Turn Blog Posts and Changelogs into Social Posts with n8n and Zabio

This template turns what you already publish into social posts. It reads your blog feed and your changelog every 2 hours, or takes any URL you paste in a form. For each new item, Zabio writes a post for every network you use and draws an image when one is needed.

Nothing goes out on its own. You get a WhatsApp message with a link to a review page: every post in an editable box, the image, the networks to tick, and three choices: publish now, schedule, or don’t publish. Upload-Post or Blotato does the publishing, and the page shows the result for each network.

How it works

Part	What it does
Sources	Each row in social_sources is an RSS or Atom feed, a changelog page or a single page, with its brand, language and networks.
New items	Feeds give one item per entry. Changelog pages give one item per h2 heading (or per ## heading in plain Markdown). The first run of a source drafts only the newest item and marks the rest as seen. Each source keeps its own history, so two brands reading the same feed each get their own draft.
Drafting	Each item runs as its own execution. The workflow reads the full article, and Zabio writes every format in one structured call.
Clean-up	Code replaces em and en dashes, removes markdown bold, trims each text to its network’s limit and adds the link where the network shows it.
Image	Zabio draws one image, without text or logos, when Instagram or TikTok are on, or for every post if image_mode is all.
Review	A WhatsApp template message brings the review link. The page waits 48 hours, then the draft is marked expired.
Publishing	Upload-Post or Blotato, chosen per source. Results and links are saved in social_posts.

Network	What it drafts	Link
X	A post of up to 280 characters, and a thread of 3 to 5 posts	At the end of the post, and of the thread’s last post
LinkedIn	500 to 1200 characters in short paragraphs	At the end, with a link preview
Threads	Up to 500 characters	At the end
Bluesky	Up to 300 characters	At the end, with a link preview
Facebook	200 to 500 characters	At the end, with a link preview
Instagram	A caption and the image	None, since links in captions don’t open
TikTok	A photo post with the image, a title and a caption	None

What you need

Item	Where	Notes
n8n	Your own n8n, or n8n on a RemarkableCloud AI server	Built-in nodes only. It must be reachable from the internet, because the review page and the image link run on it.
A Zabio API key	zabio.ai	Writes the posts and draws the images.
Upload-Post or Blotato	upload-post.com or blotato.com	Connects your social accounts and publishes. You need one of them.
WhatsApp Cloud API	Meta	Sends you the review link. The WhatsApp assistant guide explains how to get a number and its credential.

Step 1: Import the template

Download the workflow file from the template page. In n8n, open Workflows, choose Import from File and select it. It arrives inactive, with empty credentials.

Step 2: Create the data tables

In n8n, go to Data tables and create two tables with exactly these names.

social_sources, one row per feed, changelog or page:

Column	Type	What goes in it
source_id	String	A short name, like blog or changelog.
active	Boolean	false pauses the source.
type	String	rss, changelog or page.
url	String	The feed, the changelog page, or the page.
brand	String	The name the posts speak for, like Acme Plumbing.
language	String	en or es: the language of the posts, the review page and the results.
platforms	String	A JSON list of networks: ["x", "linkedin", "threads", "bluesky", "facebook", "instagram", "tiktok"].
x_format	String	post or thread: which X version the review page selects first.
voice	String	How the brand writes, in a sentence or two. Leave it empty for direct, plain copy.
hashtags	String	Hashtags you like to use, like #plumbing #miami.
image_style	String	The look of the images, like flat illustration, navy and light blue.
image_mode	String	visual (images for Instagram and TikTok only), all or none.
publisher	String	upload-post or blotato.
upload_post_user	String	Your Upload-Post profile name.
blotato_accounts	String	A JSON object with Blotato account IDs, like {"x": "1234", "linkedin": "5678"}.
facebook_page_id	String	The Facebook page to post on. Required for Blotato.
linkedin_page_id	String	A LinkedIn company page ID. Empty posts to the personal profile.
approver_whatsapp	String	The number that reviews, with country code.
max_new	Number	How many new items to draft per run. 1 is a good start.

social_posts, filled in by the workflow: post_id, token, source_id, item_key, item_title, item_url, item_text, status, drafts, image_b64, image_prompt, results, created_at, decided_at (all String) and cost_micros (Number).

Tip: A changelog works best when each release has its own h2 heading with an id, like most documentation tools produce. The workflow posts each new heading once.

