Show HN Daily Selection (2025-08-01)
- Mcp-use – Connect any LLM to any MCP
- AgentMail – Email infra for AI agents
- Zero Waste Cloud – Finds 20-40% savings in AWS/GCP bills and CO2 impact
- Demitter – Distributed Node.js Event Emitter (Pub/Sub)
- Astro dev blog template with interactive colorschemes
- SafeRate – AI chat-native mortgage lender
- I built an AI brand generator to stop wasting days naming side projects
- Pairfonts – A web application for pairing Google Fonts
- AgentGuard – Auto-kill AI agents before they burn through your budget
- Publican – an HTML-first static site generator for Node.js
- A desktop-pet app built with bevy
- Clauditate – Breathing exercises while Claude Code is thinking
- Vorsteh Queue – A powerful, ORM-agnostic queue engine
- A tool for complete WebSocket traffic control
- DevNotify – Track Your Starred GitHub Repos and Issues (Open Source)
- Daily Lingo – AI daily stories to learn any language
- Host Claude Artifacts on your own domain
Mcp-use – Connect any LLM to any MCP [Developer Tools]
83 points, 36 comments
A library that simplifies connecting any LLM to any MCP server with minimal code.
- High-level abstraction over the official MCP SDK, reducing boilerplate
- Supports all MCP protocol functionalities
- Includes MCPClient for automatic server configuration and stream handling
- MCPAgent combines MCPClient, LLM, and custom prompts for model-agnostic tool usage
- Secure sandboxed execution for MCP servers
- Meta-tools for dynamic server and tool discovery
- Used by organizations like NASA with over 100,000 downloads
Discussion Link, Original Link
AgentMail – Email infra for AI agents [Developer Tools]
55 points, 31 comments
AgentMail provides API-first email infrastructure for AI agents, enabling programmatic inbox creation and email-based workflows.
- API-first design for seamless integration with AI agents
- Programmatic inbox creation and management
- Events via webhooks and websockets for real-time updates
- Simple API key authentication
- Organization-wide semantic search for efficient email handling
- Structured data extraction from emails
- Usage-based pricing that scales with email volume
- Supports diverse use cases like voice agents, automated workflows, and document processing
Discussion Link, Original Link
Zero Waste Cloud – Finds 20-40% savings in AWS/GCP bills and CO2 impact [Business]
3 points, 0 comments
Zero Waste Cloud helps businesses save 20-40% on AWS/GCP costs while reducing CO₂ emissions by identifying unused or oversized resources.
- Scans AWS/GCP accounts to find idle instances, oversized databases, and unattached storage
- Calculates financial savings and CO₂ reduction using region-specific emission factors
- Supports multi-account/project analysis and generates detailed reports
- Built with React/TypeScript frontend and Supabase backend, leveraging cloud provider APIs
- Fully automated scanning process completes in 5-30 minutes
Discussion Link, Original Link
Demitter – Distributed Node.js Event Emitter (Pub/Sub) [Developer Tools]
3 points, 0 comments
Distributed Node.js event emitter for pub/sub functionality.
- Distributed event emitter for Node.js
- Supports pub/sub functionality
- No additional text details provided
Discussion Link, Original Link
Astro dev blog template with interactive colorschemes [Developer Tools]
22 points, 4 comments
An open-source Astro developer blog template with interactive theme switching and modern design.
- Interactive theme changer with 60 bundled Shiki themes
- Simple configuration file
- Multiple theme modes (light/dark/auto/select)
- Giscus comments integration
- RSS feed support
- SEO-optimized with social card generation
- Markdown extensions (TOC, admonitions, reading time)
Discussion Link, Original Link
SafeRate – AI chat-native mortgage lender [Finance]
10 points, 2 comments
AI-native mortgage lender offering a chat-based experience for anonymous, real-time mortgage quotes and comparisons.
- Instant mortgage quoting without sharing sensitive data (currently for conventional loans in Illinois)
- AI-powered Loan Estimate review and competitive offer generation
- Personalized refinance tracker to notify when rates drop
- Mortgage Q&A for common questions
- Live Zoom-like call with AI assistant for real-time updates
- Multi-platform support (web chat, email, Slack, phone, upcoming SMS/WhatsApp)
- Universal chat context retention across platforms
- Non-hallucinating AI for regulatory compliance
Discussion Link, Original Link
I built an AI brand generator to stop wasting days naming side projects [Business]
3 points, 0 comments
AI-powered brand generator for side projects, providing instant branding kits.
