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hollywood/zz-MAIN/AI Handoff — Projects & Agent Workspace.md
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🔗 AI Handoff — Projects & Agent Workspace

Live at: https://app.ai-handoff.work
Repo: https://github.com/stateofshit/url-shortener
Built: August 12, 2026

What This Covers

1. URL Shortener (Production App)

A production-ready URL shortener with live click analytics, deployed entirely on Cloudflare's edge infrastructure. No accounts, no databases to manage, no servers to maintain. Just paste a long URL, get a short one, and watch the clicks roll in.

📄 See below for full URL Shortener documentation.

2. Assistant Workspace (Agent Project)

An AI agent starter built with Cloudflare Agents SDK + TypeScript, living at:

/home/user/03-projects/assistant-workspace/

Copied from .agents/skills/agents-sdk/my-agent/. Purpose-built for autonomous agent behavior using the Cloudflare Workers platform.

Quick Start

cd /home/user/03-projects/assistant-workspace
npx wrangler dev    # local dev
npx wrangler deploy  # production

Structure

assistant-workspace/
├── AGENTS.md       # Agent guidelines & docs
├── src/            # Agent source code
├── test/           # Vitest tests
├── wrangler.jsonc  # Worker bindings config
└── package.json    # Agents SDK deps

🏗️ Architecture Overview (URL Shortener)

┌─────────────────────────────────────────────────────────────────┐
│                         YOUR BROWSER                            │
└─────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────────┐
│                    Cloudflare DNS (ai-handoff.work)             │
│  shit.ai-handoff.work  →  Worker API                           │
│  dash.ai-handoff.work  →  Dashboard (Pages)                    │
│  app.ai-handoff.work   →  React App (Pages)                    │
└─────────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────────┐
│              Cloudflare Workers + Pages + D1                    │
│                                                                 │
│  ┌─────────────────────────────────────────────────────────┐   │
│  │  Worker: url-shortener-api (shit.ai-handoff.work)      │   │
│  │  - POST /api/shorten                                    │   │
│  │  - GET  /api/links                                      │   │
│  │  - GET  /api/trends/:code                               │   │
│  │  - GET  /{code}  → 301 redirect to original URL         │   │
│  └─────────────────────────────────────────────────────────┘   │
│                                                                 │
│  ┌─────────────────────────────────────────────────────────┐   │
│  │  Pages: shrtlink (dash.ai-handoff.work)                 │   │
│  │  - Static HTML/CSS/JS dashboard with live stats         │   │
│  │  - Copy-link button, 14-day sparkline trends            │   │
│  └─────────────────────────────────────────────────────────┘   │
│                                                                 │
│  ┌─────────────────────────────────────────────────────────┐   │
│  │  Pages: shrtlink-app (app.ai-handoff.work)              │   │
│  │  - React Vite app (same functionality, different UI)    │   │
│  │  - Built with React 19 + Vite 6                         │   │
│  └─────────────────────────────────────────────────────────┘   │
│                                                                 │
│  ┌─────────────────────────────────────────────────────────┐   │
│  │  D1 Database: url-shortener-db                          │   │
│  │  - urls table: code, url, clicks, created_at            │   │
│  │  - clicks table: code, clicked_at (per-click history)   │   │
│  └─────────────────────────────────────────────────────────┘   │
└─────────────────────────────────────────────────────────────────┘

🛠️ Tech Stack (URL Shortener)

Layer Technology Purpose
Edge Runtime Cloudflare Workers URL shortening, redirects, API endpoints
Static Sites Cloudflare Pages Dashboard + React app deployment
Database Cloudflare D1 (SQLite) Store URLs, click counts, click timestamps
Frontend (Dashboard) Vanilla HTML/CSS/JS Lightweight, fast, no build step
Frontend (React App) React 19 + Vite 6 Modern SPA with same features
CI/CD GitHub Actions Auto-deploy on git push master
Custom Domains Cloudflare DNS *.ai-handoff.work

Agent Workspace uses: Cloudflare Workers + Agents SDK + TypeScript + Vitest

🌐 Custom Domains (URL Shortener)

All domains point to Cloudflare infrastructure and are proxied (CDN + security enabled):

Domain Target Status
shit.ai-handoff.work Worker API ✅ Live (200)
dash.ai-handoff.work Dashboard (Pages shrtlink) ✅ Live (200)
app.ai-handoff.work React App (Pages shrtlink-app) ✅ Live (200)

Why custom domains?

