nateberkopec

Protecting Against Autonomous Agent rm -rf Commands

This document explains an approach to protecting against AI coding agents (like Claude Code and Opencode) accidentally running destructive rm -rf commands, implemented in nateberkopec/dotfiles.

Background

AI coding agents have the ability to execute shell commands, including potentially destructive ones like rm -rf. This is a known risk that has been discussed in the community (original tweet).

The implementation evolved through two pull requests:

nateberkopec

Puma JSON Logging Demo

This demo shows how to achieve JSON-formatted boot messages from Puma using existing configuration options. This is in response to GitHub Issue #3865.

Summary

Puma already supports custom log formatting via two DSL options:

1. log_formatter - A block that transforms each log message string

nateberkopec

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"
  gem "rails", "~> 8.0"
  gem "sqlite3"
end

nateberkopec

Senior Product Engineer
Job Type: Full-time
Kaysville, UT and Remote (United States Only)
Salary Range: 180-220K DOE
Who We Are:
At Bark we’re doing something special to make the digital world a safer place for
children. Our work isn't just another job; it's a chance to make a real impact on the lives
of children and families.
Imagine using cutting-edge machine-learning to empower parents to partner with their
kids, providing them with the tools and alerts they need to ensure their child's safety and

nateberkopec

function gc-ai
    # Check required dependencies
    if not command -q gum
        echo "Error: gum is not installed. Install it from https://github.com/charmbracelet/gum"
        return 1
    end

    if not command -q bat
        echo "Error: bat is not installed. Install it from https://github.com/sharkdp/bat"
        return 1

nateberkopec

#!/bin/bash

set -e

if [ $# -eq 0 ]; then
    echo "Usage: gh_watch <github-pr-url>"
    echo "Example: gh_watch https://github.com/hyfn/xpo/pull/4974"
    exit 1
fi

nateberkopec

pub   rsa2048 2025-07-05 [SC] [expires: 2027-07-05]
      3C3E54D4F0A2218E1C1AA1A2ED9299DFE432C3A1
uid           [ultimate] Nate Berkopec (Yubikey B) <nate.berkopec@gmail.com>
sig 3        ED9299DFE432C3A1 2025-07-05  [self-signature]
sig          6BF45F815F702663 2025-07-05  Nathan Berkopec (5 NFC Master) <nate.berkopec@gmail.com>
sub   rsa2048 2025-07-05 [A] [expires: 2027-07-05]
sig          ED9299DFE432C3A1 2025-07-05  [self-signature]
sub   rsa2048 2025-07-05 [E] [expires: 2027-07-05]
sig          ED9299DFE432C3A1 2025-07-05  [self-signature]

nateberkopec

Speedshop Retainer Roadmap

This is the roadmap for the Speedshop Ruby on Rails performance retainer service. It was last updated March 28th, 2025. Items are in rough priority order.

In-Progress:

1. Alerting, dashboards, key metrics, and ticket backlogs for all: We want everyone to be on the same footing with SLOs for queues and tracking our core set of 20 metrics, plus your app's specific key metrics (see next bullet), along with a ticket backlog for stuff to work on.

Upcoming:

nateberkopec

Speedshop Retainer Changelog

This is the changelog for the Speedshop Ruby on Rails performance retainer service. For what we're doing in the future, see the roadmap. This was last updated March 28th, 2025.

March 2025

1. Office Hours. You can now sign up for regular office hours, 30 minutes every 2 weeks.
2. Retainer Roadmap and Changelog. We're working on more services and extensions to the retainer service. You can keep up with stuff yet to come in the Roadmap, and stuff done already in the Changelog.
3. Free Ongoing Education/Workshops. We started a book club for The Rails Performance Apocrypha.

nateberkopec

/nix/store/9j0c1bk7rq7fkc7bcf4q25wk6rjm1z3d-gnumake-4.3/bin/make install target_prefix=
/nix/store/1qw1shw2a163h45rhr5pay488nbzfi6y-coreutils-9.0/bin/install -c -m 0755 puma_http11.so /host/nateberkopec/Documents/Code/upstream/puma/lib/puma
cp tmp/aarch64-linux/puma_http11/3.0.2/puma_http11.so tmp/aarch64-linux/stage/lib/puma/puma_http11.so
/host/nateberkopec/Documents/Code/upstream/puma/test/test_config.rb:70: warning: assigned but unused variable - bind_configuration
/host/nateberkopec/Documents/Code/upstream/puma/test/test_config.rb:71: warning: assigned but unused variable - app

ruby 3.0.2p107 (2021-07-07) [aarch64-linux]
RUBYOPT: -r/nix/store/6jdmjqw9m3n3n76z5dsig3d4anh091fm-ruby-3.0.2/lib/ruby/3.0.0/bundler/setup
                         Puma::MiniSSL                   OpenSSL
OPENSSL_LIBRARY_VERSION: OpenSSL 1.1.1l  24 Aug 2021     OpenSSL 1.1.1l  24 Aug 2021