Hi, I'm Sam. I design and build thoughtful tools with AI.

I ship agentic workflows, automations, and full-stack applications. 15 years across ops and software, with a bias for measurable impact, guardrails, and fast iterations.

136% ↑ leads

45% lower CPL

AI-assisted ads + automated funnel tracking

100+ hrs/mo saved

Manual work replaced

CustomGPT deliverables + agentic workflows

6-figure spend cut

In-house automation

Replaced vendor stack with internal tools

Sam Holstein

Projects

Case studies for agentic workflows, migrations, and shipped products.

PromptBind

macOS AI Utility

Assign shortcuts to multi-step LLM workflows so you can trigger prompt sequences instantly.

BestPromptIdeas.com

AI Prompt Library

Searchable prompt library with web, Chrome, and iOS clients that stay in sync.

ReaderPulse.io

Manuscript Feedback

Structured beta-reader workflows that collect and analyze manuscript feedback at scale.

How I work

Systems-first: instrument first, define success, plan in small steps, then implement with tight feedback loops.

Step 1

Instrument the current state

Capture reporting first so we know the baseline; no changes until we can see the system clearly.

Step 2

Define success from data

Use those reports to agree on what good looks like—targets, thresholds, and checks.

Step 3

Map and plan

Diagram the workflow or software surface, then create a small, iterative, low-cost plan.

Step 4

Implement

Ship the plan with tight loops and instrumentation to validate each step.

Skills

Agentic workflows, automation, and systems skills that ship production-ready outcomes.

AI Engineering & Agentic Development

LLM applications Agentic workflows Prompt engineering Custom GPTs RAG OpenAI Agent Builder AI policy and governance design Gemini Microsoft Copilot

Designing agentic systems with guardrails, evals, and governance.

Automation & Systems Engineering

n8n Zapier Make ETL pipelines HubSpot Data normalization API integrations Process automation CRM architecture

Event-driven orchestration with retries, idempotency, and clean system writes.

Software Engineering

Python TypeScript Node.js React Express Rust Data modeling CLI tools Supabase PostgreSQL MongoDB Swift UI/UX

Full-stack delivery: services, CLIs, data models, and UI polish.

Web Architecture

WordPress Squarespace Joomla Plugin auditing & security GA4 Tag Manager SEO/GEO

Hardened publishing stacks with analytics and secure plugins.

Infrastructure & Deployment

Vercel Supabase Google Cloud Cloudflare GitHub DNS SendGrid Mailgun

Edge deploys, auth/storage, caching, and dependable email delivery.

Product, GTM & Operations

Technical scoping Requirements translation Documentation Analytics instrumentation Marketing operations Funnel reporting Campaign automation

Shipping with stakeholders: scope, measure, and operationalize.

Books

Three titles on writing, publishing, and digital business. Browse highlights here.

Mastering Minimalism cover

Mastering Minimalism

Published: Released December 2023

The Ultimate Guide to the Minimalist Lifestyle

“This is absolutely one of the best books I have ever read and I have read so many! ... I cannot recommend this book enough! Thank you so much Megan!”
— Ryan
Work Less, Finish More cover

Work Less, Finish More

Published: Released November 2020

Productivity Lessons on How to Spend Less Time Working and Get More Done

“I've read a number of 'productivity and procrastination solution' self-help books over the years and this one is beautifully clear, short and concise. It's among my favorites as it's very easy to put into effect.”
— NCC
iPhone App Design for Entrepreneurs cover

iPhone App Design for Entrepreneurs

Published: Released March 2019

Find Success on the App Store Without Coding

“Idea to App was a phenomenal read. The information that was provided can serve as a very well written guide for any inexperienced entrepreneur. It touched on nearly every aspect that must be considered while developing an app, and that has allowed me to make better decisions in my company.”
— Nate Grose