Insights

How I Built My Second Brain

I spent 50 hours building an AI agent system. Then I scrapped it and built a personal operating system with Obsidian + Claude Code in one night.

Maciek Marchlewski

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Mar 29, 2026

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15

Agent OS Mistakes: 7 Architecture Errors That Kill Your AI Agent System

Most AI agent deployments fail because of architecture, not tools. Here are 7 Agent OS mistakes that kill performance, and how to avoid each one.

Maciek Marchlewski

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Mar 2, 2026

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21min

How to Build an Agent OS for Your GTM Team (Step-by-Step)

A step-by-step guide to building a custom Agent OS for your B2B go-to-market team. From audit to deployment in 8-12 weeks, with real cost breakdowns.

Maciek Marchlewski

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Mar 2, 2026

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23min

The GTM Engineer: Why Every B2B Company Needs an AI Agent Architect

The GTM Engineer is the fastest-growing role in B2B. Learn what they do, why you need one, and how to get the capability without the full-time hire.

Maciek Marchlewski

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Mar 2, 2026

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21min

How to Train an AI Agent on Your Ideal Customer Profile

How to train an AI agent on your ICP for B2B lead generation. The 4-layer framework covering firmographic, technographic, behavioral, and intent signals that drive qualified leads.

Maciek Marchlewski

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Mar 2, 2026

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27min

Mastering Marketing Operations

Wondering how to effectively manage your marketing strategies and responsibilities?

Maciek Marchlewski

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Mar 23, 2024

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5 min

Agent OS for GTM Teams: How AI Agents Run Your Entire Revenue Motion

An Agent OS unifies your entire GTM motion under one intelligent system. How B2B teams are replacing fragmented tool stacks with AI-powered go-to-market operations.

Maciek Marchlewski

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Mar 2, 2026

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26min

Revenue Operations + AI Agents: The New Playbook

Revenue operations AI agents are transforming how B2B teams run marketing, sales, and customer success. The practical playbook for building an AI-augmented RevOps stack.

Maciek Marchlewski

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Mar 2, 2026

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23min

The Future of AI in B2B Revenue Operations: From Alignment to Acceleration

By 2025, 75% of the highest-growth B2B companies will have a RevOps model in place.

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Feb 9, 2025

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10 min

How AI Is Replacing Marketing Automation Workflows

Marketing automation built on static rules is becoming obsolete. Learn which 5 workflows AI agents are replacing, how the shift works, and what MarketingOps pros need to do now.

Maciek Marchlewski

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Mar 2, 2026

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22min

5 AI Lead Generation Workflows That Actually Convert

Discover 5 proven AI lead generation workflows that drive real conversions. Cold outbound, intent-based targeting, multi-channel, re-engagement, and inbound qualification.

Maciek Marchlewski

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Mar 2, 2026

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21min

The Agent OS Tech Stack: Tools, Architecture, and What to Spend

The complete Agent OS tech stack for B2B go-to-market teams. Which tools for each layer, realistic costs by business size, and the architecture that ties it together.

Maciek Marchlewski

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Mar 2, 2026

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26min

The Agent OS Tech Stack: Tools, Architecture, and What to Spend

The complete Agent OS tech stack for B2B go-to-market teams. Which tools for each layer, realistic costs by business size, and the architecture that ties it together.

Maciek Marchlewski

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Mar 2, 2026

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26min

Agent OS vs. Marketing Automation: Why Rules-Based Systems Are Obsolete

Marketing automation runs on static rules. An Agent OS runs on intelligence. Compare the two approaches and see which fits your B2B go-to-market in 2026.

Maciek Marchlewski

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Mar 2, 2026

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21min

What Is an Agent OS? The Operating System for AI-Powered Go-to-Market

An Agent OS is a custom-built system of AI agents that runs your entire go-to-market motion. Learn what it is, how it works, and why B2B teams are adopting it.

Maciek Marchlewski

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Mar 2, 2026

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25min

AI Sales Agent for Small Business: Is It Worth It?

AI sales agent for small business: real costs, realistic results, and when it makes sense. Full breakdown of the $500-800/month setup that generates qualified B2B leads.

Maciek Marchlewski

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Mar 2, 2026

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22min

How Long Does It Take for AI Lead Gen to Start Working?

AI lead generation timeline explained: from setup to first results. Week-by-week breakdown of what to expect, what slows you down, and when qualified leads start flowing.

Maciek Marchlewski

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Mar 2, 2026

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23min

What Does an AI Sales Agent Actually Cost? (Full Breakdown)

What does an AI sales agent cost? Full breakdown of platform fees, infrastructure, setup, and total cost of ownership compared to hiring human SDRs.

Maciek Marchlewski

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Mar 2, 2026

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15min

The Year of Data Gravity

The Year of Data Gravity—Unlock the power of unified ecosystems, composable stacks, and strategic data integration.

Maciek Marchlewski

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Dec 7, 2024

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8 min

The Role of Data and Analytics in Marketing Operations: How to Leverage Insights for Success

In today's digital era, marketing operations are evolving at warp speed. Imagine having the power to decode your audience's desires and drive marketing success with pinpoint accuracy. It's all possible with data and analytics.‍

Maciek Marchlewski

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Mar 1, 2024

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12 min