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Elizabeth Stein
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Case study

devtools2026

ccscope

Attributes Claude Code token cost to individual skills, MCP servers, and plugins, then surfaces the ones not earning their context budget so you can trim them.

Building the tools that build the tools

Field notes

Role

Creator

Read order

Evidence first, then constraint → build → proof. Use the chapter rail to jump sections; orbit to adjacent work from the bottom of the case study.

DevTools Arsenal·✦III-Class Dwarf
26 tests passing

Evidence

System surface

No public screenshot on file, generative preview stands in for the visual layer.

Signature viewpreview

Story arc

How this shipped

Building the tools that build the toolsThree beats: what pressed against the work, how the stack answered, and what changed once it was live.

I · Constraint

The brief

Claude Code loads dozens of skills and MCP servers, each eating context budget, with no visibility into which ones actually pay rent.

II · Build

The craft

Built a CLI that parses session data to attribute token cost per skill, MCP, and plugin, then flags trim candidates.

III · Proof

What moved after launch

Turns an invisible cost into a ranked list. 26 tests. Directly informed cutting unused skills from the setup.

Engine room

At a glance

0
Tests

Inventory

Stack & signals

TypeScriptCLIClaude CodeDeveloper Tools
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Tell me what you're building

If you need someone who can own UI, systems, and AI integration without losing the plot, I'm listening. Contract, advisory, or full-time: we'll find the right shape.

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Keep exploring

Previous Project

hq

Personal dev-ops CLI that aggregates live state across ~90 repos and the services behind them (GitHub, Vercel, Sentry, Stripe, Notion, ClickUp, UptimeRobot, Railway, Jira) into work contexts, surfacing only what is broken, blocking, or worth attention. No dashboards, just the next thing to do.

Next Project

recall

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© 2026 Elizabeth Stein

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