Conciseness

The body is dense and mostly command tables rather than concept explanation, but it contains noticeable trimmable bulk: raw curl examples in "Tool discovery" duplicating the CLI table rows above them, full MCP tool parameter tables inlined, and wordy prose in "Agent accounts". More than minor trim (anchor 4) but not padded concept explanation (anchor 2).

Actionability

Fully executable throughout: exact CLI commands with flags, real script paths (all verified present in scripts/), a copy-paste bash block for API-key resolution, a TypeScript SDK snippet, and concrete examples covering the common cases. Matches the top anchor.

Workflow Clarity

The API-key flow is an ordered 4-step sequence with edge cases (401/403 re-fetch, 429 backoff), and batch operations have a pre-bulk checklist with explicit validation (single test request, --limit 1) plus an error-code table with recovery actions and receipt polling for cross-chain mints. The batch-operation cap does not apply since validation is present; matches the top anchor.

Progressive Disclosure

References exist and are clearly signaled (references/authentication.md, rest-api.md, stream-api.md — all real files, one level deep), but large blocks of reference material are inlined in SKILL.md: full endpoint parameter tables with curl examples for the tools API, MCP tool parameter tables, and a complete script catalog — exceeding the anchor-3 example of 200 lines of inline API reference. Structure is good (above 3's unclear signaling) but the inline bulk exceeds 4's "minor organization gaps".

Specificity

Enumerates many concrete actions ("Get floor prices, collection stats, NFT details, token data, trending collections, drops, events, search, favorites, profile and collection settings") plus the access methods (CLI, SDK, MCP server, shell scripts). Comprehensive coverage matching the top anchor; the vague tail "other wallet-scoped operations" is trivial.

Completeness

The "what" is clear and detailed, but there is no "Use when..." clause or equivalent positive trigger guidance for this skill — the closing sentence hands trading/swaps off to sibling skills, which implies "when" only by exclusion. Per the rubric guideline, a missing explicit 'Use when' caps completeness at 3.

Trigger Term Quality

Good natural-term coverage ("floor prices", "collection stats", "NFT details", "trending collections", "drops", "favorites") but a few phrases users would naturally say are missing ("mint", "watchlist", "activity", "NFT marketplace"). Fits the score-4 anchor rather than 5 because synonyms are not comprehensive.

Distinctiveness Conflict Risk

Clear niche (OpenSea read/marketplace-data queries) with explicit handoffs ("For trading use opensea-marketplace, for token swaps use opensea-swaps") that actively prevent mis-triggering against sibling skills. Minimal conflict risk.