Field Notes

Stories, ideas, and lessons from building an AI-era business.

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Teresa Torres's AI Evals

Product Evals have been a popular topic on twitter- and it’s mostly from Hamel and Shreya marketing their Maven course- so i wasn’t surprised that …

Rightjoin's first user from 2 years back resubscribes

Seeing an early customer come back after two years is one of the most validating moments for a solo founder. Yesterday, one of my first users from the rightjoin …

Talentprism feature update

TalentPrism is an AI-powered candidate engagement platform that creates a compounding data flywheel for recruitment agencies. Rather than requiring deep ATS …

Persistence

Saw this line on Projection Lab’s HN post after reading 1M ARR <3 There are loads of people out there smarter than me. The willingness to doggedly show …

Choosing priorities

It becomes apparent once you have kids that you don’t have time for everything you want to do - something I took for granted in my 20s. It took me almost …

Signed up Kwindla's Voice AI course

A lot of the material seems to be an overlap with the excellent Voice AI and Voice Agents that they released a while back. Fwiw, the guide itself is great …

Relatable AI Companions

I am listening to an Every podcast with the founders of Tolans - an AI alien that users interact with to discuss…life. This is a hard AI engineering …

Venture hypothesis test

Venture Hypothesis Test for your Business Idea Develop a clear venture hypothesis to help distil your idea into a business. lossfunk slides RightJoin AI Venture …

The Great Marketing Hurdle

That’s some tweets from Danny Postma and just throwing my thoughts into this note. People hate marketing sales so much that just talking about your …

Idea - Synthetic Surveys

So this idea’s been bouncing around in my head for a while - just got sparked again watching Every’s latest video about this product Valley that …

AI Engineering Evals 101

Look at your data. Create a data annotation interface to add free-form notes. this forces you to get close to the data Annotate until you feel you’re not …

Idea- AI to prompt humans

Some verison of this has been rattling around in my head for a while. AI is a great sparring partner, better than a one-sided internal monologue and …

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Supercharging Claude Code with Git Worktrees and Docker

I’ve been using Claude Code extensively for the past few months, and I stumbled onto a workflow that completely …
productivity

Pytorch ad Resource Accounting

Some back-of-the-envelope math for training Question: How long would it take to train a 70B parameter model on 15T …
llms

Tokenization

Tiktokenizer is a handly website to see how different models tokenize strings. Tokenizers Character tokenization …
llms

Language Modeling from Scratch

Introduction I’ve had this urge to go down the bare metal of LLMs, and channeling that with catching up on a some …
llms

What I'm reading

Reading List Created: 2025-06-16 00:00:00 Agents 12 Factor Agents- …
reading-list

AI for the Staffing Industry- SIA 2025 Recap by Haley Marketing

- Key Takeaways from SIA Executive Forum 2025 This webinar discusses insights from the Staffing Industry Analysts (SIA) …
business

Building realistic voice interactions with voice AI

Content Messy. A lot of parameters to tune to cater to a variety of end user conversation styles. Here is some of the …
LLM
MCP Deepdive

MCP Deepdive

MCP is an open protocol that revolutionizes how AI applications and agents interact with tools and data sources. …
AI

Note Taking System Guide

Note Taking System Guide Introduction Managing personal knowledge and content effectively requires a well-structured …
productivity

Rebuilding Rightjoin

Rightjoin began as an automated interviewing tool designed to help recruiters pre-qualify candidates without spending …
business

Making a Good LLM - Tom Lu from CHAI

Video Information Source: https://www.youtube.com/watch?v=PKOTeX-pXZs Date Processed: 2025-02-07 Audio File: …
content-summary

Building an AI-Powered YouTube Note-Taking System

In the age of AI and abundant video content, being able to efficiently process and retain information from YouTube …
productivity

Hosting Multiple Apps on One Droplet

When running multiple applications on a single server, proper configuration is essential to avoid conflicts and ensure …
deployment

Deploying a Django app with Kamal

Deployment Guide Setting Up Start from a boilerplate - don’t reinvent the wheel. Clone repo from github. Use …
deployment

Enterprise Sales

Sales Funnel Here is a typical sales funnel Prospecting Outreach Qualification Pricing Closing Implement Prospecting …
startups

Marketing for solopreneurs

Problem selection Marketing starts with product and pain point. Checklist before starting to build a product: -1 major …
startups

On Focus

We all have the same 24 hours. The question isn’t how to fill them—it’s how to make them count. Most people …
startups

A good cold email

Cold emailing is a slightly different skill than writing given the target audience and the time consttraing to capture …
marketing

On Intensity

Habits to live by Ship every 2 days. Anything that ships should provide immediate value to user. If not immediate, break …
startups

Business Books

Business Buy Back Your Time, by Dan Martell Business Million Dollar Weekend, by Noah Kagan Business Rework, by Jason …
saas
Understanding the Needs Stack

Understanding the Needs Stack

Charlie is a business owner, and he frequently needs to hire employees. But posting on job boards, screening …
saas
It took me 5 mins to launch this site!

It took me 5 mins to launch this site!

I share how I launched this Hugo site in 5 mins, invariably for my future self when I get around to doing it again after …
blog

https://x.com/chrisbarber/status/1946958121278304408?t=xWkuyf8Y_U8NF2FtmuFekA&s=08--- author: “Sangy” title: …