> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://gtm-tools.sh/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://gtm-tools.sh/_mcp/server. # LinkedIn Copywriter > Install the gtm-skills bundle into Claude Code (or any Agent Skills-compatible client) with one command. Includes the `linkedin-copywriter` sub-skill, which reads your recent posts to learn your voice, fetches context for the target post or profile, drafts in your style, scrubs em dashes / banned vocabulary / sycophantic openers / rule-of-three constructions, and returns copy-paste-ready output. Four modes (post / comment / invitation / dm), per-mode char limits, draft-then-paste by default. ## Getting started The `linkedin-copywriter` skill is part of the [gtm-skills](https://github.com/arnaudjnn/gtm-skills) bundle, a [Claude Code skill](https://docs.claude.com/en/docs/claude-code/skills) catalog for GTM workflows, listed on the [skills.sh](https://www.skills.sh/arnaudjnn/gtm-skills/linkedin-copywriter) registry. It's a focused instruction set that loads on demand when an agent is asked to draft LinkedIn content: it uses the gtm-tools [LinkedIn tools](/linkedin-tools) for voice ingestion and context fetching, then drafts and scrubs against an anti-AI pattern list built from the top LinkedIn-ghostwriter skills on the market. The skill calls the gtm-tools HTTP API over `curl`, so it works in Claude Code and any Agent Skills-compatible client with no MCP wiring. Drafting needs only an API key; the two sending modes (`invitation`, `dm`) also need a [LinkedIn session in the pool](/extension). ## Installation Install just the LinkedIn Copywriter skill: ```bash npx skills add arnaudjnn/gtm-skills --skill linkedin-copywriter ``` Add `--yes` to skip the confirmation prompts (for CI or a scripted setup), and `--global` to install at user level instead of into the current project: ```bash npx skills add arnaudjnn/gtm-skills --skill linkedin-copywriter --yes --global ``` Or install the whole `gtm-skills` catalog (`outbound-sales`, `linkedin-copywriter`, `reddit-community-manager`): ```bash npx skills add arnaudjnn/gtm-skills ``` Both work because `arnaudjnn/gtm-skills` follows the [anthropics/skills](https://github.com/anthropics/skills) layout: each skill lives at `skills//SKILL.md` and is addressable by name. ### Claude Code plugin marketplace The repo also ships a [`.claude-plugin/marketplace.json`](https://github.com/arnaudjnn/gtm-skills/blob/main/.claude-plugin/marketplace.json), so you can install it as a plugin instead: ``` /plugin marketplace add arnaudjnn/gtm-skills /plugin install gtm-skills@gtm-skills ``` ### Manual installation Skills are plain markdown. Clone the repo and drop the directory where your client looks for skills: ```bash git clone https://github.com/arnaudjnn/gtm-skills.git cp -R gtm-skills/skills/linkedin-copywriter ~/.claude/skills/linkedin-copywriter ``` ## Configuration ### Environment variable Set the API key once. Every tool call in the skill reads it: ```bash export GTM_TOOLS_API_KEY="" ``` ### Where the skill installs `npx skills add` writes the real files under `.agents/skills//` and symlinks them into each agent directory it detects, including `.claude/skills/` for Claude Code. Pass `--copy` if you'd rather have real files in both places than symlinks, and `--global` to install into your home directory instead of the project. Get an API key with `get_api_key` (see [Getting Your API Key](/knowledge-base/getting-started/getting-api-key)) or run `gtm-tools admin login`, which stores it in `~/.gtm-tools/config.json`. ## Features When the `linkedin-copywriter` skill loads, it teaches the agent: ### Four modes `post` / `comment` / `invitation` / `dm`, each with its own char budget, structure, and tool fan-out. The skill picks the mode from the request and asks rather than guessing when it's ambiguous. ### Voice ingestion Pulls the user's last 15 to 30 posts via `list_user_posts` to learn their register before drafting: sentence length, opener patterns, content pillars, formatting habits. It captures rhythm, never copies phrases. ### The Reaction-Mode Gate For comments, it extracts the original poster's claims **verbatim** and confirms which one to react to before drafting. This catches misreadings before they become public, downvotable comments. ### Anti-AI scrub A mandatory pass against roughly 55 banned corporate tells (*leverage, utilize, robust, paradigm, synergy, streamline, comprehensive, pivotal, transformative, cutting-edge, ecosystem, holistic*, plus intensifiers like *deeply, truly, fundamentally*), an em-dash ban, a rule-of-three ban, a sycophancy ban, and a hedge-stacking ban. Each failure means a rewrite. ### Char-limit guards 3,000 hard / 1,800 to 2,800 sweet spot for posts; 1,250 hard / 200 to 350 for comments; 300 hard for invitations; \~800 target for DMs. ### Draft-then-paste by default Posts and comments come back as copy-paste-ready text, because LinkedIn's write API is gated to approved partners. Invitations and DMs send via `send_linkedin_invitation` / `send_linkedin_message` only after explicit approval ("ship it", not "looks good"). ### Five bundled sub-skills `profiles`, `companies`, `posts`, `jobs`, and `messaging` ship alongside the main skill, each a focused tool reference the agent loads when a draft needs that kind of lookup. ## Example usage Ask in natural language. The skill loads on its own, with no slash command: * "Write a LinkedIn post about what we learned migrating off Segment." * "Draft a comment on this post: ``." * "Ghostwrite this in my voice, I'll paste it myself." * "Write a connection request to the VP of Sales at acme.com." * "Repurpose this blog post into a LinkedIn post." It won't take over pure prospecting (use the [LinkedIn tools](/linkedin-tools) directly, or the [`outbound-sales`](/skills/outbound-sales) skill) or non-LinkedIn channels. ## Resources * [View on skills.sh](https://www.skills.sh/arnaudjnn/gtm-skills/linkedin-copywriter): the full `SKILL.md`, install count, related skills. * [Source on GitHub](https://github.com/arnaudjnn/gtm-skills/tree/main/skills/linkedin-copywriter): `SKILL.md` plus the bundled references (`anti-ai.md`, `hooks.md`, `comment-templates.md`, `tools-reference.md`). Open a PR to improve it. * [LinkedIn Tools](/linkedin-tools): every tool the skill calls. * [Browser Extension](/extension): required for the sending modes.