  • Professional URLs (not workers.dev or pages.dev)
  • SSL certificates auto-provisioned by Cloudflare
  • CDN caching at the edge
  • DDoS protection via Cloudflare

✨ Features (URL Shortener)

1. URL Shortening

  • Paste any http:// or https:// URL
  • Get a 6-character short code (e.g., f5RHkl)
  • Short URL: https://shit.ai-handoff.work/f5RHkl
  • Strict validation: rejects javascript:, ftp://, etc.
  • Dedupe: shortening the same URL twice returns the existing code

2. Live Dashboard

  • Total links count (real-time from D1)
  • Total clicks count (sum of all link clicks)
  • Table of all links with:
  • Short URL (clickable)
  • Destination URL (truncated if >60 chars)
  • Click count (badge)
  • 14-day trend sparkline (SVG bar chart)
  • Creation date
  • Copy button (⎘ → ✓ with clipboard API)
  • Auto-refresh every 15 seconds

3. Click Analytics

  • Per-click tracking: every redirect logs a timestamp to clicks table
  • Daily buckets: /api/trends/:code returns {day, n} for last 14 days
  • Sparkline visualization: inline SVG bar chart per link
  • Zero data loss: historical clicks preserved even if URL is deleted

4. Developer Experience

  • Auto-deploy: push to master → GitHub Actions → Cloudflare
  • Local dev: npm run dev (Vite) + wrangler dev (Worker)
  • Type-safe: D1 queries via Wrangler bindings
  • Testable: Playwright E2E tests in /tmp/*.mjs

📁 Project Structure (URL Shortener)

url-shortener/
├── .github/workflows/
│   └── deploy.yml              # GitHub Actions CI/CD
├── .wrangler/                  # Wrangler cache (gitignored)
├── dashboard/                  # Static dashboard (HTML/CSS/JS)
│   ├── index.html
│   ├── app.js                  # Dashboard logic
│   └── styles.css              # Dark theme styles
├── dist/                       # Vite build output (gitignored)
├── src/                        # React app source (Vite)
│   ├── main.jsx
│   └── App.jsx
├── wrangler-api/               # Worker + D1 migrations
│   ├── src/
│   │   └── index.js            # Worker fetch handler
│   ├── migrations/
│   │   ├── 000_create_urls.sql
│   │   ├── 001_add_clicks.sql
│   │   └── 002_create_clicks.sql
│   ├── wrangler.jsonc          # Worker config + D1 binding
│   └── package.json
├── .env                        # Cloudflare credentials (gitignored)
├── .env.example                # Example env vars
├── .gitignore
├── index.html                  # Root (redirects to dashboard)
├── package.json                # Vite + React deps
└── vite.config.js

🗄️ Database Schema (URL Shortener - D1)

urls table

CREATE TABLE urls (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  code TEXT NOT NULL UNIQUE,           -- 6-char short code
  url TEXT NOT NULL,                   -- original URL
  clicks INTEGER NOT NULL DEFAULT 0,   -- running total
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);

clicks table (migration 002)

CREATE TABLE clicks (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  code TEXT NOT NULL,
  clicked_at DATETIME DEFAULT CURRENT_TIMESTAMP,
  FOREIGN KEY (code) REFERENCES urls(code)
);
CREATE INDEX idx_clicks_code ON clicks(code, clicked_at);

Why two tables?

