---
title: "Engineering Projects & Systems Lab — Daniel Herrington"
description: "Personal engineering projects, open-source tools, and AI agent architectures built by Daniel Herrington."
url: "https://herrington.ai/projects/"
markdown_url: "https://herrington.ai/projects/index.md"
author: "Daniel Herrington"
date: "2026-10-31"
updated: "2026-10-31"
markdown_tokens: 2122
content_signal: "ai-train=yes, search=yes, ai-input=yes"
mcp_endpoint: "https://herrington.ai/mcp"
---
# Engineering Projects & Systems Lab — Daniel Herrington

Open-source tools, autonomous agent gateways, domestic smart displays, and generative web applications.

## Shipped Systems

- **DealerDirect National Car Inventory MCP: 500k+ Live Vehicles & Shielded Negotiation** (Agentic Commerce & MCP): Published on the Official Model Context Protocol Registry: a public Streamable HTTP MCP server indexing 500,000+ live new, used/CPO, and 8,400+ classic/collector vehicles across 1,600+ dealerships in all 50 US states. Exposes itemized dealer fee breakdowns, insurance quote payloads for True Monthly Cost, and zero-PII disposable buyer proxy negotiation. | Stack: Model Context Protocol, Streamable HTTP, Agentic Commerce, Shielded Proxy Relay, ADF/XML 1.0, Cloud Run, PostgreSQL, TypeScript | URL: https://herrington.ai/projects/dealer-direct-mcp/
- **Unified Agent Memory Plane & Jev Knowledge Graph** (Multi-Agent Memory & Graph): A local-first, offline-tolerant shared memory plane and System-One Knowledge Graph (Jev) connecting Grok Bot, Instinct (OpenClaw), Muse, Claude Code, and Antigravity via SQLite WAL/FTS5, live PULSE.md symlinks, store-and-forward outbox queues, and universal MCP tools. | Stack: Model Context Protocol, Jev System-One Model, Knowledge Graph, SQLite WAL & FTS5, Store-and-Forward Queue, Node.js, CUJ Framework | URL: https://herrington.ai/cujs/unified-agent-memory-plane/
- **KnowMe MCP: LinkedIn for Agents to Learn About Humans** (Agentic Identity & MCP): LinkedIn is for humans to learn about humans; KnowMe is for AI agents to learn about humans. Combines a recurring Wispr Flow voice-dictation AI Interviewer with a public Model Context Protocol (MCP) front door and an Agent Missed-Call Queue so external agents can query your unwritten human context or queue questions for your next interview. | Stack: Model Context Protocol, Wispr Flow Dictation, Gemini 4.0 Argon, TypeScript, Streamable HTTP, Firestore, Web Speech API | URL: https://herrington.ai/knowme/
- **Remote MCP Server & AI Agent Gateway: Programmatic Knowledge Interface** (Agentic Infrastructure & MCP): An open, public Model Context Protocol (MCP) server running in stateless Streamable HTTP mode on Cloud Run and Firebase Hosting CDN. Exposes herrington.ai's entire technical corpus, ML Goodput research papers, project case studies, and the Gemini-powered dh.sh persona as machine-callable tools for external autonomous AI agents (Muse, Instinct, Cursor, Claude Code). | Stack: TypeScript, Model Context Protocol, Streamable HTTP, Stateless Architecture, Google Cloud Run, Gemini API, TF-IDF Search, Firebase CDN | URL: https://herrington.ai/projects/remote-mcp-server/
- **Kids Country Poster Kit: School Culture Display Builder** (EdTech & Print Engineering): An interactive, kid-friendly web tool and learning studio built with my daughter Izzy to research, customize, and print high-quality school culture display projects (standard flat 22″ × 28″ poster boards) on home 8.5″ × 11″ paper with 100% black-and-white coloring line art, 9-category curriculum calibration, and voice speech coaching. | Stack: JavaScript, Tailwind CSS, CSS Paged Media, SVG Vector Graphics, Web Speech API, CUJ Framework | URL: https://herrington.ai/projects/hispanic-heritage-poster/
- **American Detail Cleaning: Commercial Facility Modernization** (Web Modernization & SEO): Full-stack modernization of a 35+ year premier commercial facility care and architectural surface restoration corporation in Washington D.C., transforming an aging, bloated WordPress setup into a high-speed, SEO-optimized, lead-converting static web platform. | Stack: Astro, TypeScript, Tailwind CSS, Local SEO & AEO, GA4 Conversion Funnels, Web Performance | URL: https://herrington.ai/projects/american-detail-cleaning/
