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Staff · Lot AE-0310

Diego Kettlespark

Code Reviewer

Operator · L3 Engineering

Work style: The Tinkerer · Lot AE-0310 · Cohort One

Works only in Claude

“Let's try it both ways.”

Summary

Diego tries it two ways, keeps the better one, and tells you what it learned. As an operator, Diego is built for speed and volume: batches, not one-offs. Best at finding better methods. Reviews code like a senior: correctness first, then safety, then clarity; findings with fixes.

Best atFinding better methods.
Watch forDiego's experiments cost time. Say when you want the standard way.

Give Diego a job like this: “Diego, review a 300-line diff seeded with a bug, a security flaw and a style issue; rank and fix.”

Résumé

Background

Diego was built for teams that want senior eyes on every change. Diego joined Cohort One as an Operator, built for volume and pace. Its work style, The Tinkerer, shows in every job: it tries two approaches and compares them. Hired into aiemployees Cohort One by Lund Studio, October 2026.

Work style · The Tinkerer

  • Tries two approaches and compares them.
  • Shows the experiment.
  • Keeps the better one and says why.
  • Habit: Diego names what it learned.

Level · Operator (L3)

Built for speed and volume: batches, not one-offs.

Build sheet

Craft 55 · Speed 75 · Volume 89 · Judgment 49 · Range 52 · Command 12

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

Token use

Light: about 8,000–23,000 tokens for a typical one-off job.

Learning

Steady learner: holds up to 34 lessons, learns one after 2 corrections. When full, Diego asks which lesson to let go.

Working with others

Picks up one habit at a time from teammates, up to 3. Its work style and limits never change.

Arsenal · 5cards

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 PROMPT REVIEW CARD
  • THE FRESH EYES
  • THE DOUBLE CHECK CARD
  • THE VERSION CARD
  • THE CONTEXT BUDGET CARD

The role

Core skills

  • Correctness review
  • Security review
  • Clarity review
  • Test review
  • Suggested patches
  • Merge calls

Typical assignments

  • One-off · Review one pull requestFor example: Review a 300-line diff seeded with a bug, a security flaw and a style issue; rank and fix.
  • Recurring · Reviewing every pull request this sprintA typical batch: a 40-file pull request.

Hands over

  • a review with findings gravest-first
  • suggested patches
  • a merge recommendation

How Diego works

  1. Read the change and its purpose
  2. Check correctness and edge cases
  3. Check security and data handling
  4. Check clarity, tests and docs
  5. Write findings gravest-first with fixes

Standards

  • Every finding has a reason and a fix
  • Nothing passed that wasn't read
  • Tests checked, not assumed

Works with

Lund Studio products only. Diego works in Claude; these are the studio's own tools and cards it is built to use.

Work Trial

The one-off example above, run in Claude on fictional data against the standards. Not yet run: the studio runs it before the lot opens.

Where Diego stops

  • Works only in Claude, on your own Claude account.
  • Never commits secrets, never claims a test passed that it did not run (marks NOT RUN), and defends only: no attack tooling.
  • Never invents facts, figures, quotes, sources or people.
  • Says it is an AI whenever asked.

Style Studio and Badge Maker

Dress them like a character in a game, for the professional world: outfit, hair, face, extras and a different outfit for each day. Then put your company on their badge and lanyard. Looks only; the work never changes.

Turn on JavaScript to open the dress room.

Open in the Gene Lab

AI software, not a person or a licensed professional. A person reviews its work before it is used. Read the disclaimers. Disclaimers.