev/linkedin-skills4.4k1 repos~2.1kAutomated safety check: PassMIT
Typefullyfreekmurze/dotfiles1k1 repos~3.4kAutomated safety check: NotesNone

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Works with

Questions about Post Writer

What does Post Writer do?

Write LinkedIn posts that match the user's voice system (about-me.md and voice.md). Post Writer is an agent skill from charlie947/social-media-skills.md).

When should I use Post Writer?

Post Writer fits situations like: the user says write a post; post about [topic]; wants help writing any LinkedIn content; the user pastes a context dump (notes.

How do I install Post Writer in Claude Code?

Run `npx skills add charlie947/social-media-skills --skill post-writer -a claude-code`. Or copy the skill folder (skills/post-writer in charlie947/social-media-skills) into .claude/skills/post-writer in your project. Claude Code loads it when a task matches its description.

How do I install Post Writer in Codex?

Run `npx skills add charlie947/social-media-skills --skill post-writer -a codex`. Or copy the skill folder (skills/post-writer in charlie947/social-media-skills) into .agents/skills/post-writer in your project. Codex loads it when a task matches its description.

Can I use Post 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 charlie947/social-media-skills --skill post-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/post-writer, .gemini/skills/post-writer, .github/skills/post-writer and .opencode/skills/post-writer in your project.

What does Post Writer need to run?

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

Does Post 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 Post 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 Post Writer use?

Post Writer 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 Post Writer use?

About 2k tokens (SKILL.md is roughly 7.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Post Writer?

Skills that share tags, products or a category with Post Writer: Social (coreyhaines31/marketingskills, 54k stars), Social Content (freekmurze/dotfiles, 1k stars), Linkedin Marketing (sergebulaev/linkedin-skills, 4.4k stars) and Linkedin Content Planner (sergebulaev/linkedin-skills, 4.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Post Writer?

charlie947 (a GitHub user) maintains it in charlie947/social-media-skills, which has 3,844 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 15, 2026.

Source: charlie947/social-media-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.