Conciseness

Every step is project-specific instruction ("keep them free of the canvas and the DOM so Vitest can run them", "Never use local storage directly") with zero padding and no explanation of concepts Claude already knows. Not 4 because nothing could be trimmed without losing actionable information.

Actionability

Gives concrete file paths ("src/games/<game-id>/" with game.ts, game.test.ts, README.md), exact commands ("npm run format, then npm run check"), specific API calls ("recordScore(ringToss.id, score) from src/carnival"), and a copy-paste TypeScript export template. The comment placeholders inside start() are justified flexibility since each game's implementation differs, not a gap.

Workflow Clarity

Ten numbered steps in clear dependency order, a fix loop ("fix anything it reports"), and a 'Done when' checklist with explicit validation (game playable at #/play/<game-id>, best score shows, "npm run check passes, including the registry test"). Not 4 because the validation checkpoints are explicit and close the loop with success criteria.

Progressive Disclosure

Well-organized sections (intro, Steps, Done when) with no inlined content that belongs in separate files, and it delegates the pattern to a single clearly-signaled source ("Read src/games/water-cannon/game.ts first: it is the pattern to copy") instead of duplicating it. No bundle files exist and none are needed at this size.

Specificity

Names the domain and one concrete action ("Add a new game to the Tessl Carnival midway, following the water cannon pattern") but does not enumerate several specific actions like the 4-5 anchors require. Not 4 because "following the water cannon pattern and the house rules" is a pointer to references, not additional concrete capabilities.

Completeness

Explicitly answers both: what ("Add a new game to the Tessl Carnival midway, following the water cannon pattern and the house rules") and when ("Use when asked to build, add or create a carnival game or booth, such as ring toss, whack-a-mole or hook a duck") with concrete trigger phrases. The 'Use when...' clause is present, so no cap applies.

Trigger Term Quality

Covers verb synonyms ("build, add or create"), noun synonyms ("carnival game or booth"), and concrete example games ("ring toss, whack-a-mole or hook a duck") — the natural phrases a user would say. Not 4 because no common variation of the request is missing for this domain.

Distinctiveness Conflict Risk

Anchored to a unique project ("the Tessl Carnival midway") with distinct, unambiguous triggers (specific game names like ring toss, whack-a-mole, hook a duck), so it is unlikely to fire for any other skill. Not 4 because there is no realistic overlap with a neighboring skill's triggers.