- Generates project names with domain availability checks
- Creates logos, color palettes, and font pairings
- Exports CSS files for immediate use in development
- Designed for indie hackers and designers to streamline branding
Discussion Link, Original Link
Pairfonts – A web application for pairing Google Fonts [Design]
3 points, 0 comments
Pairfonts helps users find and pair Google Fonts for their projects.
- Web application for font pairing
- Focuses on Google Fonts
- Simplifies the process of selecting complementary fonts
Discussion Link, Original Link
AgentGuard – Auto-kill AI agents before they burn through your budget [Developer Tools]
42 points, 26 comments
AgentGuard prevents runaway AI API costs by automatically killing processes when they exceed budget limits.
- Monitors API calls in real-time and stops execution upon hitting budget limits
- Easy integration with just 2 lines of code
- Works with OpenAI and Anthropic APIs
- Provides cost estimates based on documented pricing
- Acts as a circuit breaker to prevent accidental overspending
Discussion Link, Original Link
Publican – an HTML-first static site generator for Node.js [Developer Tools]
3 points, 0 comments
Publican is a lightweight, flexible static site generator for Node.js that emphasizes simplicity and extensibility with JavaScript.
- Processes various content types (markdown, HTML, CSS, JavaScript, etc.)
- Uses JavaScript literal expressions for templates
- Supports clean URL routing and automated navigation
- Includes built-in syntax highlighting and virtual content
- Extensible via function hooks and client-side frameworks
- Offers fast builds and file watch rebuilds
- Provides comprehensive documentation and starter themes
- Includes optional tools like a hot-reloading dev server and static search engine
Discussion Link, Original Link
A desktop-pet app built with bevy [Entertainment]
3 points, 0 comments
A desktop-pet app built with the Bevy game engine.
- Built with Bevy game engine
- Desktop-pet functionality
Discussion Link, Original Link
Clauditate – Breathing exercises while Claude Code is thinking [Health]
6 points, 2 comments
A menubar app that guides users through breathing exercises while waiting for Claude Code to process.
- Integrates with Claude Code to trigger breathing exercises during "thinking" pauses
- Customizable pop-up frequency with smart heuristics to avoid annoyance
- Lightweight and configurable via settings
- Open-source and available on GitHub
Discussion Link, Original Link
Vorsteh Queue – A powerful, ORM-agnostic queue engine [Developer Tools]
3 points, 0 comments
Vorsteh Queue is an ORM-agnostic, PostgreSQL-backed job queue engine designed for reliable background job processing.
- UTC-first timezone design for consistent timestamp handling
- Full TypeScript support with typed job payloads
- ORM-agnostic with adapters for Drizzle and Prisma (PostgreSQL)
- Advanced scheduling (priority queues, delayed jobs, cron scheduling, progress tracking)
- PostgreSQL-backed for strong transactional guarantees without requiring Redis
Discussion Link, Original Link
A tool for complete WebSocket traffic control [Developer Tools]
11 points, 0 comments
A Chrome extension for WebSocket traffic control, offering real-time monitoring, message simulation, and interception within DevTools.
- Real-time WebSocket monitoring and message capture
- Custom message sending in both directions (client ↔ server)
- Block incoming/outgoing messages for testing
- Background monitoring (works even when DevTools is closed)
- MIT licensed, integrates with Chrome DevTools API
Discussion Link, Original Link
DevNotify – Track Your Starred GitHub Repos and Issues (Open Source) [Developer Tools]
4 points, 1 comments
An open-source platform to track starred GitHub repositories and open issues for developers.
- Shows updates from starred repositories
- Tracks issues for contribution opportunities
- Privacy-friendly and fully open-source
- Helps centralize updates from followed projects
Discussion Link, Original Link
Daily Lingo – AI daily stories to learn any language [Education]
3 points, 2 comments
AI-powered daily stories to help users learn any language.
- Uses AI to generate daily stories for language learning
- Supports learning for any language
- Provides engaging, story-based content
Discussion Link, Original Link
Host Claude Artifacts on your own domain [Developer Tools]
5 points, 5 comments
Artifact Ninja converts Claude-generated artifacts into static webpages for easy publishing on custom domains.
- Converts Claude artifacts to static webpages without Claude branding
- Simple copy-paste workflow from Claude.ai to Artifact.Ninja
- Supports custom domain integration via registrar's masked forwarding
- Free to use, hosted on Cloudflare worker + D1