Building & Product
How founders use AI for AI Agents
The resources behind 15 questions founders actually ask, then the questions themselves, each with a straight answer.
On the AI map, 29 October 2026 Decision models Coding agents Agents that do tasks for you AI browsers No-code automation with AI steps
What founders use for ai agents, ranked by how many answers lean on it.
-
Video
Andrej Karpathy: Software Is Changing (Again)
Y Combinator / Andrej Karpathy
-
Video
AI Agents, Clearly Explained
Jeff Su
-
Video
Andrew Ng Explores the Rise of AI Agents and Agentic Reasoning (BUILD 2024 keynote)
Snowflake BUILD / Andrew Ng
-
Video
What are AI agents? (AI Agents for Beginners)
Microsoft
-
Video
AI Agents Explained: A Comprehensive Guide for Beginners
Alfie Marsh
-
Video
AI Agents + LLM Reasoning: Transforming Autonomous Workflows
IBM Technology
-
Video
What's next for AI agentic workflows
Sequoia Capital / Andrew Ng
-
Video
From Zero to Your First AI Agent in 25 Minutes (No Coding)
Futurepedia
-
Video
You're Not Behind (Yet): How to Build AI Agents in 2026 (no coding)
Futurepedia
-
Video
Build & Sell n8n AI Agents (8+ Hour Course, No Code)
Nate Herk
-
Video
N8N Full Tutorial: Building AI Agents in 2025 for Beginners
AI Foundations
-
Video
Agentic AI Frameworks Explained: Workflows, Multi-Agent, & Production
IBM Technology
-
Video
Why AI evals are the hottest new skill for product builders
Lenny's Podcast (Hamel Husain & Shreya Shankar)
- The foundational explainer that makes the attack click in 15 minutes. simonw.substack.com Video Prompt injection explained, with video, slides, and a transcript Simon Willison
-
Video
Simon Willison on Industry's Tardy Response to Prompt Injection
Simon Willison
-
Video
Model Context Protocol (MCP), Clearly Explained (Why it Matters)
Greg Isenberg
-
Video
Harrison Chase on Deep Agents, LangSmith, and Earning Trust
NVIDIA AI Podcast (Harrison Chase)
-
Video
Andrej Karpathy: From Vibe Coding to Agentic Engineering
Sequoia Capital (Karpathy, Stephanie Zhan)
- YC's founder-angle interview: what agentic coding means for startups. ycombinator.com Video Inside Claude Code with its creator Boris Cherny Y Combinator
-
Video
Simon Willison: Engineering practices that make coding agents work
The Pragmatic Summit (Simon Willison)
- The episode that defined the category thesis; 300 potential billion-dollar companies. ycombinator.com Video Vertical AI Agents Could Be 10X Bigger Than SaaS Y Combinator Lightcone (Garry Tan, Jared Friedman, Harj Taggar, Diana Hu)
- The earlier YC talk with the playbook for picking your vertical. ycombinator.com Video Why Vertical LLM Agents Are The New $1 Billion SaaS Opportunities Y Combinator
-
Video
Simon Willison and swyx: The State of AI
Simon Willison & swyx
The questions
What actually is an AI agent, in plain language?
An AI agent is software that uses an AI model as its brain to pursue a goal: it plans the steps, uses tools (your email, browser, spreadsheets, code, APIs), ...
Why would a founder use agents instead of a chatbot or automation?
Chatbots answer questions and classic automation follows fixed if-this-then-that rules; both break the moment a task needs judgment. Agents sit in between: t...
What real tasks are founders delegating to agents today?
Founders are handing agents inbound sales and lead qualification, customer support, competitor and market research, meeting prep and follow-ups, content draf...
How do I build my first agent without being technical?
Start with the assistant you already pay for: Claude and Tasks in Gemini run a plain-English job on a schedule. To connect several apps, use Zapier Agents or...
Which platform or framework should I build my agents on?
Match the tool to who is building. Non-technical founders should start no-code (Zapier Agents, Lindy, n8n) and only graduate when they hit a wall. If you hav...
How much do AI agents cost to run, and how do I keep the bill under control?
Token prices for equivalent quality fall roughly 10x a year, yet agent bills keep rising because agents burn about 50 times the tokens of a chat: every step ...
How do I test an AI agent and know when it's reliable enough to trust?
You test agents with evals: a set of real tasks plus grading logic, run repeatedly because the same input can produce different outputs. Start embarrassingly...
What can go wrong when an agent acts on my behalf, and how do I keep it safe?
The core risk is Simon Willison's lethal trifecta: an agent that reads your private data, sees untrusted content (any email or web page) and can communicate ...
What is MCP, and why does it matter for my agents?
MCP (Model Context Protocol) is an open standard, started by Anthropic in late 2024 and since adopted by OpenAI and Google, that works like a USB-C port for ...
Should I build one agent or a team of agents working together?
Start with one. The famous industry debate (Cognition's "Don't Build Multi-Agents" vs Anthropic's multi-agent research system) actually agrees on the fundame...
Can coding agents like Claude Code actually build my product?
Yes, further than most founders expect: teams like Every ship multiple products with engineers writing almost zero code by hand, and 80-90% of Claude Code it...
Is there a real startup opportunity in building vertical AI agents?
Yes, and it may be the biggest one of this cycle: YC's partners argue vertical AI agents could be 10x bigger than SaaS because they tap labor budgets, not so...
How should I price a product built on AI agents?
Per-seat pricing breaks when your product replaces labor instead of assisting it: agents don't have seats. The market is converging on usage and outcome pric...
Why do most AI agent projects fail, and what do the winners do differently?
MIT's much-cited finding is that 95% of enterprise AI pilots deliver no measurable ROI, and the cause is rarely the model: it's missing context, no workflow ...
How do I give my agent the right context and memory so it stops forgetting?
Agents fail less because the model is dumb and more because its context window is stuffed with the wrong things: performance measurably degrades as context g...
Also in Starting Up
The same ground, over in Build the product, our Starting Up track.
eChai Partner Brands
The partnership →