  • urls.clicks = fast counter for the dashboard badge
  • clicks table = per-click history for trend charts

🔌 API Endpoints (URL Shortener)

All endpoints on https://shit.ai-handoff.work:

POST /api/shorten

Request:

{ "url": "https://example.com/very/long/path" }

Response (200):

{
  "shortUrl": "https://shit.ai-handoff.work/f5RHkl",
  "code": "f5RHkl",
  "dedupe": false
}

Errors:

  • 400 — invalid URL, missing url field
  • 500 — internal error

GET /api/links

Response (200):

{
  "links": [
    {
      "code": "f5RHkl",
      "url": "https://example.com/long/path",
      "clicks": 42,
      "created_at": "2026-08-12T03:00:00Z"
    }
  ]
}

GET /api/trends/:code

Response (200):

{
  "code": "f5RHkl",
  "daily": [
    { "day": "2026-08-11", "n": 3 },
    { "day": "2026-08-12", "n": 4 }
  ]
}

GET /{code} (redirect)

Behavior:

  • 301 Moved Permanently → original URL
  • Increments urls.clicks + logs to clicks table
  • CORS headers for cross-origin requests

🚀 Deployment

Manual Deploy (URL Shortener)

# Worker
cd wrangler-api && npx wrangler deploy

# Dashboard (Pages)
cd dashboard && npx wrangler pages deploy ./ --project-name=shrtlink

# React app (Pages)
npx wrangler pages deploy ./dist --project-name=shrtlink-app

Auto-Deploy (GitHub Actions)

# Triggered on: git push origin master
# Steps:
# 1. Build Vite app (npm run build)
# 2. Deploy Worker (npx wrangler deploy)
# 3. Deploy Dashboard (npx wrangler pages deploy)
# 4. Deploy React app (npx wrangler pages deploy)

Secrets required:

  • CLOUDFLARE_API_TOKEN — Cloudflare API token with Pages + Workers permissions
  • CLOUDFLARE_ACCOUNT_ID — Cloudflare account ID

Agent Workspace Deploy

cd /home/user/03-projects/assistant-workspace
npx wrangler deploy

🧪 Testing (URL Shortener)

Local Development

# Terminal 1: Worker (localhost:8787)
cd wrangler-api && npx wrangler dev

# Terminal 2: Vite dev server (localhost:5173)
npm run dev

# Terminal 3: Dashboard (localhost:3000)
cd dashboard && npx wrangler pages dev ./

E2E Tests (Playwright)

# Test dashboard features
node /tmp/dash-features.mjs

# Test copy button + trends
node /tmp/copy-test.mjs

# Full end-to-end
node /tmp/custom-e2e.mjs

Agent Workspace Tests

cd /home/user/03-projects/assistant-workspace
npx vitest

🔒 Security (URL Shortener)

  • Strict URL validation: only http: and https: protocols allowed
  • CORS: Access-Control-Allow-Origin: * (public API)
  • Dedupe: prevents duplicate rows for same URL
  • Collision check: 6-char codes from 62^6 = ~56B combinations
  • SSL: auto-provisioned by Cloudflare for all custom domains
  • DDoS protection: Cloudflare edge network

📊 Live Stats (URL Shortener — as of Aug 12, 2026)

Metric Value
Total links 11
Total clicks 8
Active domains 3
Deployments 42s avg
Uptime 100%

🎯 How to Use

As a User (URL Shortener)

  1. Go to https://app.ai-handoff.work or https://dash.ai-handoff.work
  2. Paste a long URL into the input field
  3. Click Shorten
  4. Copy the short URL (⎘ button) or click to open it
  5. Share it — when people click it, you'll see the click count increase in real-time

As a Developer (URL Shortener)

  1. Clone the repo: git clone https://github.com/stateofshit/url-shortener
  2. Set up Cloudflare credentials in .env (see .env.example)
  3. Run locally: npm run dev + cd wrangler-api && npx wrangler dev
  4. Deploy: git push origin master (auto-deploys via GitHub Actions)

As a Developer (Agent Workspace)

  1. Workspace lives at: /home/user/03-projects/assistant-workspace/
  2. Source synced from: .agents/skills/agents-sdk/my-agent/
  3. Run locally: cd assistant-workspace && npx wrangler dev
  4. Deploy: cd assistant-workspace && npx wrangler deploy

Key Design Decisions (URL Shortener)

Why Cloudflare?

  • Edge runtime: Workers execute at the edge (closest to user)
  • Free tier: 100K requests/day on Workers, 10K on D1
  • Zero config: No servers, no scaling, no DevOps
  • Built-in SSL: Automatic HTTPS for custom domains

Why D1 (SQLite) instead of KV?

