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Show HN: mcp-gate – Ephemeral capability token proxy for LLM tool execution in Go

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I built mcp-gate , a small Go reverse proxy for a problem I keep coming back to with LLM agents: How much authority should we actually give a model when it calls a tool? Repo: https://github.com/ananthaprakashb/mcp-gate A typical agent integration eventually ends up holding something powerful: an API key, service credential, OAuth token, or access to an MCP/tool server that can perform multiple operations. Even when the model is supposed to perform one very specific action, the credential it indirectly controls may authorize far more. I wanted the authorization boundary to look more like this: The model never receives the upstream API credential. Instead, the trusted orchestrator exchanges its gate credential for an ephemeral capability token authorizing one specific operation. For example: {   "route": "tickets",   "method": "POST",   "path": "/v1/tickets",   "ttl_seconds": 15 } The returned bearer token is HMAC-s...
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Vital by ShareCapsule: Building a Local-First Daily Wellness System

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Most wellness apps begin with a category: meditation, exercise, sleep, journaling, or habit tracking. We started from a different question: What are the small actions that help someone support their day as a whole? That question gradually became Vital by ShareCapsule , a mobile-first, installable wellness PWA built around breathing, movement, learning, recovery, connection, and reflection. The goal is not to build another app that asks people to achieve perfect scores or maintain endless streaks. The goal is much simpler: Make small positive actions easy to start, repeat, and understand. Vital is currently built as a local-first Progressive Web App. It does not require an account for the core experience, and the current product stores activity history, routines, settings, wellness check-ins, gratitude metadata, learning reflections, and sleep check-ins in the browser rather than sending them to a central cloud database. Why we built it this way Modern wellness products often become com...
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Recursion

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 Recursion, tail optimization and memoization are important piece of Functional programming. Before jumping into solving complex solutions, I slip on basic structure of recursion lot of times. What is base case and what is recursive step? When I ask most recursive person at home, got the answer as "until I need a charge". Seriously??? I don't know what algorithm it is!!???. It moves all around without any pattern until completely got drained. ☺ May be it is the algorithm... So finding the base case says when to stop.   Another programming example: We are given a denomination of coins/ currency notes and amount of value. We need to identify the minimum number of coins/ currency notes required for calculating that amount. For the amount $3.15, we need to pick up 12 quarters, 1 dime and 1 nickel. So total number of coins is 14 coins. The base case here -> if total of value is equal to the amount required. The recursive step -> pick a higher denomination available to re...
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