The LinkedIn MCP server
Let Claude, ChatGPT, Cursor or any MCP client write and schedule LinkedIn posts, with the link in the first comment, through LinkedIn's official API.
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Claude scheduling to LinkedIn through Postbase
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PostbaseHow posting to LinkedIn works
- Length
- 3,000
- Characters per post. Only the first few lines show before "see more".
- First comment
- Built in
- Send two parts as a thread and the second is published as the post's first comment.
- Profiles
- Personal
- Posts go out from your own profile. Company pages aren't supported yet.
Problems go back to the agent, not out to your followers
- Too long
- A scheduled post over 3,000 characters is refused when the agent calls the tool, with the reason.
- In the past
- A time in the past is refused rather than posted straight away.
- Expired accounts
- Disconnected or expired LinkedIn channels show their status in list_channels, so the agent can tell you to reconnect.
The tools
The same ten tools on every network.
list_channelsRead onlyList channelsPostbaseThe accounts connected to the workspace: id, network, handle and status. The agent calls it first to get channel ids.
No arguments.
create_postWritesCreate or schedule a postPostbaseSaves a draft, or schedules a post or a thread, on one or more channels. The post lands on your Postbase calendar and publishes through each network's official API.
body or thread, channel_ids, scheduled_at (ISO 8601 with an offset) or schedule_in_minutes, media_ids from list_media or media_urls, channel_bodies for per-channel text, and an idempotency_key so a retried call can't post twice. Leave both times out to save a draft.
get_postRead onlyGet a postPostbaseOne post and how it went on each channel: published with its live link, or failed with the reason and when it will be retried.
post_id, from create_post or list_scheduled.
update_postWritesEdit a postPostbaseEdits or reschedules a draft or scheduled post before it goes out. Only the fields you pass change.
post_id, plus any of create_post's fields. scheduled_at null turns it back into a draft.
retry_postWritesRetry failed channelsPostbaseSends a post again to the channels where it failed. Channels where it already published are left alone.
post_id.
get_analyticsRead onlyGet post analyticsPostbaseHow published posts performed: impressions, likes, comments, shares and saves per channel, with totals for the range.
from and to (YYYY-MM-DD, default the last 30 days), or post_id; channel_id, platform, sort (date or a metric), order, limit.
list_mediaRead onlyList mediaPostbaseThe images and videos in your Postbase media library, newest first. The agent passes their ids to create_post to attach them.
type (optional): image or video. search (optional): part of a file name.
add_mediaWritesAdd media from a URLPostbaseAdds an image or video to your media library from a public link, for attaching to posts.
url (https). name (optional).
list_scheduledRead onlyList scheduled postsPostbasePosts in the workspace with their text, time and channels. Scheduled posts by default, or drafts, published or failed ones.
status (optional): scheduled, draft, published or failed.
cancel_postWritesCancel a scheduled postPostbaseCancels a scheduled post before it goes out. It goes back to being a draft, so nothing is deleted.
post_id, from list_scheduled.
Frequently asked questions
Does the AI need my LinkedIn password?
No. You connect LinkedIn to Postbase with LinkedIn's own sign-in. Your AI tool signs in to Postbase, not LinkedIn, and you can revoke it at any time.
Can it post to a company page?
Not yet. Postbase posts to personal LinkedIn profiles today; company pages are on the roadmap.
Can it add images to LinkedIn posts?
Yes, up to 20 images from your Postbase media library. Video isn't posted to LinkedIn yet.
Related
- Claude + LinkedIn
Set up Claude to post to LinkedIn.
- Claude Code + LinkedIn
Set up Claude Code to post to LinkedIn.
- Cursor + LinkedIn
Set up Cursor to post to LinkedIn.
- X MCP server
Characters per post, counted the way X counts: links are 23 and most emoji are 2.
- Bluesky MCP server
Characters per post, counted as you'd count them by eye. Links are made clickable for you.
- Mastodon MCP server
Characters per post, the default on most instances. Hashtags work as you type them.
- YouTube MCP server
The agent finds the video with list_media and attaches it by id. Postbase uploads it to YouTube when it's due.
- LinkedIn post scheduler
Posts up to 3,000 characters, with a first comment.
From the blog
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