I built PostCraft AI to help people post on LinkedIn without losing their voice

Hi Indie Hackers 👋

I’ve been working on a project called PostCraft AI, and I wanted to share the story behind it.

The problem

I’ve always struggled with writing consistently on LinkedIn. I’d open the editor, stare at the blank box, and either overthink the wording or give up entirely.

When I talked to friends and colleagues, I realized I wasn’t alone: many busy professionals (and especially introverts) want to post, but they either don’t know what to say or they worry that using AI makes them sound fake.

The solution I’m building

PostCraft AI is a writing assistant for LinkedIn. It’s not meant to spit out viral content in one click. Instead, it works like this:

• You start with raw notes, bullet points, or a rough draft.

• PostCraft helps you shape it into a post that flows better.

• You can then tweak it so it still sounds like you.

The whole goal is to remove the friction of posting while keeping the authenticity.

What’s different

• It’s focused only on LinkedIn, not "every social media platform."

• The UX is deliberately simple: I want it to feel like editing with a helpful friend.

• I’ve avoided "marketing fluff" templates. It’s about enhancing your voice, not replacing it.

Tech stack

• Frontend: Next.js

• Backend: Supabase

• AI: OpenAI’s API (with prompts tuned to keep style natural)

Where I’m at

The product is live at postcraft-ai.com. Right now I’m looking for feedback:

• Does the tool feel useful in practice?

• Does it strike the right balance between speed and authenticity?

• What’s missing that would make it a must-have for you?

I’d love to hear your thoughts. If you’ve ever felt stuck staring at the LinkedIn post box, this is for you.