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Agents made writing code cheap.Reading it is the moat now.

Every file an agent writes and you merely merge is a file you understand a little less. Atrophic Dev mines your git history for the code slipping out of reach and turns it into short quests — solved in VS Code, graded against the code itself.

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Grounded in your real code. No fabricated exercises, ever.

substance.tsAtrophic · reckon · beat 1/2 · locate
Quest · composed 2026-07-14The Symbol That Isn't Therelocatepredict

Somewhere in this file, a single predicate decides what counts as evidence. Find it.

The line numbers are live — click one.

Graded against the code itself — no fabricated exercisesbeat 1: locate

A real quest our pipeline generated from our own repo — answer key sealed into this HTML before you arrived

How it works

From git history to a graded quest.

01

Connect a repo

The GitHub App reads your history for what's drifting. Real signals from our own repos:

substance.tschanged 2026-07-29
progressService.tsan agent wrote it last
avatarStatusBar.tshub file
complexity.ts ↔ substance.tstwo files that must agree
02

Solve in VS Code

Every kind is a fixed chain of beats, chosen by deterministic routing. The LLM does not get to invent the test.

03

Graded against the code

Answers are checked against the file itself — line hits, keyed predictions, rubric'd explanations. Skills, XP and streaks update from real outcomes, not vibes.

The routing table

Five kinds. One source of truth: your repo.

ReckonFREEchanged in the last two weeksRe-acquaint yourself with code the git history says you've lost touch with.
TraceFREEhub file — everything routes through itFollow behavior through the hub files everything else routes through.
AuditFREEa change worth reviewingRead a change the way a reviewer should: explain it, then predict its consequences.
ReclaimPROan agent wrote it lastTake back ownership of files your agents wrote last — and end with a real fix.
ReconcilePROtwo files that must agreeWork the seam between files that have to agree — then make them agree.

If a quest can't be anchored in your actual code, it isn't generated.

Reckon, Trace & Audit free from day one

Proof

A real quest, start to verdict.

Quests arrive in VS Code, on the code they're about. Below: one real quest our pipeline generated from our own repo, replayed as an illustration — the prompt, the code, the score, and the feedback are all verbatim from the run.

tierGate.tsReclaim · beat 1/4 · locate
Find the final return statement in isKindAllowedForTier.this is it — commit location
36export function isKindAllowedForTier(kind: QuestKind, tier: TierConfig, isAdmin = false): boolean {37 if (isAdmin) return true;38 if (kind === "reclaim") return tier.features.reclaim;39 // Audit (NEXT 2 moat) is pro+ only, same shape as reclaim — gated on its own40 // features.audit entitlement so free/pro/max/turbo can move independently of41 // reclaim's flag.42 if (kind === "audit") return tier.features.audit;43 // Reconcile (moat, N-file seam repair) is pro+ only, same shape as44 // reclaim/audit — gated on its own features.reconcile entitlement, so45 // free/pro/max/turbo can move independently of reclaim's/audit's flags.46 if (kind === "reconcile") return tier.features.reconcile;47 return true;48}
Beat 01 · locate — the quest opens on the real file. Drawn; prompt and code verbatim.
tierGate.tsGraded
36export function isKindAllowedForTier(kind: QuestKind, tier: TierConfig, isAdmin = false): boolean {37 if (isAdmin) return true;38 if (kind === "reclaim") return tier.features.reclaim;39 // Audit (NEXT 2 moat) is pro+ only, same shape as reclaim — gated on its own40 // features.audit entitlement so free/pro/max/turbo can move independently of41 // reclaim's flag.42 if (kind === "audit") return tier.features.audit;43 // Reconcile (moat, N-file seam repair) is pro+ only, same shape as44 // reclaim/audit — gated on its own features.reconcile entitlement, so45 // free/pro/max/turbo can move independently of reclaim's/audit's flags.46 if (kind === "reconcile") return tier.features.reconcile;47 return true;✓ on key48}

score 82needs-work+27 XPComprehension +2 · Implementation −2

"You found the code on the first try. Your prediction was right — you still understand what this does."

The verdict — real score, real feedback, real skill deltas.

Your codebase is drifting away from you.

Atrophic keeps your comprehension of your own repo measurably alive — quest by quest, graded against the code itself.

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