Conciseness

Lean and dense throughout: 'Paths are relative to index.html and cannot leave the folder', 'Writes carry If-Match automatically'. No padding, no explanation of concepts Claude already knows (no 'what is a kanban' or library tutorials); every token earns its place.

Actionability

Highly concrete: exact command 'create_app(starter, "apps/<slug>")', exact manifest keys, fully enumerated bridge API (agenta.fs read/readJSON/write/writeJSON/list/exists/stat/remove), exact kit class names, error codes and a conflict-recovery protocol. Minor gap: no worked app.json/index.html example for the hand-written fallback path, keeping it below fully copy-paste-ready anchor 5.

Workflow Clarity

Clear numbered sequence (check existing apps -> pick starter -> custom fallback -> reply with card), explicit feedback loops ('on conflict, re-read the file and reapply the change once'), a pre-creation registry merge check, and checklist rules with stop conditions ('If the file already exists with a different version, stop and say so'). Validation and recovery are explicit throughout.

Progressive Disclosure

No bundle files exist; the skill is a single ~85-line file with well-labeled sections (When, First, Folder, Bridge, Custom app rules, Starters, After, Agent-level layout) and no nested or buried references. It exceeds the under-50-lines bar for an unconditional 5, and the bridge API details and agent-level registry rules could plausibly live in separate reference files, so anchor 4 fits.

Specificity

Names the domain ('small interactive page in the drive') and several concrete capabilities: 'a board, checklist, queue, form, table or dashboard', 'picking a starter with create_app', 'the app folder layout', 'the window.agenta bridge'. Falls short of 5 only because coverage has minor gaps (app updates, registry, access modes are unmentioned).

Completeness

Explicitly answers both: what ('give the person a small interactive page... Covers picking a starter with create_app, the app folder layout, and the window.agenta bridge') and when ('Read it when the ask is for something to look at and touch rather than a reply'), with concrete trigger artifacts named. Both are clear and concrete, matching anchor 5.

Trigger Term Quality

Good natural-term coverage — 'board', 'checklist', 'queue', 'form', 'table', 'dashboard' — plus an explicit trigger clause ('Read it when the ask is for something to look at and touch rather than a reply'). A few common variations ('app', 'to-do') are missing, keeping it below the comprehensive synonym-level anchor 5.

Distinctiveness Conflict Risk

Clear niche — drive-hosted interactive apps built via create_app and the window.agenta bridge — with distinct technical triggers. Generic artifact words ('form', 'table') create minor overlap risk with document or dataviz skills, so it sits at anchor 4 rather than 5.