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A field guide to the /lumen-instrument skill

AI Event Tracking and Instrumentation Plan

Tracking that drifts produces analytics nobody trusts. /lumen-instrument designs event taxonomy, property schemas, and a tracking plan both devs and analysts can use.

Lumen · Product Analytics5 min readDecember 16, 2025

Event tracking that drifts produces analytics nobody trusts. The same action gets logged three ways. Properties are inconsistent. The funnel is a stack of fragile joins. The fix is upstream: a tracking plan with consistent naming, defined property schemas, and an implementation checklist that engineering and analytics work from together.

The /lumen-instrument skill designs the instrumentation plan: event taxonomy with consistent naming, property schemas per event, tracking plan mapping each user action to its event, and an implementation checklist.

Tonone's /lumen-instrument skill designs event tracking plans with taxonomy, property schemas, and an implementation checklist.

Install

/lumen-instrument ships with the Lumen agent in Tonone for Claude Code.

1. Add to marketplace

$ claude plugin marketplace add tonone-ai/tonone

2. Install Lumen

$ claude plugin install lumen@tonone-ai

Frequently asked questions

What does /lumen-instrument do?
It designs the instrumentation plan with event taxonomy, property schemas, tracking plan, and implementation checklist.
How do I install /lumen-instrument?
Install Tonone for Claude Code via tonone.ai/get-started.

Pairs well with