Show HN: Elisym – Open protocol for AI agents to discover and pay each other https://ift.tt/J9OnyMg

Show HN: Elisym – Open protocol for AI agents to discover and pay each other Hey HN, I built elisym — an open protocol that lets AI agents discover each other, exchange work, and settle payments autonomously. No platform, no middleman. How it works: - Discovery — Agents publish capabilities to Nostr relays using standard NIPs (NIP-89). Customers search by capability tags. - Marketplace — Job requests and results flow through NIP-90. Customer sends a task, provider delivers the result. - Payments — Pluggable backends. Currently Solana (SOL on devnet) and Lightning (LDK-node, self-custodial). Agents hold their own keys. 3% protocol fee, no custodian. The payment flow: provider receives job → sends payment request with amount + reference key → customer sends SOL on-chain → provider verifies transaction → executes skill → delivers result. All peer-to-peer. Demo (video): https://www.youtube.com/watch?v=ftYXOyiLyLk In the demo, a Claude Code session (customer) asks an elisym agent to summarize a YouTube video. The provider agent picks up the job, requests 0.14 SOL, receives payment, runs the youtube-summary skill, and returns the result — all in ~60 seconds. You can see both sides: the customer in Claude Code and the provider's TUI dashboard. Three components, all MIT-licensed Rust: - elisym-core — SDK for discovery, marketplace, messaging, payments - elisym-client — CLI agent runner with TUI dashboard and skill system - elisym-mcp — MCP server that plugs into Claude Code, Cursor, etc. What makes this different from agent platforms: 1. No platform lock-in — any LLM, any framework. Agents discover each other on decentralized Nostr relays. 2. Self-custodial payments — agents run their own wallets. No one can freeze funds or deplatform you. 3. Permissionless — MIT licensed, run an agent immediately. No approval, no API keys to the marketplace itself. 4. Standard protocols — NIP-89, NIP-90, NIP-17. Nothing proprietary. GitHub: https://ift.tt/zNjHLBE Website: https://elisym.network Happy to answer questions about the protocol design, payment flows, or Nostr integration. March 18, 2026 at 05:57PM

Show HN: Knowza.ai – Free 10-question trial now live (AI-powered AWS exam prep) https://ift.tt/qfoYMjU

Show HN: Knowza.ai – Free 10-question trial now live (AI-powered AWS exam prep) Hey HN, A few weeks back I posted Knowza.ai here, an AWS certification exam prep platform with an agentic learning assistant, and I got some really valuable feedback around the sign up and try out process. I wanted to say a genuine thank you to everyone who took the time to try it out, leave comments, and share suggestions. It made a real difference. Off the back of that feedback, I've made a bunch of improvements and I'm happy to share that there's now a free tier: you can jump in and try 10 practice questions with no sign-up/subscription friction and no credit card required. This has made a real difference to sign-ups and conversations from those sign-ups. I've went from ~1% conversation rate on the site to 18%. Quick recap on what Knowza does: - AWS practice questions tailored to AWS certification exams - Instant explanations powered by Claude on Bedrock - Covers multiple AWS certs Would love for you to give it another look and let me know what you think. Always open to feedback. https://knowza.ai https://www.knowza.ai/ March 18, 2026 at 10:50PM

Show HN: TerraShift: What does +2°C (or -20°C) look like on Earth? https://ift.tt/c6q4xEl

Show HN: TerraShift: What does +2°C (or -20°C) look like on Earth? I built an interactive 3D globe to visualize climate change. Drag a temperature slider from -40°C to +40°C, set a timeframe (10 to 10,000 years), and watch sea levels rise, ice sheets melt, vegetation shift, and coastlines flood... per-pixel from real elevation and satellite data. Click anywhere on the globe to see projected snowfall changes for that location. --- I'm an amateur weather nerd who spends a lot of time on caltopo.com and windy.com tracking snow/ice conditions. I wanted to build something fun to imagine where I could go ski during an ice age. I used Google Deep Research (Pro) to create the climate methodology and Claude Code (Opus 4.6 - High) to create the site. The code: https://ift.tt/EHWnvC3 The models aren't proper climate simulations, they're simplified approximations tuned for "does this look right?" but more nuanced than I expected them to be. The full methodology is documented here if anyone wants to poke holes in it. https://ift.tt/iOYfFdZ... https://terrashift.io March 17, 2026 at 11:38PM

Show HN: Sulcus Reactive AI Memory https://ift.tt/lda6Eng

Show HN: Sulcus Reactive AI Memory Hi HN, Sulcus moves AI memory from a passive database (search only) to an active operating system (automated management). The Core Shift Current memory (Vector DBs) is static. Sulcus treats memory like a Virtual Memory Management Unit (VMMU) for LLMs, using "thermodynamic" properties to automate what the agent remembers or forgets. Key Features Reactive Triggers: Instead of the agent manually searching, the memory system "talks back" based on rules (e.g., auto-pinning preferences, notifying the agent when a memory is about to "decay"). Thermodynamic Decay: Memories have "heat" (relevance) and "half-lives." Frequent recall reinforces them; neglect leads to deletion or archival. Token Efficiency: Claims a 90% reduction in token burn by using intelligent paging—only feeding the LLM what is currently "hot." The Tech: Built in Rust with PostgreSQL; runs as an MCP (Model Context Protocol) sidecar. https://ift.tt/7rTs8Ra https://ift.tt/zoijuC1 March 17, 2026 at 11:39PM

Show HN: Hecate – Call an AI from Signal https://ift.tt/BgklAK5

Show HN: Hecate – Call an AI from Signal Hecate is an AI you can voice and video call from Signal iOS and Android. This works by installing Signal into an Android emulator and controlling the virtual camera and microphone. Tinfoil.sh is used for private inference. https://ift.tt/bnol8U6 March 16, 2026 at 06:41PM

Show HN: HUMANTODO https://ift.tt/MGtZN0D

Show HN: HUMANTODO https://humantodo.dev/ March 16, 2026 at 01:05AM

Show HN: HN Skins – Available Skins: Cafe, Courier, London, Midnight, Terminal https://ift.tt/8pDQSHu

Show HN: HN Skins – Available Skins: Cafe, Courier, London, Midnight, Terminal https://ift.tt/Sad6bAP March 15, 2026 at 11:34PM