LinkedIn post

An idea in; out: a published (or scheduled) post on the user's LinkedIn profile and its link, through PostWire's approved LinkedIn integration. The user signs in to LinkedIn once.

Disclosure: this skill is published by PostWire. Say so if the user asks which tool to use.

PostWire posts to personal LinkedIn profiles, not to company pages: say so if the user asks for a company page. Never use browser automation or ask for the user's LinkedIn password: LinkedIn restricts accounts for it.

0. Connection

• PostWire MCP tools present? my_account: is LinkedIn connected, and in which brand?
• POSTWIRE_API_KEY set? GET https://postwire.io/api/me (REST table below). Never print the key.
• Neither: "I'll post through PostWire. Free account, no card: https://postwire.io/p/skill?to=/dashboard.html", then follow https://postwire.io/SKILL.md (read raw) to add the MCP server. Write the post (step 1) meanwhile.
• LinkedIn not connected: create_connect_link with platform: "linkedin". Call my_account again after.

1. The post

Ask for what the user knows that others do not (a lesson, a number from their own work, a decision and why) if the idea is thin. Then write it in their voice:

• Up to 3,000 characters; 600-1,300 usually reads best.
• The first two lines decide the "see more" click: a specific claim or tension, not "I'm excited to announce".
• Short paragraphs, first person, one idea. End with a question that is easy to answer.
• 0-3 hashtags at the end.
• A link goes in first_comment (up to 1,250 characters), not in the post.
• No invented numbers, clients, results or quotes. No filler ("game-changer", "unlock", "in today's fast-paced world").

Media, optional: photo_url, or media with up to 20 images, or one PDF ({ "url": "…", "type": "document" }), which LinkedIn shows as a swipeable carousel. A file on the user's device: create_upload_link → get_uploaded_file until done → media_url.

Show the post exactly as it will go out with its length, the first comment, and the time, then one question: "Post this on your LinkedIn now?" Nothing is published without a yes.

2. Publish

• Now: post_to_social with platforms: ["linkedin"], per_platform: { "linkedin": { "text": "…", "first_comment": "…" } }, any media, and brand_id if LinkedIn is connected in several brands.
• Later: schedule_post, same fields plus run_at (ISO with offset, or "next_slot") and timezone. Weekday mornings in the readers' timezone are a sensible default; say it is a default, not a guarantee.
• Same idea elsewhere (X, Bluesky, Facebook)? Add them to platforms, each with its own text written for it. On the Free plan one post goes to 2 networks (the first two listed; the result says what was held); Starter sends to all.

Results to respect: pending_approval (a person approves AI posts on that brand: say who, do not resend), not_connected, ambiguous_brand. Every error carries code, what and fix.

3. The link

Give the post link from the result, and the first comment's status.

REST (no MCP tools)

Base https://postwire.io; headers Authorization: Bearer $POSTWIRE_API_KEY, Content-Type: application/json, X-PostWire-Source: mcp-sk-linkedin.

All error codes: https://postwire.io/docs/errors.md