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Hacker News: Show HN

PurrrrrFocus: Pomodoro Timer App - App Store Workflow Engine — Multi-Step Orchestration for Bun RapidPhoto: Pro Photo Editor App - App Store GitHub - DheerG/swarms: Achieve extraordinary results with claude code across a variety of tasks SPICE simulation → oscilloscope → verification with Claude Code — Lucas Gerads Show HN: VCoding – A 5 MB native Windows IDE with no dynamic dependencies Show HN: LLMs don't hallucinate because they're bad at math, it's the format GitHub - Agent-FM/agentfm-core: AgentFM is a peer-to-peer network that turns everyday computers into a decentralized AI supercomputer. AgentFM lets you run massive AI workloads directly across a global mesh of idle CPUs and GPUs. Show HN: Tracking Top US Science Olympiad Alumni over Last 25 Years GitHub - Potarix/agent-hub: One place to talk to all your agents Show HN: Runtime security for AI agents(injection,tool abuse, data exfiltration) GitHub - dubeyKartikay/lazyspotify: Terminal Spotify client for macOS and Linux GitHub - the-banana-tool/king-louie: Easy to use GUI Personal AI Assistant. Win/Linux/Mac. Show HN I made my vacation rental bookable by AI agents–no Airbnb, 0% commission GitHub - basteez/jsf-autoreload: maven plugin to enable hot reload on jsf projects uvm32/hosts/host-gdbstub at main · ringtailsoftware/uvm32 GitHub - labsai/EDDI: Config-driven engine that turns JSON into production-grade AI agents. Multi-agent orchestration, 12+ LLM providers, MCP/A2A protocols, RAG, persistent memory, and enterprise compliance (EU AI Act, GDPR, HIPAA). Built on Quarkus. GitHub - glitchnsec/fortyone-oss: AI Executive Assistant Platform Quickstart | Alien GitHub - muxshed/shed: One stream in, or many. Every destination, simultaneously. No cloud middleman, no per-channel fees, no limits. GitHub - ocrbase-hq/ocrbase: 📄 PDF/IMG ->.MD/JSON Document OCR API for PaddleOCR and GLMOCR. Self-hostable. GitHub - impactjo/home-memory: MCP server that lets your AI assistant remember everything about your home. GitHub - Sets88/dbcls: DbCls is a powerful terminal database client that supports various databases GitHub - neptun2000/heor-agent-mcp GitHub - SeanFDZ/macmind: Single-layer transformer in HyperTalk for the classic Macintosh RollQuation: Math Puzzles - Apps on Google Play GitHub - dropbox/witchcraft Show HN: Agent-cache – Multi-tier LLM/tool/session caching for Valkey and Redis GitHub - opentalon/opentalon: OpenTalon is an open-source platform built from the ground up in Go as a robust alternative to OpenClaw LinkedIn™ 职位抓取工具 - Chrome 应用商店 GitHub - EdoardoBambini/Agent-Armor-Iaga: AI agents are getting tool access — shell, file system, databases, APIs, secrets. But **nobody is governing what they actually do with it**. Frameworks like LangChain, CrewAI, AutoGen, and Claude Code give agents the power to execute. Agent Armor gives you the power to control, audit, and approve every single action before it happens. HN Vibes — Week 15, Apr 7–13 2026 GitHub - chojs23/ec: Easy terminal-native 3-way git mergetool vim-like workflow GitHub - SethPyle376/hiraeth: Local AWS emulator focused on fast integration testing, with SQS support, SQLite-backed state, and a debug-friendly web UI. GitHub - JakOb-dotcom/cloud-sandbox-security-analysis: Technical analysis and Proof of Concept (PoC) regarding environment variable exfiltration in containerized cloud sandboxes via side-channel data leaks. Springboards - Flint Alpha Show HN: A simpler coding agent harness GitHub - audiodude/sudomake-friends GitHub - 256thFission/mini-mythos: OSS clone of Anthropic’s Mythos harness to locate C/C++ memory vulnerabilities Show HN: OpenParallax: OS-level privilege separation for AI agent execution Hacker News Sorted - Chrome 应用商店 Show HN: How to Install Docker on Ubuntu 24.04 LTS: Complete 2026 Guide GitHub - himanshudongre/smriti GitHub - sverrirsig/claude-control: macOS desktop dashboard for monitoring and managing multiple Claude Code sessions GitHub - ory/dockertest: Write better integration tests! Dockertest helps you boot up ephermal docker images for your Go tests with minimal work. Chiral - Chrome 应用商店 Show HN: Two Claudes collaborating through shared memory on a $100 mini-PC GitHub - pmichaillat/latex-cv: Minimalist LaTeX template for academic CVs GitHub - oguzbilgic/posse: A web UI for Anthropic Managed Agents. GitHub - sshiraz/depsly: Dependency risk analysis tool for npm packages ABI Add safari/agent-harness — Safari browser automation via safari-mcp by achiya-automation · Pull Request #212 · HKUDS/CLI-Anything GitHub - Halfblood-Prince/trustcheck: Verify PyPI package attestations and improve Python supply-chain security GitHub - oguzbilgic/kern-ai: Agents that do