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Publish now

Publish now sends a piece of content to a connected platform immediately. No scheduling, no queue: it posts and returns confirmation.

From the UI​

  1. Open the content in the editor
  2. Open the Publish ▾ menu
  3. Select the connection (platform and account); the piece posts immediately

If the Anti-Slop Guard still flags violations in the piece, they show as advisory warnings at the confirm step; you decide whether to post anyway. On success, the content status changes to published and the post record is created.

From MCP​

{
  "tool": "publish_now",
  "arguments": {
    "contentId": "content_abc123",
    "platform": "linkedin",
    "connectionId": "conn_xyz789"
  }
}

The tool returns the published post ID and the external platform post ID.

What happens on publish​

  1. Reactor fetches the content text
  2. Reactor looks up the connection credentials for the platform
  3. The content is sent to the platform API
  4. A scheduledPosts record is created with status: 'published'
  5. The content status is updated to published
  6. UTM tracking parameters are appended if configured

Platform behavior on publish​

X: A single post publishes whole, whatever its length: long posts go out as extended posts, never truncated. A piece with --- separators publishes as a thread: each part is its own tweet replying to the previous one. Per tweet you can attach up to 4 images or one video.

LinkedIn: Posts to your personal profile or a connected company page. Line breaks are preserved; up to 9 images or one video.

Discord: Posts as a message to the configured channel.

Reddit: Publishes a text post to your default subreddit (set on the Reddit integration page). The piece title becomes the post title; the body posts as Reddit-native Markdown.

Instagram: Publishes the piece's generated image with the caption. Requires an Instagram professional account. If the piece has several images, pin the one to post.

YouTube: Uploads the piece's generated video with title and description prefilled. Uploads land private; flip visibility in YouTube Studio.

TikTok: Sends the generated video to your TikTok inbox as a draft; finish the caption and post it in the TikTok app.

Webflow: Creates and publishes a CMS item in the collection configured on the connection. Re-publishing the same piece updates the item instead of duplicating it.

GitHub: Commits the post as a Markdown file (with frontmatter) to the repository you pick.

Aggregator accounts (Hootsuite, Vista Social): Publish to Facebook, Pinterest, Threads, Bluesky, and other networks routed through your aggregator. X content over 280 characters per part cannot go through an aggregator; publish it directly to X instead.

Press release / custom channels: Not publishable; export as Markdown or DOCX from the editor.

Email providers: Reactor never sends email directly. On an email piece, Publish ▾ → Draft in [provider] builds a ready-to-send draft in Brevo, Mailchimp, Klaviyo, beehiiv, or HubSpot, then you review and send it there. See Email drafts and A/B tests.

Error handling​

If the platform API returns an error, Reactor records the failure on the post with a reason. You can retry from the content editor.

Common errors:

  • 401 Unauthorized: Token expired; reconnect from the Integrations page
  • 403 Forbidden: Account lacks permission (e.g., LinkedIn page posting requires page admin)
  • 429 Too Many Requests: Rate limited, try again in a few minutes