Conciseness

The body is ~60 dense, bullet-driven lines with zero padding and no explanation of concepts Claude already knows — even the opening principle line ("Build monsters as gameplay-compatible runtime assets, not decorative meshes") earns its place as a design constraint. Every token carries information.

Actionability

Guidance is fully concrete: exact conventions ("`+Y` up, `+Z` forward, meters, and a ground-contact root"), a named nine-state minimum ("idle, investigate, pursue, reposition, windup, attack, recover, stagger, defeated"), an exact per-attack declaration list (startup, active, recovery, cooldown, contact shape/socket, damage/posture output, facing rule, interrupt/cancel policy), and a pure sampler signature from `(movesetId, elapsed)`. Per the rubric's instruction-only note, the absence of code is not penalized when guidance is this actionable — and the detailed TS interfaces live in the referenced contract file.

Workflow Clarity

A clear ordered sequence (read the contract → define the four layers → build the rig → wire behavior/combat → compose movesets → verify → report) is capped by an explicit validation section with hard fail conditions ("Fail the asset if it has floating attachments, missing mandatory states, pose-derived damage, LOD socket drift, or unbounded resource cost") and a three-outcome conformance report, satisfying the checklist-and-validation anchor.

Progressive Disclosure

The body is a concise overview that delegates the detailed field-level contract to a single, clearly signaled, one-level-deep reference ("Read [references/monster-contract.md](references/monster-contract.md) before implementation or audit") — verified to exist and to contain the interface definitions the body only summarizes. No buried or nested references.

Specificity

The description lists four concrete verbs ("Build, integrate, audit, or refactor rigged monsters") and a comprehensive capability inventory ("monster asset contracts, procedural or imported creature rigs, semantic joints and sockets, hurtboxes and attack volumes, combat animation states, enemy-runtime adapters, LODs, deterministic review fixtures"), matching the comprehensive-coverage anchor rather than the minor-gaps anchor below it.

Completeness

Both parts are explicit: what is "Build, integrate, audit, or refactor rigged monsters for Three.js and web action games" and when is the concrete "Use for monster asset contracts, ... and validating that every monster follows one shared system" clause — matching the anchor that clearly answers both with concrete trigger phrases.

Trigger Term Quality

Good natural keyword coverage ("rigged monsters", "Three.js", "creature rigs", "hurtboxes", "web action games", "LODs"), but "enemy-runtime adapters" and "deterministic review fixtures" are author-side jargon users would not naturally say, and common user synonyms like "enemies", "boss", or "character rig" are missing — fitting the good-but-few-missing anchor, not the comprehensive-synonym anchor.

Distinctiveness Conflict Risk

The niche is unambiguous (rigged, combat-capable monsters for Three.js and web action games) and its trigger terms (hurtboxes, movesets, monster rig contracts) are unlikely to fire for adjacent animation or general game-asset skills, matching the clear-niche-minimal-conflict anchor.