Nate Berkopec nateberkopec

Protecting Against Autonomous Agent rm -rf Commands

Protecting Against Agent `rm -rf` Commands

AI coding agents can run shell commands. Sometimes they run rm -rf by mistake. This deletes files forever. While of course I always read and approve all tool calls manually, by hand, and never let my agents work except under direct supervision 100% of the time, sometimes I miss things.

How It Works

Hooks catch rm -rf before it runs
Refuse the command with a clear error telling you to use trash

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:

log_formatter - A block that transforms each log message string

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:

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:

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

Office Hours. You can now sign up for regular office hours, 30 minutes every 2 weeks.
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.
Free Ongoing Education/Workshops. We started a book club for The Rails Performance Apocrypha.

	FROM ruby:3.3-slim

	RUN apt-get update \
	&& apt-get install -y --no-install-recommends build-essential \
	&& rm -rf /var/lib/apt/lists/*

	RUN gem install puma -v 6.4.2

	WORKDIR /app
	COPY config.ru puma.rb /app/

	# frozen_string_literal: true

	require "bundler/inline"

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

	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

	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

	#!/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

	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]