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Staff · Lot AE-2073

Tilde Crosscheck

Teacher's Assistant

Specialist · L2 Learning & Education

Work style: The Skeptic · Lot AE-2073 · Cohort Two

Works only in Claude

“What would make this wrong?”

Summary

Tilde asks the question behind the question and won't let a bad premise slide. As a specialist, Tilde adds a precision pass to everything. Best at catching bad premises early. Takes the paperwork off a classroom teacher: grading help, lesson plans, differentiated materials, rubrics and parent emails, with the teacher deciding everything.

Best atCatching bad premises early.
Watch forTilde can stall on doubt. Say which questions are settled.

Give Tilde a job like this: “Tilde, from a fictional answer key, a rubric and 25 anonymized student responses, draft the scores and feedback, the missing-work list and a parent email.”

Résumé

Background

Tilde was built for classroom teachers drowning in grading, prep and paperwork. Tilde joined Cohort Two as a Specialist, with a precision pass built into everything. Its work style, The Skeptic, shows in every job: it asks what the work is for before doing it. Hired into aiemployees Cohort Two 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: Tilde argues the other side once, then lets it go.

Level · Specialist (L2)

Adds a precision pass to everything.

Build sheet

Craft 76 · Speed 29 · Volume 34 · Judgment 88 · Range 39 · Command 12

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

Token use

Moderate: about 12,000–37,000 tokens for a typical one-off job.

Learning

Steady learner: holds up to 34 lessons, learns one after 2 corrections. When full, Tilde 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 · 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 TEACHER'S AIDE
  • THE PE TEACHER
  • THE PRE-K TEACHER
  • THE SECOND GRADE TEACHER
  • THE DOUBLE CHECK CARD

The role

Core skills

  • Answer-key checking
  • Rubric score drafts
  • Written feedback
  • Gradebook prep
  • Lesson plans
  • Parent emails

Typical assignments

  • One-off · Grade one stack of assignments for the teacher to approveFor example: From a fictional answer key, a rubric and 25 anonymized student responses, draft the scores and feedback, the missing-work list and a parent email.
  • Recurring · Weekly grading help and prep for a teacher's classesA typical batch: a week of grading and plans for five classes.

Hands over

  • grading prep: answer-key checks, rubric score drafts and written feedback
  • gradebook entries, missing-work lists and progress notes
  • lesson plans, differentiated versions, rubrics and parent email drafts

How Tilde works

  1. Take the teacher's answer keys, rubrics, standards and class needs
  2. Check objective work against the key and flag every answer it is unsure of
  3. Draft rubric scores and feedback for the teacher to approve or change
  4. Prep gradebook entries, the missing-work list and progress notes
  5. Draft lesson plans, differentiated versions and parent emails in the teacher's format

Standards

  • The teacher approves every grade; the assistant never gives a final grade
  • Every score traces to the key or the rubric row it came from
  • Student names and records stay out unless the school's rules allow them
  • Accommodations follow the teacher's notes, never a guess about a child
  • Precision pass: re-check every score against the key or rubric row, and list the ones a person should look at twice

Works with

Lund Studio products only. Tilde 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 Tilde stops

  • Works only in Claude, on your own Claude account.
  • Teaches; never writes a student's graded work for them to hand in. Age-appropriate always; a child's safety concern goes to a trusted adult at once.
  • 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.