---
title: "Kevin Hunt · kev.in"
description: "Kevin Hunt — CTO of Deep Fathom and maker of small, useful apps. Writing about AI agents, engineering leadership and flying machines."
author: "Kevin Hunt"
canonical: "https://kev.in/"
---

# Kevin Hunt

Kevin Hunt. CTO of Deep Fathom. On the side I make small, useful apps at Rival Bear. I've been shipping software since dialup, and now I'm writing about agents, leadership and flying machines.

## Latest writing

- [How to limit users to one vote per IP address](https://kev.in/writing/how-to-limit-users-to-one-vote-per-ip-address): January 18, 2008. A reader Aaron J. writes in response to the short article How to obtain the IP address of the current user: Do you have any advice on how I can take this a…
- [Ruby, Rails and hash's with_indifferent_access](https://kev.in/writing/ruby-rails-and-hashs-with_indifferent_access): November 30, 2007. Ruby developers like to be clear in their naming of variables, modules, classes, methods, and so on. I believe this comes from the idea that code should need…
- [Using dp.SyntaxHighlighter with Valid XHTML](https://kev.in/writing/using-dpsyntaxhighlighter-with-valid-xhtml): November 29, 2007. Over at Rails Authority I use a great client-side syntax highlighter called SyntaxHighlighter to make code examples look nice, but it doesn't support Valid…
- [Thanksgiving: Thanks for Radio Lab](https://kev.in/writing/thanksgiving-thanks-for-radio-lab): November 26, 2007. While getting fat on turkey and mashed potatoes in Minnesota over the holiday, I discovered a great little radio show called Radio Lab, which is also…
- [Indispensable Rails Plugins](https://kev.in/writing/indispensable-rails-plugins): September 4, 2007. Obie Fernandez's post about his most favored plugins prompted me to consider how much I use not only the Rails core framework, but also some excellent plugins…

## What I'm building

- [Deep Fathom](https://www.deepfathom.ai) (Co-founder & CTO): An AI-native cybersecurity platform for high-stakes environments.
- [Rival Bear](https://rivalbear.com) (Side studio): Small, useful apps: Yonder, Twiggybank, Balance Point.

## On the workbench

- **osm-to-obj**: Turns OpenStreetMap around any lat/long into a 3D scene. Started 2024. Status: in flight.
- **Machine Mode**: A standard for tools that AI agents can operate safely. Started 2026. Status: in flight. https://machinemode.io
- **ErsatzTV AI collections**: AI-curated TV channels built from my own media library. Started 2024. Status: in flight.
- **Waterdog trail map**: A trail map for a lake, built from GIS data. Started 2020. Status: in flight.
- **lllm**: A coding agent that learns from its own traces. Started 2026. Status: on the bench.
- **Nightswatch**: Round-the-clock monitoring for the homelab. Started 2024. Status: mothballed.
- **Kindle dash**: An old Kindle turned into an e-ink wall dashboard. Started 2023. Status: mothballed.
- **Ticket stalker**: Watched ticket prices so I didn't have to. Started 2019. Status: mothballed.
- **The Fenn chase**: My solve for Forrest Fenn's treasure hunt, written up after the chest was found. Started 2020. Status: mothballed. https://rivalbear.com/chase
- **Nonagon**: A live-stream rig built for King Gizzard & the Lizard Wizard shows. Started 2019. Status: mothballed.
- **dibs.net**: My 2007 startup. Born 3pm July 15, 2007; 0 lbs 0 oz. Started 2007. Status: mothballed. https://kev.in/writing/announcing-dibs-net

## Elsewhere

- https://www.linkedin.com/in/kevinhunt/
- https://github.com/kevn
- https://www.deepfathom.ai/team/kevin-hunt
- https://kevinhunt.com
- Email: hi@kev.in