N8n Daily Google Business Profile Posts with DeepSeek + Buffer

Publish fresh, on-brand Google Business Profile posts every day—automatically

This n8n workflow generates differentiated Google Business Profile post topics with DeepSeek, creates post text and an image concept, finds a matching photo on Unsplash, and publishes the finished text + image to your Google Business Profile using Buffer—all on a daily schedule.

What this workflow does

• Runs on a cron schedule (configured for 19:06:00) to keep your GBP activity consistent.
• Uses a DeepSeek-powered LangChain agent to generate five differentiated content topics, parsing the results into structured JSON.
• Uses DeepSeek again to create a post title, post content, and an image description, looping until all required fields are present.
• Humanizes the draft text by rewriting the generated post content with DeepSeek, retrying until the rewritten output is not empty.
• Builds an Unsplash search query from the image description, searches for matching images, and retries if no results are returned.
• Randomizes Unsplash results, selects an image URL, and sends a Buffer GraphQL request to publish the post (with image) to your configured Google Business Profile channel.

Use cases

• Local businesses that want daily Google Business Profile posts without manual writing.
• Automation engineers managing repeatable GBP content pipelines inside n8n.
• SaaS operators who need consistent outreach updates for locations/brands using Buffer.

Technical details

• DeepSeek for topic generation, post creation, image description prompting, and rewriting.
• LangChain agent to produce structured JSON output for five topics.
• Unsplash search via Unsplash developer app (replace the client_id with your access key).
• Buffer publishing via Buffer GraphQL (replace the placeholder apiKey and set the channelId for Google Business Profile).
• Workflow logic includes nodes such as if, set, sort, wait, split out, and sticky note.