How to post to LinkedIn from Gemini CLI

Set it up and post, step by step

Prompt to copy once LinkedIn is connected: Read CHANGELOG.md and write a first-person LinkedIn post about what we shipped in v3.1 and why, with the release link in the first comment. Show it to me, then schedule it for Tuesday at 8:30 my time.

1. Add PostWire to Gemini CLI

   In your terminal (not inside Gemini) run gemini mcp add -s user --transport http postwire https://postwire.io/api/mcp. -s user saves it in ~/.gemini/settings.json for every folder; without it Gemini CLI saves it for the current project only. The URL is PostWire's hosted MCP server: there is nothing to install.

2. Sign in

   Start gemini and type /mcp auth postwire. Your browser opens PostWire's sign-in: your email and a 6-digit code, which also creates a free PostWire account if you have none, with no password and no card. /mcp then lists postwire as connected.

3. Connect your LinkedIn profile

   Ask "connect my LinkedIn". Gemini calls create_connect_link and prints a one-hour link; open it, sign in on LinkedIn's own page and press Allow. PostWire asks LinkedIn only for permission to post as you (w_member_social), plus your name and photo to show which profile is connected.

4. Ask for the post

   "Write the LinkedIn post for the release." generate_posts returns a draft and publishes nothing. It is written for LinkedIn: first person, 1,200 to 1,500 characters when the idea allows, the hook in the first 210 characters (about two lines, what the feed shows before "see more"), very short blocks, 3 hashtags at the end. A link goes in the first comment, not in the body. Ask for changes in plain words until it reads right.

5. Add images or a PDF, if you want them

   Up to 20 images in one post, or one PDF, PowerPoint or Word file on its own, which LinkedIn shows as a document readers swipe through. LinkedIn fetches files from a link, so a file on your disk goes through an upload page: Gemini asks for one (create_upload_link, up to 100 MB on the free plan and 1 GB on paid plans), you pick the files there, and get_uploaded_file hands Gemini their links. A file that is already online goes as its public https link.

6. Publish now, or schedule it

   Say "post it" and Gemini calls post_to_social; the result carries the link to the live post and the first comment's status. Say "schedule it for Tuesday at 8:30" and it calls schedule_post, or uses run_at: "next_slot" for your next free posting hour. Gemini CLI shows the call and waits for you to allow it. This is the call:

   {
     "name": "schedule_post",
     "arguments": {
       "platforms": ["linkedin"],
       "per_platform": { "linkedin": {
         "text": "We shipped CSV export for invoices this week.\n\nIt took three tries. …\n\n#buildinpublic #saas #devtools",
         "first_comment": "The release notes: https://example.com/changelog/v3-1"
       } },
       "run_at": "2026-11-17T08:30:00-05:00"
     }
   }

7. Check the queue

   "What's scheduled on LinkedIn?" calls list_scheduled_posts and "cancel Tuesday's post" calls cancel_scheduled_post; the same queue is on the dashboard's Queue page.

From a release script, gemini -p "write the LinkedIn post for the latest tag from CHANGELOG.md and schedule it for 8:30 tomorrow" runs the same request without the chat screen; the key header and the tool allowlist for that are on the Instagram guide. Prefer to set it up by hand? Open the dashboard, connect LinkedIn under Accounts and copy your key under API & MCP. All Gemini CLI clients: Gemini CLI setup.