Post to LinkedIn via API: the LinkedIn API, handled for you (2026)

How LinkedIn posting works

LinkedIn posting uses the LinkedIn API (Share / Posts API) with OAuth and the w_member_social scope. It requires a LinkedIn developer app and product approval before you can publish on a member's or organization's behalf.

PostWire will manage the app approval, OAuth and posting so you publish to LinkedIn the same way as everywhere else — one call.

Honest status

LinkedIn is on the PostWire roadmap. The unified REST endpoint and MCP tool are already defined, so it's a one-word change when it ships. Bluesky, Telegram, Mastodon and Discord are live today — create your free account now and you're ready the day LinkedIn lands.

1. Connect a LinkedIn account (OAuth)

LinkedIn uses OAuth, not a password. Your user connects in the dashboard, or you generate the authorization URL via the API:

curl -X POST https://postwire.io/api/oauth/linkedin/url \
  -H "Authorization: Bearer $POSTWIRE_API_KEY"
# -> { "url": "https://.../oauth/authorize?..." }
# The user opens the URL, approves, and PostWire stores the token (and refreshes it for you).

2. Publish with one REST call

Once connected, posting is a single request. Add more networks by putting more strings in platforms.

curl -X POST https://postwire.io/api/post \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"platforms":["linkedin"],"text":"We just shipped a new feature 🚀","photo_url":"https://cdn.example.com/photo.jpg"}'

3. Or let an AI agent post it (MCP)

PostWire ships a first-class MCP server — not docs-only. Add it to any MCP client:

{
  "mcpServers": {
    "postwire": {
      "command": "npx",
      "args": ["-y", "postwire-mcp"],
      "env": { "POSTWIRE_API_KEY": "pw_live_xxx" }
    }
  }
}

Then the agent just calls the tool:

{
  "name": "post_to_social",
  "arguments": { "platforms": ["linkedin"], "text": "We just shipped 🚀", "photo_url": "https://cdn.example.com/photo.jpg" }
}

LinkedIn via API: build it yourself vs PostWire

Pricing: flat per brand

Running 50 brands on Ayrshare costs roughly $779 — and its MCP is docs-only, so an agent can't actually post. See PostWire vs Ayrshare.

FAQ

Can I post to LinkedIn via API?

Yes. LinkedIn's Share/Posts API lets approved apps publish on a member's or organization's behalf via OAuth with the w_member_social scope. PostWire will wrap the approval, OAuth and posting behind one REST call and one MCP tool.

Does LinkedIn require app approval to post?

Yes. LinkedIn requires a developer app with the relevant product (e.g. Share on LinkedIn / Community Management) approved before you can publish via API. PostWire handles that approval for you.

Is LinkedIn live on PostWire yet?

Not yet — LinkedIn is on the roadmap. The unified endpoint and MCP tool are already defined, so it's a one-word change when it ships. Bluesky, Telegram, Mastodon and Discord are live now.

How will an AI agent post to LinkedIn?

Through PostWire's MCP server (postwire-mcp): the agent calls post_to_social with platforms set to linkedin, text and optional media. PostWire will handle the LinkedIn API OAuth and posting.

How much will posting to LinkedIn cost on PostWire?

Flat per-brand pricing: Free $0 (1 brand, 30 posts), Starter $9, Pro $29, Agency $99 for 50 brands, Scale $299 — LinkedIn included on paid plans when it launches.