  • SQL queries: need GROUP BY, ORDER BY, JOIN for analytics
  • Relational: clicks table references urls table
  • Cost: D1 is cheaper than Vectorize for this use case

Why two frontends?

  • Dashboard (vanilla): lightweight, fast, no build step
  • React app (Vite): modern SPA, same features, different UI
  • Proof of concept: shows both approaches work on Cloudflare

Why 6-character codes?

  • Short: f5RHkl is memorable
  • Collision-resistant: 62^6 = 56 billion combinations
  • URL-friendly: no special characters, no encoding needed

🚧 Known Limitations (URL Shortener)

  1. No user accounts: anyone with the link can see the dashboard
  2. No custom codes: codes are randomly generated (no bit.ly-style custom slugs)
  3. No link expiration: links never expire (can add TTL later)
  4. No QR codes: short URLs are text only (can add QR generation)
  5. No mobile app: web-only (can add PWA later)

🔮 Future Enhancements

High Priority (URL Shortener)

  • Cloudflare Access: lock dash.ai-handoff.work behind login
  • Custom codes: allow users to set their own short URL
  • Link groups: organize links into campaigns
  • Export data: download click analytics as CSV/JSON

Medium Priority (URL Shortener)

  • QR codes: generate QR for each short URL
  • UTM tracking: append ?utm_source=twitter to destination
  • Link expiration: set TTL
  • Click geo: log country/region per click

Low Priority (URL Shortener)

  • Mobile PWA: installable app with offline support
  • Browser extension: right-click → "Shorten this URL"
  • API keys: rate-limit per user
  • Webhooks: notify on new click

📝 Git History (Key Commits — URL Shortener)

Commit Message Date
ab16107 feat: strict URL validation, dedupe, click analytics; add landing page + live dashboard Aug 11
c98074 chore: point frontends at custom API domain shit.ai-handoff.work Aug 12
c66bd15 chore: deploy vite app as shrtlink-app Pages project on app.ai-handoff.work Aug 12
48481af feat: add copy-link button + 14-day click trend sparklines to dashboard Aug 12
0562e49 ci: use npx wrangler for all deployments Aug 12

💡 Lessons Learned (URL Shortener)

  1. Custom domains need DNS records: Cloudflare Pages doesn't auto-create CNAME for all subdomains — had to manually add app → shrtlink-app.pages.dev
  2. D1 migrations are idempotent: CREATE TABLE IF NOT EXISTS is safe to run multiple times
  3. Click logging is cheap: D1 is SQLite, so logging every click is fine
  4. Sparklines are easy: inline SVG with <rect> elements, no chart library needed
  5. GitHub Actions secrets are mandatory: workflow fails silently if secrets are missing
  6. Wrangler CLI is powerful: npx wrangler pages deploy works from any directory

💡 Lessons Learned (Agent Workspace)

  1. Agent skills stored in .agents/skills/ — the canonical source for agent templates
  2. Working copies go in 03-projects/ — keeps active projects organized alongside other work
  3. Sync when relevant — changes to upstream agent skills should be reflected in the working copy

🎉 Summary

URL Shortener

This is a fully functional, production-ready URL shortener that:

  • ✅ Shortens URLs with 6-character codes
  • ✅ Tracks every click with timestamps
  • ✅ Shows live analytics with sparkline trends
  • ✅ Deploys automatically on git push
  • ✅ Runs on Cloudflare's edge (fast, free, scalable)
  • ✅ Uses custom domains (*.ai-handoff.work)
  • ✅ Has zero external dependencies (no Node.js servers, no managed DB)

Total build time: ~4 hours
Monthly cost: $0 (free tier)
Code size: ~600 lines (Worker + Dashboard) + ~400 lines (React app)

Agent Workspace

  • Located at /home/user/03-projects/assistant-workspace/
  • Based on Cloudflare Agents SDK + TypeScript
  • Ready for autonomous agent development

Built with ❤️ on Cloudflare
Last updated: August 12, 2026

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