Show HN Daily Selection (2025-09-04)
- Entropy-Guided Loop – How to make small models reason
- LightCycle, a FOSS game in Rust based on Tron
- Chibi, AI that tells you why users churn
- Run gpt-oss-20b on 8GB GPUs
- Best JSON Comparison Tool
- Helpme, a CLI tool to look up emergency and non emergency resources
- A vibe port of security library libinjection from C to Rust
- VoiceGecko – System-wide voice-to-text that types anywhere
- Text2SQL with a Graph Semantic Layer
- Multi-Agent-Coder Is #12 on Stanford's TBench. Beats Claude Code
- Tail Lens – Visually edit tailwind css dev tool
Entropy-Guided Loop – How to make small models reason [Developer Tools]
26 points, 0 comments
A small, vendor-agnostic inference loop that improves reasoning in LLMs by using token logprobs, perplexity, and entropy to trigger refinement passes.
- Captures logprobs/top-k during generation and computes perplexity/token-level entropy
- Triggers at most one refine pass with an "uncertainty report" (uncertain tokens + top-k alternatives + local context)
- Recovers reasoning quality in small models at ~⅓ the cost while refining ~⅓ of outputs
- Works with Python and APIs exposing logprobs (tested with OpenAI non-reasoning models)
- Uses lightweight observability via Weave (optional)
- Vendor-agnostic design avoids fragile vendor-specific optimizations
- Requires light tuning of thresholds per domain but avoids over-correction
- Open-source notebook and minimal code available on GitHub
Discussion Link, Original Link
LightCycle, a FOSS game in Rust based on Tron [Entertainment]
44 points, 14 comments
LightCycle is a free and open-source game developed in Rust, inspired by Tron.
- Developed in Rust
- Open-source (FOSS)
- Inspired by Tron's gameplay
Discussion Link, Original Link
Chibi, AI that tells you why users churn [Business]
9 points, 3 comments
Chibi is an AI tool that analyzes user session replays to identify reasons for churn and drop-off.
- Analyzes session replays to pinpoint issues causing user churn
- Helps PMs and founders understand user behavior without manual review
- Built with Elixir, Phoenix, rrweb, and Gemini
- Future vision includes AI-driven product management, feature prioritization, and A/B testing
Discussion Link, Original Link
Run gpt-oss-20b on 8GB GPUs [Developer Tools]
5 points, 0 comments
Run gpt-oss-20b on 8GB GPUs
- Enables running large language models on lower-memory GPUs
- Optimizes performance for resource-constrained hardware
Discussion Link, Original Link
Best JSON Comparison Tool [Developer Tools]
3 points, 2 comments
A feature-rich JSON comparison tool with real-time updates and multiple input options.
- Real-time JSON comparison
- Dynamic JSON path display during navigation
- Supports typing, pasting, file import, or drag-and-drop for input
- Optional sync-scroll functionality
- Sorts JSON for easier diff viewing
- Swap JSON content for comparison
- Download JSON files with custom names
- Fully client-side operation
- No ads
- Dark/light mode support
- Also functions as a JSON formatter/minifier
Discussion Link, Original Link
Helpme, a CLI tool to look up emergency and non emergency resources [Life Assistant]
4 points, 0 comments
Helpme is a CLI tool for quickly finding emergency and non-emergency resources.
- Command-line interface for easy access
- Provides both emergency and non-emergency resource information
- Designed for quick lookups in urgent situations
Discussion Link, Original Link
A vibe port of security library libinjection from C to Rust [Developer Tools]
3 points, 2 comments
A Rust port of the security library libinjection.
- Ported from C to Rust
- Focused on security functionality
- Maintains original library's purpose
Discussion Link, Original Link
VoiceGecko – System-wide voice-to-text that types anywhere [Productivity]
53 points, 7 comments
System-wide voice-to-text tool that types anywhere.
- Works across all applications
- Enables hands-free typing
- Supports voice input universally
Discussion Link, Original Link
Text2SQL with a Graph Semantic Layer [Developer Tools]
6 points, 2 comments
QueryWeaver is an open-source text-to-SQL tool that uses a graph semantic layer to translate natural language queries into SQL.
- Uses a graph-based semantic layer to understand business context and relationships
- Handles complex queries with follow-up questions by tracking conversation state
- Works with existing databases without data migration
- Generates standard SQL outputs compatible with any database
- Offers an API key for testing and feedback
Discussion Link, Original Link
Multi-Agent-Coder Is #12 on Stanford's TBench. Beats Claude Code [Developer Tools]
4 points, 1 comments
Multi-agent coding system that outperforms Claude Code on Stanford's Terminal Bench.
- Uses orchestrator agent to manage explorer and coder subagents
- Features intelligent context sharing for complex terminal tasks
- Open-source with detailed technical documentation and prompts
- Designed for extensibility and user experimentation
Discussion Link, Original Link
Tail Lens – Visually edit tailwind css dev tool [Developer Tools]
6 points, 1 comments
A browser-based tool for live-editing Tailwind CSS classes with real-time suggestions and previews.
- Live-edits Tailwind CSS classes directly in the browser
- Inspects and navigates the DOM
- Provides real-time class suggestions
- Supports Tailwind CSS v3 and v4
- No need to switch to a code editor