Automated Weekday LinkedIn Posts with Gemini in n8n

Automated Weekday LinkedIn Posts with Gemini in n8n

Never stare at a blank post again—this n8n workflow generates a fresh LinkedIn post every weekday morning using Google Gemini (via a LangChain agent) and publishes it automatically to your selected LinkedIn profile.

What this workflow does

• Schedules posting automatically: Runs Monday to Friday at 09:00 based on your n8n instance timezone.
• Generates a timely topic + post: A LangChain agent selects a relevant topic and writes a LinkedIn post in the defined voice of “Muhammad Adnan, The Tech Contractor”.
• Uses Google Gemini for content creation: Employs gemini-3.1-flash-lite to generate varied, human-sounding text.
• Validates output before publishing: Enforces a structured response (including topic, post, and engagement_plan) using a structured output parser, and stops the run if the result doesn’t match the required schema.
• Publishes to LinkedIn immediately: Sends the generated post publicly to LinkedIn using your connected OAuth2 LinkedIn account.

Use cases

• SaaS operators who want consistent thought leadership without spending time writing from scratch.
• n8n automation engineers building a reliable “content engine” that schedules, validates, and posts.
• Teams that want structured AI output (topic + engagement plan) to keep LinkedIn content focused and repeatable.

Technical details

• Schedule Trigger: Weekday schedule at 09:00 (timezone-aware).
• LangChain Agent: Generates topic and LinkedIn post content.
• Google Gemini Chat Model: gemini-3.1-flash-lite via n8n’s Gemini node (n8nn8n-nodes-langchainlm chat google gemini).
• Structured Output Parsing: Validates schema with n8nn8n-nodes-langchainoutput parser structured.
• LinkedIn integration: Publishes using the LinkedIn node and your selected person/profile.

Setup checklist

• Add Google Gemini (PaLM) API credential.
• Add LinkedIn OAuth2 credential and select the profile to publish as.
• Confirm n8n timezone so 09:00 matches your intended posting time.
• Review system instructions to adjust writing style, topics, or length before activating.