How to Write LinkedIn Posts with OpenAI on Mac
Use Echoo with OpenAI to draft compelling LinkedIn posts directly from your Mac without opening a browser. Highlight your rough notes, press a shortcut, and get a publish-ready post.
Why This Combination Works
GPT-4o has been trained on vast amounts of professional content and understands LinkedIn's unique format — the hook-driven opening, short paragraphs, strategic line breaks, and call-to-action endings that drive engagement. It reliably produces posts that feel native to the platform without sounding generic or overly corporate.
Recommended Model
GPT-4o — its broad training on professional content gives it a strong grasp of LinkedIn conventions, from storytelling hooks to engagement-driving formatting.
Example Prompt
Write a LinkedIn post about lessons learned from launching a developer tool as a solo founder. Focus on the importance of dogfooding your own product. Keep it under 200 words, use a compelling opening hook, and end with a question to drive comments.
Setup Steps
Download Echoo
Install Echoo from echoo.ai. It runs from your menu bar and works across every Mac application.
Add your OpenAI API key
In Echoo settings, navigate to AI Providers, select OpenAI, paste your API key, and set GPT-4o as the default model.
Create a LinkedIn post command
Set up a custom command with a system prompt like "Write an engaging LinkedIn post from the provided notes. Use short paragraphs, a strong hook, and end with a conversation starter." Bind it to a hotkey.
Use the keyboard shortcut
Type or select your rough post idea anywhere on your Mac, press the hotkey, and Echoo generates a polished LinkedIn post ready to publish.
Frequently Asked Questions
Yes, especially with a well-crafted system prompt in your Echoo command. Adding instructions like "Write in a conversational first-person voice, avoid buzzwords, and use concrete examples" significantly improves authenticity.
LinkedIn's algorithm favors posts between 150-300 words. You can specify this in your command's system prompt. GPT-4o handles length constraints well and will structure content appropriately within the limit.
Yes. Modify your command's system prompt to say "Generate 3 different versions of this post with different hooks." Echoo will return all variants so you can pick the one that resonates most.
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Ready to Try It?
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