llms.txt Is the Cheapest RAG You'll Ever Ship

My site’s chat agent answers with exact deep links to my posts - no search tool, no vector database. It reads /llms.txt at prompt time, and the whole ‘retrieval pipeline’ is one HTTP GET.

July 28, 2026 · 4 min · 700 words · David Twizer

Get iOS Push Notifications When Your Agent Finishes (or Fails)

Wire an xpander agent’s success/error webhook into hark.ryan.ceo and your phone buzzes the moment a long-running agent task finishes - no polling, no forgotten tabs.

July 27, 2026 · 4 min · 661 words · David Twizer

Two API Calls to Put an AI Agent on a Static Site

The “David’s AI” sidebar is a real xpander agent - created with one API call, streamed with another, and dropped onto a static site behind a tiny key-holding Worker.

July 26, 2026 · 4 min · 779 words · David Twizer

An Agent That Closes the Troubleshooting Loop

Automating the entire troubleshooting loop across Datadog logs and GitHub Actions. No tickets, no waiting.

April 15, 2025 · 1 min · 73 words · David Twizer

xpander.ai + OpenAI Realtime API

Real-time function calls across any system: 1st-party APIs, 3rd-party services, or custom platforms.

October 3, 2024 · 1 min · 70 words · David Twizer

xpander.ai + NVIDIA NIM

A Text-to-Action runtime that turns text inputs into tangible results with graph-driven agents.

September 16, 2024 · 1 min · 87 words · David Twizer