BlogViral

Show HN: Polymcp – Turn Any Python Function into an MCP Tool for AI Agents I built Polymcp, a framework that allows you to transform any Python function into an MCP (Model Context Protocol) tool ready to be used by AI agents. No rewriting, no complex integrations. Examples Simple function: from polymcp.polymcp_toolkit import expose_tools_http def add(a: int, b: int) -> int: """Add two numbers""" return a + b app = expose_tools_http([add], title="Math Tools") Run with: uvicorn server_mcp:app --reload Now add is exposed via MCP and can be called directly by AI agents. API function: import requests from polymcp.polymcp_toolkit import expose_tools_http def get_weather(city: str): """Return current weather data for a city""" response = requests.get(f" https://ift.tt/PjKRBFy ") return response.json() app = expose_tools_http([get_weather], title="Weather Tools") AI agents can call get_weather("Lo...

Show HN: Teemux – Zero-config log multiplexer with built-in MCP server I started to use AI agents for coding and quickly ran into a frustrating limitation – there is no easy way to share my development environment logs with AI agents. So that's what is Teemux. A simple CLI program that aggregates logs, makes them available to you as a developer (in a pretty UI), and makes them available to your AI coding agents using MCP. There is one implementation detail that I geek out about: It is zero config and has built-in leader nomination for running the web server and MCP server. When you start one `teemux` instance, it starts web server, .. when you start second and third instances, they join the first server and start merging logs. If you were to kill the first instance, a new leader is nominated. This design allows to seamless add/remove nodes that share logs (a process that historically would have taken a central log aggregator). A super quick demo: npx teemux -- curl -N https://ift.t...

Show HN: MermaidTUI - Deterministic Unicode/ASCII diagrams in the terminal Hi HN, I built mermaidtui, a lightweight TypeScript engine that renders Mermaid flowcharts directly in your terminal as clean Unicode or ASCII boxes. Visualizing Mermaid diagrams usually requires a heavy setup: a headless browser (Puppeteer/Playwright), SVG-to-image conversion, or a web preview. That's fine for documentation sites, but it's overkill for TUI apps, CI logs, or quick terminal previews. The Solution is a small engine (<= 1000 LOC) that uses a deterministic grid-based layout to render diagrams using box-drawing characters. Key Features - Intelligent Routing: It uses corner characters (┌, ┐, └, ┘) for orthogonal paths. - Topological Layering: Attempts a readable, structured layout. - Support for Chained Edges: A --> B --> C works out of the box. - Zero Heavy Dependencies: No Mermaid internals, no Chromium, just pure TypeScript/JavaScript. With commander for the CLI, not the MermaidTUI...

Show HN: Synesthesia, make noise music with a colorpicker This is a (silly, little) app which lets you make noise music using a color picker as an instrument. When you click on a specific point in the color picker, a bit of JavaScript maps the binary representation of the clicked-on color's hex-code to a "chord" in the 24 tone-equal-temperament scale. That chord is then played back using a throttled audio generation method which was implemented via Tone.js. NOTE! Turn the volume way down before using the site. It is noise music. :) https://visualnoise.ca January 22, 2026 at 12:52PM

Show HN: isometric.nyc – giant isometric pixel art map of NYC https://ift.tt/vgK5B67 January 22, 2026 at 11:52PM