coenjacobs

Automating Claude Code Setup on a Headless VPS

This document describes how to automate Claude Code installation and authentication on headless VPS machines without requiring browser-based OAuth authentication.

The Problem

Claude Code's interactive mode requires OAuth authentication via a web browser. On headless VPS machines without a GUI, this creates a chicken-and-egg problem: you can't authenticate without a browser, but the machine has no browser.

While claude -p (print mode) works with just ANTHROPIC_API_KEY, interactive mode always launches an onboarding wizard that requires browser authentication.

coenjacobs

<?php

$result = wp_remote_get('yourredirectingdomain.com');

$history = $result['http_response']->get_response_object()->history;

foreach( $history as $part ) {
  echo $part->headers->getValues('location');
}

coenjacobs

<?php

class MetaChecker {
  public function checkMeta( WP_Post $post ) {
    $value = get_post_meta($post->ID, 'key_of_value_store', true);
    
    // @TODO: Do magic with $value
  }
}

coenjacobs

<?php

class Object {
    public function setup() {
         add_action('init', array($this, 'init') );
    }
}

coenjacobs

<?php

namespace CoenJacobs\StefExample\PostTypes;

abstract class AbstractType {
  public function setup() {
    // possibly some setup logic here?
  }
  
  public function register() {

coenjacobs

Keybase proof

I hereby claim:

• I am CoenJacobs on github.
• I am coenjacobs (https://keybase.io/coenjacobs) on keybase.
• I have a public key whose fingerprint is 4925 71BD 1469 C165 B383 A62A 5D7F A24B B215 0324

To claim this, I am signing this object:

coenjacobs

if ( $ip ) {
	$parts = array_map( 'intval', explode( '.', $ip ) );
	if ( 127 === $parts[0] || 10 === $parts[0]
		|| ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
		|| ( 192 === $parts[0] && 168 === $parts[1] )
	) {
		// If host appears local, reject unless specifically allowed.
		/**
		 * Check if HTTP request is external or not.
		 *

coenjacobs

#!/bin/bash
vagrant up
vagrant ssh << EOF

# If directory doesn't exist, clone the repository in ~/.dotfiles
if [ ! -d ~/.dotfiles ];
then
	git clone --recursive https://github.com/coenjacobs/dotfiles.git ~/.dotfiles
fi

coenjacobs

<?php

add_filter( 'loop_shop_columns', 'wc_loop_shop_columns', 1, 10 );

/*
 * Return a new number of maximum columns for shop archives
 * @param int Original value
 * @return int New number of columns
 */
function wc_loop_shop_columns( $number_columns ) {

coenjacobs

<?php

add_filter( 'woocommerce_get_catalog_ordering_args', 'custom_woocommerce_get_catalog_ordering_args' );

function custom_woocommerce_get_catalog_ordering_args( $args ) {
  $orderby_value = isset( $_GET['orderby'] ) ? woocommerce_clean( $_GET['orderby'] ) : apply_filters( 'woocommerce_default_catalog_orderby', get_option( 'woocommerce_default_catalog_orderby' ) );

	if ( 'random_list' == $orderby_value ) {
		$args['orderby'] = 'rand';
		$args['order'] = '';