// AI Engineering Hub · Java Edition

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Three interconnected resources — from mastering Claude 4 internals to running a fully automated enterprise team. All updated for June 2026.

✓ ALL PAGES UPDATED JUNE 2026 — Claude 4 · Cursor 3.x · MCP 2025-06-18 · Spring AI 1.1

Combined Progress

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01 — LEARN

📚

AI Engineering
Mastery Plan

12 weeks. Claude 4 adaptive thinking, Cursor 3.x Cloud Agents, MCP 2025-06-18, production RAG (contextual retrieval, GraphRAG), multi-agent systems, Spring AI 1.1. Plus 2026 interview prep.

Progress

Phase 0 · Claude 4 Models, Cursor 3.x, MCP 2025→

Phase 1 · Adaptive Thinking, 1-hour Prompt Cache→

Phase 2 · Contextual Retrieval, GraphRAG, RAGAS→

Phase 3 · Multi-Agent, A2A, Computer Use→

🎯 2026 Interview Prep — real questions→

Open Plan → 0 / 0 tasks

02 — APPLY

🔧

Team AI Workflows

Daily team workflows with 50+ copy-paste prompts — all tuned for minimal token use. TDD pipeline, unit tests, architecture, Cursor Memories, Confluence MCP 2025-06-18. New: ⚡ Token Efficiency tab.

Progress

Requirements → Code (TDD pipeline)→

Unit Testing · JUnit 5 + Mockito prompts→

Multi-Repo + Confluence MCP 2025-06-18→

⚡ Token Efficiency — 9 rules, 6 sample prompts→

Open Workflows → 0 / 0 tasks

03 — AUTOMATE

🤖

Enterprise AI Autopilot

Zero-prompt automation for large teams. Teams messages → Jira tickets. PRs → auto-reviewed. ST/SIT runs itself. 11 roles covered. Live dashboard. Built on MCP 2025-06-18 + Spring AI 1.1.

Progress

8 Zero-Prompt Autopilot Workflows→

AI Playbook: All 11 Roles (PO, BA, Dev, QE...)→

ST / SIT Automation Suite + prompts→

Live Team Dashboard (auto-updates)→

Open Autopilot → 0 / 0 tasks

Token Efficiency — June 2026

Use AI without burning budget

A 6-person team cut Claude spend from $2,400/month to $680 with these techniques. All apply to every page in this hub.

$1/$5

Route to Haiku 4.5

Classification, routing, ticket enrichment, build diagnosis — use the cheapest model. 3x cheaper than Sonnet.

↑ 67% saving on classification

~90%

Prompt caching — 1h TTL

Large system prompts cost ~90% less when cached. 1-hour TTL in 2026 keeps long agent sessions warm.

↑ 90% on cached input tokens

75%

Execution-focused prompts

"List 3 issues as: ISSUE|LINE|FIX" generates 5x fewer tokens than "Please provide a comprehensive review..."

↑ 60–75% on output tokens

50%

Batch API for offline work

All non-interactive tasks (nightly summaries, bulk analysis, doc generation) → Batch API, same models, half price.

↑ 50% on async workloads

20×

@file not @Codebase

When you know the file, use @file. @Codebase loads 5–20 files via semantic search — 20x more tokens than a targeted @file reference.

↑ 5–20x per targeted query

40%

Adaptive thinking, effort:low

Simple tasks at effort:low skip thinking entirely. Old budget_tokens allocated tokens even for trivial queries. Now deprecated on Sonnet 4.6+.

↑ 30–40% on thinking tokens

Full token efficiency guide with sample prompts, .cursorignore template, .cursor/rules output-style template, and session management habits — see the ⚡ Token Efficiency tab in Team Workflows.

Static Website Hosting

Host these pages on any server

All 4 HTML files are fully static — no backend needed. All state is in localStorage.

🐳 Nginx in Docker RECOMMENDED

# File structure (static site) ai-hub/ ├── index.html ├── mega_ai_engineer_plan_2026.html ├── team_ai_workflows.html ├── enterprise_ai_autopilot.html └── docker-compose.yml

# docker-compose.yml version: '3.9' services: ai-hub: image: nginx:alpine ports: - "80:80" volumes: - ./:/usr/share/nginx/html:ro restart: unless-stopped

docker compose up -d # Access at http://your-server-ip

☁️ Cloud Platforms 1-CLICK

Push 4 files to GitHub → connect to any platform. Free static hosting everywhere.

Cloudflare PagesFree · fastest CDN NetlifyFree · drag+drop VercelFree · instant RenderFree static sites RailwayEasy deploy AWS S3 + CF~$1/month

💻 Local / Raspberry Pi QUICKEST

# Python (usually already installed) python3 -m http.server 8080 # OR: npx serve . # OR: Docker + nginx above on port 80 # Access: http://YOUR_IP:8080

🌐 Add HTTPS

sudo apt install certbot nginx sudo certbot --nginx -d yourdomain.com # Auto-renews every 90 days # OR: Cloudflare proxy (zero config)

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Use AI without burning budget

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