Brett Kelly brettkelly

See more of my writing here.

In this post, I'll start from scratch and build up to OpenClaw's architecture step by step, showing how you could have invented it yourself from first principles, using nothing but a messaging API, an LLM, and the desire to make AI actually useful outside the chat window.

End goal: understand how persistent AI assistants work, so you can build your own (or become an OpenClaw power user).

First, let's establish the problem

When you use ChatGPT or Claude in a browser, there are several limitations:

Inspecting HTTPS (TLS, SSL) certificates from the command line

I needed to inspect an HTTPS site's current certs and wanted to do it from the command line. Here are a couple of commands that I used that worked quite well.

With nmap

nmap -p 443 --script ssl-cert [hostname]

tmux Cheat Sheet

Table of Contents

General Usage
Shortcuts
Commands
Scripting tmux
Configuring tmux

	window.addEventListener( 'DOMContentLoaded', function() {

	var $map = $( '.jet-map-listing' );

	if ( ! $map.length ) {
	return;
	}

	$map.on( 'jet-filter-custom-content-render', function( event, response ) {

	<?php

	add_action('rest_api_init', 'getawayRegisterRoute');

	function getawayRegisterRoute() {
	register_rest_route( 'getaway/v1', 'data', array(
	'methods' => WP_REST_SERVER::READABLE,
	'callback' => 'getawayDataResults'
	));
	}

	#!/usr/bin/env python3

	# !! NOTE - this script is no longer maintained... please see the repo for further
	# updates: https://github.com/jheddings/notes2notion

	# this script attempts to migrate from Apple Notes to Notion while retaining as
	# much information and formatting as possible. there are limitations to the
	# export data from Notes, so we try to preserve the intent of the original note.

	# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,

	/* I'll put here different examples of dynamic query for Oxygen repeater :
	* - Use one of the following repeater_dynamic_query definitions
	* in code block just BEFORE the repeater
	* - Set the repeater custom query settings : post type, number of posts, order...
	* - Add the remove_action in a code block AFTER the repeater
	*/


	/****************************************************************************************************
	* Display related posts for any CPT with taxonomy:

	<?php

	add_action( 'astra_content_loop', 'custom_post_type_loop_callback' );
	function custom_post_type_loop_callback(){
	if( "movies" == get_post_type() ) {
	remove_action( 'astra_template_parts_content', array( Astra_Loop::get_instance(), 'template_parts_default' ) );
	remove_action( 'astra_template_parts_content', array( Astra_Loop::get_instance(), 'template_parts_post' ) );
	if ( is_singular( "movies" ) ) {
	add_filter( 'astra_post_link', '__return_false' );
	}

	<?php
	function example_ajax_enqueue() {

	// Enqueue javascript on the frontend.
	wp_enqueue_script(
	'example-ajax-script',
	get_template_directory_uri() . '/js/simple-ajax-example.js',
	array( 'jquery' )
	);

	RewriteEngine On
	RewriteBase /
	RewriteRule ^index\.php$ - [L]
	# add a trailing slash to /wp-admin
	RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
	RewriteCond %{REQUEST_FILENAME} -f [OR]
	RewriteCond %{REQUEST_FILENAME} -d
	RewriteRule ^ - [L]
	RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content\|admin\|includes).*) $2 [L]
	RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]