Step 3: Connect your social accounts

Upload-Post

1. In Upload-Post, create a profile and connect the social accounts to it. Its name goes in upload_post_user.
2. Copy your API key.
3. In n8n, create a Header Auth credential: Name Authorization, Value Apikey YOUR_UPLOAD_POST_KEY.
4. Select it in Post Text (Upload-Post) and Post Image (Upload-Post).

Blotato

1. In Blotato, connect the social accounts and copy your API key.
2. Copy the ID of each connected account into blotato_accounts, using the keys x, linkedin, threads, bluesky, facebook, instagram and tiktok. Blotato’s API docs show where to find them.
3. In n8n, create a Header Auth credential: Name blotato-api-key, Value your key.
4. Select it in Host Image On Blotato and Post (Blotato).

Step 4: Create the WhatsApp template

WhatsApp only lets a business message someone first with an approved template.

1. In WhatsApp Manager, create a Utility template named content_review, with this body: “New posts for {{1}} are ready: {{2}}. Review and publish here: {{3}}”
2. Wait for Meta to approve it.
3. Select your WhatsApp credential in Send Review Link.

For a Spanish template, use language es and set wa_template to content_review|es in the next step.

Step 5: Credentials and settings

Select the Zabio credential (Header Auth: Name Authorization, Value Bearer YOUR_ZABIO_KEY) in Write Posts With Zabio and Draw Image With Zabio. Then open Social Settings:

Field	Default	What it does
n8n_url		Your n8n address, like https://n8n.yourcompany.com. The review page and Blotato load the image from it.
zabio_model	auto/balanced	The model that writes the posts.
image_model	auto	The image model. auto picks the lowest-priced model that makes the size.
image_size	1024x1024	Square works on every network.
wa_phone_number_id		Your WhatsApp phone number ID.
wa_template	content_review|en	The template name and language.
review_hours	48	How long a draft waits for you.
timezone	America/New_York	The time zone of the times you type when scheduling.

Step 6: Activate and try it

1. Activate the workflow. The image link and the review page answer only while it is active.
2. Open the Post From a URL trigger, copy its production URL and open it in a browser.
3. Paste the address of one of your pages and the source_id of a row, and submit.
4. A minute or two later, the WhatsApp message arrives. Open the link, check the posts and submit.

From then on, the feeds and changelogs are read every 2 hours.

The review page

• What to do: publish now, schedule, or don’t publish.
• Publish at: the date and time for scheduled posts, like 2026-11-05 09:30, in the time zone of Social Settings.
• Publish on: the networks. Untick any you don’t want this time.
• On X, publish: the single post or the thread. In the thread box, each paragraph is one post.
• Image: adds the image to the text posts too, when image_mode is visual.
• One box per network, already filled in. Whatever you change is what gets posted.

After you submit, the same page shows each network’s result, with a link where the network returns one, and what the post cost in AI.

What it costs

The template is free. Zabio bills each post’s text and image at its own prices: one call writes every format, and the image is most of the cost. Each result page shows the exact amount. Upload-Post and Blotato charge for their plans, and Meta charges for template messages at its own rates.

Troubleshooting

Symptom	Likely cause	Fix
No WhatsApp message	The template isn’t approved, or approver_whatsapp is wrong	Check the template status in WhatsApp Manager and the number’s country code. Open Send Review Link in the execution for Meta’s error.
The review page shows no image	n8n_url is wrong, or the workflow isn’t active	Set n8n_url to the address you use to open n8n, and activate the workflow.
Nothing drafted from a feed	The first run only records what is there	Wait for the next new item, or paste a URL in the form.
Every changelog entry looks new	The headings have no id and their text changes	Give each release heading a stable id.
“no account ID for x in blotato_accounts”	The JSON is missing that network	Add the key, like "x": "1234".
“facebook_page_id is empty”	Blotato needs the page	Add the numeric page ID to the source.
Instagram or TikTok skipped	No image was made	Check Draw Image With Zabio in the execution. 402 insufficient_credits means the Zabio balance is empty.
A network shows “Failed”	The account was disconnected at Upload-Post or Blotato	Reconnect it there and publish again from their dashboard.

Still stuck? Open a ticket. If your n8n runs on a RemarkableCloud server, an engineer can look at the workflow with you.

Next steps

• WhatsApp assistant with n8n and Zabio
• Daily SEO and AI search watch
• More n8n templates
• Zabio: images