- **Danboard: Fire TV Smart Display & Calendar** (Fire TV Smart Display): An open-source, zero-subscription smart display and family calendar dashboard engineered specifically for Amazon Fire TV and web browsers. Runs 100% standalone on device hardware with direct Google Calendar iCal sync, client-side RRULE recurrence expansion, live Open-Meteo weather, and 4K rotating landscape photography. | Stack: React, TypeScript, Vite, Fire TV, Capacitor, Android, Open-Meteo, iCal / RRULE | URL: https://herrington.ai/projects/danboard/
- **Dojo Zen: Autonomous School Intelligence** (Autonomous School Intelligence): An autonomous AI agent and anti-bloat triage pipeline replacing gamified EdTech mobile apps with direct school feed ingestion, high-severity emergency alerts, and a shared daily family briefing. | Stack: Python, FastAPI, SQLite, Semantic Triage, ClassDojo API, LLMs | URL: https://herrington.ai/projects/dojo-zen/
- **Izzyland ✨ The Candyland Adventure** (Generative AI Game): A whimsical poolside-crafted generative board game built with my daughter Izzy. Features 64 candy tiles, regional chocolate collecting across world landmarks, Gemini-generated video cutscenes, and an interactive unicorn piñata finale. | Stack: React, TypeScript, Vite, Gemini AI Video, Web Audio, Game Design | URL: https://herrington.ai/projects/izzyland/
- **In-Browser RAG & Model Context Protocol (MCP) Engine** (Edge RAG & MCP): A serverless, zero-cloud-cost client-side RAG engine and Model Context Protocol (MCP) server indexing 50+ essays, podcast transcripts, and software architectures directly inside dh.sh and local Claude Desktop environments in sub-10ms. | Stack: TypeScript, Python SSG, Inverted Index, TF-IDF, MCP Protocol, Edge AI | URL: https://herrington.ai/cujs/in-browser-rag-engine/
- **Family Schedule Helper** (Family Logistics & Scheduling): A mobile-first dispatch app for multi-caregiver families to reassign, swap, and sync school drop-offs and pick-ups across shared Google Calendars without recurrence corruption. | Stack: React, TypeScript, Vite, Node.js, Express, Google Calendar API | URL: https://herrington.ai/cujs/google-calendar-schedule-helper/
- **CUJ Engineering Framework** (Engineering Philosophy): A product-driven development philosophy and case study hub centered on Critical User Journeys (CUJs) to surgically eliminate user friction before writing code. | Stack: Product Strategy, CUJ Framework, Architecture | URL: https://herrington.ai/cujs/
- **Local Meeting Scribe** (Offline AI & Voiceprints): Air-gapped, asynchronous meeting transcription and acoustic sentiment intelligence with persistent speaker voiceprints on Apple Silicon — zero cloud token costs. | Stack: Python, Whisper, PyAnnote, WeSpeaker, Local LLMs, Apple Silicon | URL: https://herrington.ai/cujs/local-meeting-scribe/
- **Plex Watchlist Checker** (Media Automation): A secure Python utility that compares your Plex Watchlist against your server library to find missing content, generating an interactive dark-mode HTML dashboard. | Stack: Python, Plex API, HTML/CSS, FastAPI | URL: https://herrington.ai/cujs/plex-media-hub/
- **Project Catfish '99** (Automotive Restoration): A comprehensive restoration and modification project log of a 1999 4th Generation V6 Convertible Chevrolet Camaro, tracking its journey from family hand-me-down to Miami cruiser. | Stack:  | URL: https://herrington.ai/catfish
- **N12K** (AI & Search Analytics): An automated audit and evaluation suite for measuring Share of Voice (SOV) and tracking brand visibility within AI Overviews, Search Generative Experience (SGE), and LLM search rankings. | Stack: React, TypeScript, TailwindCSS, Firebase | URL: https://herrington.ai/n12k
- **Weekend Lu** (Travel Curation): A luxury resort and fashion gift shop index, reviewing boutique hotel destinations, curated retail spots, and high-end travel experiences. | Stack: HTML/CSS, JavaScript, Editorial Curation | URL: https://weekendlu.com
- **More Projects Coming Soon** (In Development): Currently designing and tinkering with decentralized agent protocols, custom compiler optimizations, and performance telemetry systems. | Stack: Rust, WASM, WebRTC | URL: https://herrington.ai/projects/