Apex Nexus

n8n Webhook → Telegram Dispatch

Production pattern: receive inbound JSON via webhook, filter with a local LLM call, format a rich Markdown card, and fire it to a Telegram bot.

n8n Webhook → Groq/Llama Filter → Telegram Dispatch
├── Node 1: POST /webhook/quote
├── Node 2: AI safety check (Llama 3.1)
└── Node 3: Telegram alert with structured card

Hardened Local Server Baseline

Lockdown playbook for Ubuntu self-hosted: SSH key-only auth, fail2ban with custom jails, auditd rulesets, unattended-upgrades, and headless browser sandboxing.

• ✓ SSH hardening + key rotation
• ✓ fail2ban + Cloudflare WAF integration
• ✓ auditd rules for file integrity

Tech Stack Cost Calculator

Spreadsheet → decision matrix for sizing infrastructure: API token budgets, monthly inference costs, storage egress, and break-even analysis across providers.