What Is PostDev?

PostDev is a focused news aggregator for developers building with AI. Think Hacker News, but exclusively for AI development, with automated knowledge extraction.

Every post submitted to PostDev is automatically analyzed by GPT-4o-mini to extract key insights, workflows, techniques, and tools mentioned. This helps you quickly understand what each article is about without having to read through everything.

Why I Built This

I was tired of checking 5 different places (Hacker News, Twitter, Reddit, Discord, various blogs) just to stay current on AI development. PostDev aggregates it all in one place and uses AI to extract the key insights automatically.

It's also a portfolio piece demonstrating production AI system development - from prompt engineering to error handling to cost optimization.

How It Works

1. Submit: Share an interesting AI development article, blog post, or tutorial
2. Extract: GPT-4o-mini analyzes the content in real-time (3-5 seconds)
3. Display: Summary, workflow, techniques, and tools are shown inline in the feed
4. Discuss: Comment and vote like any other aggregator

What Gets Extracted?

From each post, the AI extracts:

• Summary: 2-3 sentence overview of the main point
• Workflow: Step-by-step processes described in the article
• Technique: Named patterns or approaches (e.g., "Semantic Caching")
• Key Insights: Actionable takeaways you can apply
• Warnings: Gotchas and things to avoid
• Tools: Libraries, services, and tools mentioned by name
• Confidence: How confident the AI is about the extraction (0-100%)

Tech Stack

Cost

PostDev is extremely cheap to run thanks to GPT-4o-mini:

• ~$0.0002 per post extraction
• ~$0.09/month for 300 posts
• ~$0.30/month for 1,000 posts

Content fetching (Jina AI) and hosting (Vercel) are free on their respective tiers.

Limitations

Being transparent about what doesn't work (yet):

• Some sites block scrapers (Medium, paywalled content)
• PDFs not supported
• Videos don't have transcript extraction
• Twitter/X threads need special handling
• Works best on blog posts and technical articles

When extraction fails, the post is still created and discussable - you just won't see the AI summary. A clear error message explains why.

Open Source

PostDev is open source! Check out the code, extraction prompts, and architecture on GitHub.

The project demonstrates:

• Full-stack development with Next.js and PostgreSQL
• Production AI integration and prompt engineering
• Real-time processing pipelines
• Comprehensive error handling and retry logic
• Cost optimization and tracking

Roadmap

Completed (Week 1-2):

• ✅ Core aggregator functionality
• ✅ Real-time AI extraction
• ✅ Inline summary display
• ✅ Detailed extraction modal
• ✅ Error handling and retries

Planned (Month 2):

• Pattern recognition across posts
• Clustering similar techniques using embeddings
• Knowledge synthesis and weekly digests
• Better support for GitHub repos and Twitter threads

Contact

Built by Alon Katz as a portfolio piece demonstrating AI-native development skills.

Questions or feedback? Open an issue on GitHub.