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Claude Model Reference

Last updated: April 30, 2026

Notes

To switch models in Claude Code, use the /model command with your desired model ID.
- Example: /model claude-opus-4-6 (Opus 4.6, 200k context)
Info was LLM-generated.

AGENTS.md Best Practices for AI Coding Assistants: Comprehensive Guide

AGENTS.md has emerged as the de facto open standard for guiding AI coding assistants, now adopted by over 20,000 repositories and formalized in August 2025 through collaboration between OpenAI, Google, Cursor, Factory, and Sourcegraph. This file acts as a "README for machines"—providing structured, technical context that helps AI assistants write better code from the start. For Python + AWS + Terraform projects, a well-crafted AGENTS.md dramatically reduces friction, ensuring generated code follows your conventions, uses the right tools, and adheres to security requirements.

What is AGENTS.md and why it matters

AGENTS.md is a dedicated Markdown file that complements, not replaces, README.md. While README targets human developers with project overviews and quick-start guides, AGENTS.md contains detailed technical instructions specifically for AI coding agents. Think of it as onboarding documentation for an AI team member: ex

Alpine Linux on UTM: Automation Guide

A comprehensive guide to automating Alpine Linux VMs on UTM for rapid deploy-test-destroy workflows.

Document Information

Abstract: This guide documents Alpine-specific discoveries and workflows for UTM automation, focusing on P2P protocol testing, rapid iteration, and minimal resource overhead.

UPDATE: I've built a full Web UI to automate and manage this! Check out the complete, interactive version of this setup (which now also includes a 1-click Privacy VPN mode using Unbound + DNSCrypt + WARP) here: 1999AZZAR/doh-switcher

This guide explains how to set up DNS over HTTPS (DoH) on a Linux system using cloudflared. DoH ensures that your DNS queries are encrypted and secure, protecting your online privacy and preventing third-party monitoring of your internet activity.

Setting Up DNS over HTTPS (DoH) Using `cloudflared`

Installing OpenBSD 7.3-current on a VisionFive2

Here are some concise instructions for getting OpenBSD 7.3-current running on a StarFive VisionFive 2 (v1.3B, though from other reports referenced below, it sounds like the v1.2 boards can also be made to work).

You will need:

An SD card of at least 1GB
An eMMC module attached to the board (though see below for a variation that should work to install directly to sd card)
Internet access
A USB TTL serial adapter that supports 3.3V (some of these support multiple voltages, but if yours only supports other voltages and not 3.3 it will either not work or damage your board!)

Mount Destination partition on sdcard

lsblk -f
sudo fdisk /dev/sda
sudo mkfs -t ext4 /dev/sda1
sudo mount -t auto /dev/sda1 /mnt
cd /mnt
sudo su

mkdir -p ./etc/apk

Initial code and inspiration from:

Prepare the PI (using Raspberry PI OS Lite as base):

$ curl -sL https://deb.nodesource.com/setup_14.x | sudo bash -
$ sudo apt update && sudo apt dist-upgrade
$ sudo apt install nodejs

$ sudo apt install --no-install-recommends chromium-browser

Build a fedora kernel rpm

Rationale:

I need a custom kernel (because sound won't work with vanilla)
I want to use Fedora Atomic Host
The only way to override the kernel with Fedora Atomic Host is to install a kernel package using ostree-rpm
I have a metered network connection and want to avoid downloading the kernel sources too many times
The powerful machine that can build the kernel is nor running Fedora or Red-hat based system with rpmbuild available

	package main

	import (
	"fmt"
	"log"

	"github.com/miekg/dns"
	)

	// adapted from https://gist.github.com/walm/0d67b4fb2d5daf3edd4fad3e13b162cb

	<?php

	if (!isset($_GET['ILoveMautic'])) {
	echo 'The secret phrase is wrong.';
	die;
	}

	$link = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
	$allowedTasks = array(
	'cache:clear',