the work and show it. GitHub - bruits/satteri: High-performance Markdown and MDX processing for the JavaScript ecosystem GitHub - tylergibbs1/feedstock: High-performance web crawler and scraper for TypeScript, powered by Bun and Playwright GitHub - Grimm67123/grimmbot: The self-improving sandboxed and open-source AI agent. With persistent memory and scheduling. GitHub - whitevanillaskies/whitebloom: Local whiteboard that blooms. GitHub - hwdsl2/docker-whisper: Docker image for a self-hosted Whisper speech-to-text server with speaker diarization and OpenAI-compatible transcription and translation APIs. Powered by faster-whisper. Supports all Whisper models, NVIDIA GPU (CUDA) acceleration, JSON/SRT/VTT output, SSE streaming, offline mode, and multi-arch (amd64, arm64). GitHub - yisding/reviewwiggum GitHub - MarwanAlsoltany/serrors: Structured errors for Go: sentinel hierarchies, typed data, custom formatting, and slog integration. GitHub - soatok/age-php GitHub - Luthiraa/markitme GitHub - stagas/rtdiff: realtime git diff gui and AI-assisted commits GitHub - tombedor/excalicharts GitHub - wh1le/excalidraw-edit: Open and edit .excalidraw files from the terminal. Offline, auto-saves to disk. MalExt Sentry - Malicious Extension Scanner - Chrome 应用商店 GitHub - syi0808/asciianimesvg: Generate animated ASCII art SVGs from text. CLI, Rust library, WASM, and web editor. GitHub - zaina-ml/ml_forge: A visual-based graph node editor for training computer vision models. GitHub - anakin87/llm-rl-environments-lil-course: 🌱 A little course on Reinforcement Learning Environments for evaluating and training Language Models GitHub - takaakit/superpowers-uml: Superpowers-UML modifies Superpowers to ensure a software development workflow in which AI agents design through UML modeling. AdriByte Studio - Sviluppo Web e Soluzioni Digitali GitHub - chouligi/angel-copilot: Your personalized Angel Investment Advisor Show HN: MoodSense AI (ML and FastAPI and Gradio, Deployed on Hugging Face) Moodsense Ai - a Hugging Face Space by aman179102 GitHub - agenteractai/lodmem: Level Of Detail Context Management for Agents GitHub - ostefani/subnetlens: A fast, concurrent network scanner with a TUI and plain-text CLI, built in Go. It discovers live hosts on your network, scans their open ports, resolves hostnames, and fingerprints operating systems—delivered. Cyber Pulse: Agentic Intel - Apps on Google Play Whisper API: Self-Hostable Speech to Text Transcription The Agent-Web Protocol Stack: A Research Thesis GitHub - msmarkgu/RelayFreeLLM: A restful API designed to route user prompts to various AI model providers. Show HN: Provepy – A Python decorator that proves your code using Lean and LLMs Show HN: Pardonned.com – A searchable database of US Pardons GitHub - patrickdappollonio/dux: Dux is a terminal UI that lets you run multiple AI coding agents side by side, each in its own git worktree, with full companion terminals, macros, commit generation, and a command palette that knows more tricks than you do. kMC Crystal Simulator Show HN: HyperFlow – A self-improving agent framework built on LangGraph GitHub - stef41/vibescore: 🎵 Grade your vibe-coded project. One command, instant letter grade across security, quality, dependencies, and testing. GitHub - stef41/lmscan: 🔍 Detect AI-generated text and fingerprint which LLM wrote it. Open-source GPTZero alternative. Zero dependencies, works offline. imgur.com GitHub - visionscaper/collabmem: Enabling long-term collaboration with Agentic AI - building up episodic and world model memory over time with in-context awareness 在 Steam 上购买 FriedrichAI: Offline AI 立省 10% GitHub - atripati/ark: AI Runtime Kernel — a context operating system for AI agents. Eliminates tool bloat, loads only what’s needed, and gives LLMs their reasoning space back. GitHub - nowork-studio/toprank: Open-source Claude Code skills for SEO, SEM, Google Ads GitHub - tacomanator/sash: Lightweight macOS menu bar app for reliably cycling through windows of the current application. Appents | Social Media Management for Product-First Teams GitHub - pnhoang/youtube-spam-blocker: Automatically detects and hides spam messages in YouTube Live chat. Set rate limits, keyword filters, and block repeat offenders. GitHub - decisionnode/DecisionNode: CLI + Local MCP - A shared structured memory store across Claude Code, Cursor, Windsurf, Antigravity, and every MCP client. Semantically queryable. GitHub - AvaCodeSolutions/django-email-learning: An open source Django app for creating email-based learning platforms with IMAP integration and React frontend components. The $100K Gap in Kubernetes Security Tooling Function Calling Harness: From 6.75% to 100%
Klutch MCP
renatost · 2026-04-28 · via Hacker News: Show HN

