The free LinkedIn agent skill for Claude and ChatGPT

The skills are. All 12 are open source under the MIT license, and PostZen’s free plan costs $0, covers 2 connected social accounts and 20 posts a month, and needs no credit card. What you bring is your own Claude or Codex access; the skills run inside whichever one you already use.

No. Nothing gets posted until you say yes. Every write goes through /li-publish, which shows the exact text, account, visibility and time first and waits for an explicit yes to that block. A "looks good" about an earlier draft doesn’t count. After publishing, it reads the post status back to verify the post went live, because a success message on its own doesn’t prove that.

No. PostZen connects your personal LinkedIn profile and publishes there. Company pages are not supported, and the skills will tell you so rather than try a workaround. When you connect, there is no page picker, only your own profile.

No. PostZen does not read LinkedIn comments, the inbox, DMs or analytics, and it does not post first comments. /li-reply, /li-inbox and /li-audit work from what you paste in: the comments under your post, your messages, or the analytics export from LinkedIn. They sort, score and draft; you post the replies yourself. Publishing and scheduling to your profile is what PostZen does.

Text posts up to 3,000 characters, up to 10 images with alt text on each, one MP4 video, or one PDF as a document post (the carousel format). You can set visibility to anyone or connections only, give a document or video a title, reshare a post with your text on top, or turn the link card off. It can publish now, schedule a time, queue into the next free slot or save a draft. Not on this route: tagging people, polls, articles, newsletters, first comments, and editing a post after it is live.

Claude Code (or Codex) gets the full setup: all 12 skills installed, the two Python scripts behind /li-human, and the PostZen MCP server. The Claude app cannot install skills from a chat, so it gets a lighter path. Add PostZen as a custom connector (Settings, then Connectors, then Add custom connector, URL https://mcp.postzen.dev/mcp, Connect, and pick Read & Write on the PostZen page), then paste a single SKILL.md at the top of a chat to use that skill as a mode. You lose the Python scripts, which are most of the humanizer, but the writing works and publishing still waits for your approval.

Codex is supported: paste the install prompt and sign in to PostZen with codex mcp login postzen. ChatGPT is not a tested route. What you can do there is paste a single SKILL.md at the top of a chat and use that skill as a writing mode, without the Python scripts and without publishing.

Not for writing. Every skill produces copy you can post yourself, and that is how the pack worked before PostZen was part of it. PostZen is required for anything that touches your profile: publishing, scheduling, queueing and saving drafts through /li-publish.

Yes. PostZen is an approved LinkedIn partner and holds the tokens and the approval, so Claude posts through LinkedIn’s official API. There is no browser automation and no scraping, which LinkedIn’s User Agreement prohibits; the skills refuse to drive the LinkedIn site even when asked. PostZen generates the connect link, the page it opens is LinkedIn’s own login, and Claude never sees your password.

Two Python scripts with no dependencies. humanize.py removes invisible watermark characters (17 classes of them), turns em dashes into commas and curly quotes straight, and swaps 113 stock words and phrases for plain English. detect.py scores the result 0 to 100 on five checks: burstiness, specificity, slop density, fingerprint and voice. These are local heuristics modelled on what public detectors look for. They are not GPTZero, Originality or Turnitin, they don’t call those services, and nobody can honestly promise "undetectable". Everything runs on your machine; nothing is uploaded.

The Free plan is $0: 2 connected social accounts, 20 posts a month, no credit card. Paid plans start at $29 a month with Starter, which covers 5 accounts and unlimited posts. Your Claude or Codex subscription is separate and billed by its own provider.

A LinkedIn AI agent is a model that takes actions on an account. On their own, these skills prepare content for you. With PostZen connected they act on your profile as well: publishing, scheduling and queueing posts through LinkedIn’s official API. Comments, inbox and analytics are not supported. Every publish still waits for your approval.