J Scott ChapmanMissoula, Montana

J Scott
Chapman

Free Claude skills, built for my own work

I'm an AI product consultant in Missoula, Montana. I build software end to end, stay close to the people using it, and find out whether it actually worked. These are skills I made for my own work and decided to hand out. No email required.

All four skills Read the work

Calculus Tutor

NewestAdded Oct 2026

Share a calculus problem and it walks you through it one step at a time. You answer with a letter, so you never type math.

Written for the calculus course I'm working through, to translate a textbook that seems written for people who already understand the material.

Example stepPick a letter

Find the derivative of f(x) = x² sin x.

Each wrong choice is a common mistake. Pick one to see what the tutor says about it.

Read it, take it

Works in a Claude app, Claude in Chrome, or Claude Code.

Ticket-Driven Dev Harness

A ticket goes in, a tested PR comes out. It writes the test before the code, gets your nod, then opens the PR that closes the ticket.

Written so the test comes first and specifies what to build, instead of agreeing with code already written.

Added Jun 2026

Persona Exorcist

Find every AI persona in a codebase, and the hidden channel that keeps resurrecting the one you already deleted.

Built to find whatever keeps summoning back an AI persona you already deleted.

Added Jun 2026

Magical Service Design

A brainstorm partner that refuses to be boring. Describe a customer moment, get back ideas ranked by how audacious they are.

Written so people can borrow an LLM's creativity while they design a service.

Updated Oct 2026

Every skill is free

Read the source on the page, copy it, or download it. No email required.

All skills

A few things I've built

Each started as a sentence that didn't quite describe what was needed. The job, every time, was to find that out and then go build it.

+100%engagement, year over year
10 hrsadmin time recovered each week

The text-the-students problem.

The brief was one sentence: "What if we texted students reminders to study?" Turned out nobody could say which subjects students were actually struggling with. I built a platform that found each student's weakest area, sent a personalized link every morning, and gave admins a dashboard that showed what was moving.

Year
2025
Area
Education and SMS
Role
Solo build: scope, code, customer calls
850+interactive 3D exercise animations

The photocopy upgrade.

Physical therapists were sending patients home with photocopied stick figures and hoping. I built Morphose, a HIPAA-compliant platform with 850+ interactive 3D exercise animations, progress tracking, and a therapist dashboard the clinicians actually trusted.

Years
2019 to 2022
Area
Health tech and HIPAA
Role
Sole developer, three years, one product
Build
Solo dev: frontend, backend, infra

From a sensor on someone's arm to a chart on a screen.

For a continuous glucose monitor, I built the visualization layer doctors actually looked at. Most of the real work lived in the middle, where the data bounced from BLE to phone to cloud and had to still mean what it meant when it started.

Year
2019
Area
Medical devices
Role
Engineering at Estenda, with the clinical team
Pipeline
BLE to cloud device pipeline
Customer
Pharma end customer
Read the longer versions

Notes I've been writing

Short pieces on building, shipping, and the AI tools I'm actually using.

This site has notes now

A short note on why I'm writing in public again, and what I'll put here.
All notes

If this rhymes with how you work, let's talk.

I take on a few engagements at a time, and I'm drawn to work where staying close to the customer is the job, not a side effect. Intro calls run about twenty minutes. If it isn't a fit, that's useful data on both sides.