Automate LinkedIn with Gemini CLI
LinkedIn is the one platform where the agent can also read and answer the comments, and the only one that takes a PDF as a post.
$ gemini mcp add --transport http antwork https://api.antwork.io/mcpGemini CLI adds Antwork over HTTP with one command, then authorizes with its own slash command. Two lines and you are posting from the terminal.
Connect it
What you can say once LinkedIn is connected
What is different about LinkedIn
It can reply to comments
LinkedIn is the only platform Antwork implements commenting for. The agent can read the thread under a published post and reply in the same voice it wrote the post in. On every other platform it publishes and stops.
A PDF is a carousel
LinkedIn accepts a document post — a PDF up to 100 MB that readers swipe through in the feed. Attach one and the agent posts it as a carousel. No other platform Antwork supports takes a document at all.
A document can ride with images, video cannot
You can attach a document alongside images, but images and video can never share a post. Ask for both and the agent has to split them, so it will tell you before it drafts rather than after it fails.
Long actually works here
Three thousand characters is roughly 500 words, and LinkedIn is the one place where using them is not a mistake. The agent drafts to the length the format rewards instead of trimming everything to a hook.
LinkedIn limits, as the server enforces them
Posts are capped at 3,000 characters, and the cap is enforced when you schedule or publish, not silently truncated.
- Max size
- 5 MB
- Per post
- 9
- Ceiling
- up to 1920x1080
- Max size
- 5 GB
- Per post
- 1
- Ceiling
- up to 4096x2304 · 30 min max
- Max size
- 100 MB
- Per post
- 1
- Ceiling
- —
- — 9 media items per post, in total.
- — Images and video can never share a post. Ask for both and it has to be split into two.
- — A document can be attached alongside images.
These numbers are read at build time from the same rules file the publishers validate against, so this page cannot claim a limit the server does not enforce.
Questions
- Do I need an API key to connect Gemini CLI?
- No. Antwork connects over OAuth — you approve a consent screen in the browser and you are done. There is no key to generate or paste into a URL, which is how most social MCP servers handle it.
- Do I need a paid account?
- No. The free tier covers one workspace, two connected accounts and 20 posts per cycle, and there is no plan gate on MCP access.
- Will Gemini CLI post without showing me first?
- Not unless you ask it to. Drafting and publishing are two separate steps: the agent writes, renders the post card, and only publishes when you confirm.
- Does the writing sound like AI?
- Antwork learns a voice profile per connected account by reading what you have already published there, and the agent drafts from that profile. On LinkedIn that includes writing to the length the format rewards, up to 3,000 characters.
Never leave Gemini CLI to post again.
One command, one consent screen, and LinkedIn is something you can just ask for.