Klutch × MCP A Model Context Protocol server for your credit card.

Tell your AI. Your card listens.

Write spending controls in plain English, then ask your assistant anything about where the money actually went. Connect the Klutch MCP server to Claude or ChatGPT and your credit card starts taking instructions — and answering questions — without a dashboard, toggle, or menu in sight.

Works with Claude ChatGPT + any MCP client

Protocol
MCP · streamable http

Auth
OAuth 2.1 bearer

Surface
13 tools · 7 prompts

Claude ChatGPT MCP

Renato

Lock my Travel card when I get home Friday, and cap my Groceries card at $200 per day starting today.

Claude Opus 4.7

Consulting Klutch · reading your cards…

list_cards ok

create_transaction_rule

spec: LockCardRuleSpec
cardIds: ["Travel ••2847"]
displayName: "Auto-lock on arrival"

created

set_spending_limit

cardId: "Groceries ••9113"
amount: 200
period: DAY
resets: true

applied

Done. Two rules live on your account: the Travel card will auto-lock Friday evening, and your Groceries card now holds a $200/day ceiling, resetting at midnight. Want me to schedule a Sunday report on how close you got?

plain english
rules

§ 02The two-minute tour.

Watch the MCP server think out loud.

A short walkthrough: real prompts on a real Klutch account, the model picking tools and arguments on the fly. Same MCP surface anyone can connect to.

klutch-mcp · walkthrough video

§ 03The prompt is the interface.

"No Uber Eats after 10pm on weekdays." "Compare my April spend with last year, by category." "Cap the kids' card at $40 a week." "Block every casino MCC, forever." "Which merchants ate the most of my business card this quarter?" "Lock the travel card until June 3." "Let the business card spend $5k this month, not a cent more." "Chart my takeout spend week by week since January." "Only allow in-person purchases on the backup card." "Decline anything over $300 that isn't recurring." "Freeze the subscription card if it charges a new merchant."

  1. 01

    Cap a total over a period.

    "Don't let the dining card cross $600 in any month."

    period: MONTH
    amount: 600
    filters: [CATEGORY = DINING]
  2. 02

    Refuse anything that matches.

