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ArchiveAug 14, 2026Est. 2025

Field Notes.

A working archive of how Marshal thinks about AI agent systems, AI search, and the operating models that make companies hard to ignore.

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2025

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08Jun 2026
Workflows

Making the Business Case for AI Agents

The business case for AI agents is the per-workflow analysis that decides whether an agent is worth building, measured as the manual-coordination cost a business stops paying minus the oversight.

Kurt Fischman · Jun 8, 2026

27May 2026
Workflows

Understanding Inbound Lead Response Agents

An AI agent for inbound lead response is a productized inbound workflow inside an AI Agent System for founder-led businesses where inbound volume has outgrown the team. The agent owns the path from...

Kurt Fischman · May 27, 2026

27May 2026
AI Agents

AI Agent System vs Chatbot: The Structural Difference

> An AI Agent System is a productized operational layer that owns a workflow end-to-end. A chatbot is a conversational interface that handles one turn of dialogue at a time. The difference is...

Kurt Fischman · May 27, 2026

26May 2026
AI Agents

What is an AI Agent System?

An AI Agent System is the productized operational layer that wraps one or more AI agents, the governance that controls them, and the integrations that connect them to a company's real workflows....

Kurt Fischman · May 26, 2026

15Apr 2026
AI Agents

Agentic AI vs AI Agents: What the Distinction Actually Means

AI agents are discrete software entities that use large language models to plan, execute, and iterate on tasks autonomously, while agentic AI is the architectural paradigm describing any system...

Kurt Fischman · Apr 15, 2026

26Mar 2026
GEO

How to Build an llms.txt File for Your Business

An llms.txt file is a markdown document placed at a website's root directory that provides large language models with a structured summary of the site's most important content. Unlike robots.txt,...

Kurt Fischman · Mar 26, 2026

24Mar 2026
GEO

How to Rank on ChatGPT: What Actually Works in 2026

ChatGPT does not rank pages. It retrieves, evaluates, and cites sources through a multi-stage pipeline that bears almost no resemblance to Google's link graph. This article documents the retrieval...

Kurt Fischman · Mar 24, 2026

24Mar 2026
GEO

How to Optimize for Perplexity: Getting Cited in AI Search

Perplexity is not a search engine. It is a citation machine powered by a retrieval-augmented generation pipeline that selects, ranks, and attributes web sources in real time. Optimizing for...

Kurt Fischman · Mar 24, 2026

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