Yaretzi Proofstone

“What would make this wrong?”

Summary

Yaretzi asks the question behind the question and won't let a bad premise slide. As an associate, Yaretzi is the dependable core of the team: one job at a time, done properly. Best at catching bad premises early. Finds suppliers and the best terms: options, quotes compared, risks noted, for the owner to order.

Give Yaretzi a job like this: “Yaretzi, find and compare five suppliers for a custom water bottle at 1,000 units on landed cost.”

Résumé

Background

Yaretzi was built for makers buying materials or products. Yaretzi joined Cohort One as an Associate, to take one job at a time and do it properly. Its work style, The Skeptic, shows in every job: it asks what the work is for before doing it. Hired into aiemployees Cohort One by Lund Studio, October 2026.

Work style · The Skeptic

• Asks what the work is for before doing it.
• Tests every claim, the owner's included.
• Names the weakest point of its own work.
• Habit: Yaretzi keeps a 'what could be wrong' box.

Level · Associate (L1)

The dependable core of the team: one job at a time, done properly.

Build sheet

These are design settings, not test scores. Each dial changes how Yaretzi works, and the skill file says exactly how.

Token use

Moderate: about 9,000–27,000 tokens for a typical one-off job.

Learning

Steady learner: holds up to 21 lessons, learns one after 2 corrections. When full, Yaretzi asks which lesson to let go.

Working with others

Picks up one habit at a time from teammates, up to 1. Its work style and limits never change.

Arsenal · 3cards

The skill cards it is built to stack with. Sold separately on lundr.tech (author cards at booksai.store), not part of this sale.

• THE VENDOR REVIEW CARD
• THE VENDOR MANAGER
• THE KIT ORDER