    "Block every merchant whose name starts with 'PAYPAL'."

    field: MERCHANT_NAME
    operator: STARTS_WITH
    value: "PAYPAL"
  3. 03

    Budget for a date window.

    "Give the travel card $2,400 between Jun 3 and Jun 17."

    startDate: 2026-06-03
    endDate:   2026-06-17
    amount:    2400
  4. 04

    Only inside these hours.

    "Only let my teen's card work between 07:00 and 20:00."

    startTime: 07:00
    endTime:   20:00
  5. 05

    Only on these days.

    "The business card runs Monday through Friday. Weekends are off."

    daysAllowed: [MON, TUE,
      WED, THU, FRI]
  6. 06

    Shut the card completely.

    "Lock my backup card. I'll tell you when to open it again."

    spec: LockCardRuleSpec
    // declines all transactions
Claude Opus 4.7 Apr 1 – 22

You're +$318 over April last year. Dining and Transit are the drivers; Groceries pulled you back.

Apr 2025 Apr 2026
$1k $750 $500 $250 $0 Dining Groceries Transit Subs. Shopping +26% −19% +30% −4% +19%

Dining
$487$612
+26%

Groceries
$894$721
−19%

Transit
$156$203
+30%

Subscriptions
$312$298
−4%

Shopping
$445$528
+19%

"Which merchants took the biggest bite out of my business card this quarter?"

Claude group_transactions · LEGAL_NAME

Top 5 merchants account for $15,648 — 67% of the quarter.

  1. 01 Amazon Web Services $8,412
  2. 02 Figma $2,880
  3. 03 Delta Airlines $2,340
  4. 04 Notion $1,176
  5. 05 Linear $840

"Show me takeout spend week by week since January. Am I getting better?"

ChatGPT list_transactions · CATEGORY = DINING

Yes — down 34% from the February peak.

peak · $147 Jan Feb Mar Apr

week 1
$82

peak
$147

this week
$97

§ 06Three minutes, no SDK.

Plug the server in, then just talk.

  1. 01

    Get a Klutch card.

    Most applicants are approved instantly. You'll spend on it — and tell your AI how.

    Apply →
  2. 02

    Add the MCP connector.

    In Claude or ChatGPT: Settings → Connectors → Add custom connector. Paste the URL, sign in with Klutch.

    Remote MCP Server https://mcp.klutchcard.com

  3. 03

    Start asking.

    Type the rule you want — the model picks the tools, fills the arguments, and shows you what it built.

    "Cap my takeout at $50 a week and block DoorDash after midnight."

for the traveler

Plan the Lisbon trip — then make the card behave.

Give my Travel card a $2,400 ceiling between May 3 and May 17, and block anything outside Portugal during that window. Auto-lock it on the 18th.

Built three rules on Travel ••2847: StartEnd · $2,400 · May 3–17 Decline · country ≠ PT LockCard · activates May 18 00:00 You're covered. Want the trip summary pre-filled from last year's Portugal spend?

for the parent

Give the kid a card — with guardrails.

My son is 15. Give him the secondary card with $40/week, nothing after 9pm, nothing online, and auto-decline anything over $25 in a single transaction.

Four rules on Secondary ••0412: Accumulating · $40 · WEEK TimeOfDay · 06:00–21:00 Decline · CARD_PRESENT = false Decline · AMOUNT > 25 He'll see declines in-app. I can text you a daily recap if you want.

for the operator

Close the month without touching a dashboard.

Sum my business card spend this quarter, group it by merchant, and hard-cap the card at $8k for Q2. Exempt the AWS charges from the cap.

Q1 total: $23,418.72 across 142 charges. Top merchants: AWS, Figma, Notion, Linear, Vercel. Built on Business ••5509: Accumulating · $8,000 · QUARTER filter · LEGAL_NAME ≠ "Amazon Web Services" The rule ignores AWS toward the cap. Q2 starts clean.

§ 08Your card. Your rules. Your words.

The menu is gone.
Just say it.