Conciseness

The body is dominated by tables, commands, and non-obvious security facts Claude cannot be assumed to know (no provider ships hardened; aggregate caps are not native; mutation gates per provider). Minor over-explanation remains: the 'Security' bullet section partially duplicates the provider table's 'Local dev/testing only' note, and the repo-placement mechanics in 'Where mutation recipes live' run longer than needed. Not a 5 because of these trimmable redundancies; well above a 3 because essentially nothing explains concepts Claude already knows.

Actionability

The quick start gives copy-paste-ready commands (env exports plus a real 'opensea swaps execute' invocation with concrete flags), the provider table maps each provider to its exact env vars, explicit '--wallet-provider' commands cover the alternatives, and 'opensea wallet info' is given as a concrete check. The common case is fully executable end to end.

Workflow Clarity

The quick start is clearly sequenced (pick provider and set env vars, then execute via a signing-capable command), and a validation checkpoint exists — 'Run opensea wallet info to see whether your wallet has these in place... prints loud warnings when the per-tx layer is missing'. It is not a 5 because that verification step sits deep in the security-model section rather than being integrated into the setup sequence as an explicit step with a fix-and-recheck loop.

Progressive Disclosure

The SKILL.md is a clear overview with well-signaled, one-level-deep references that all exist in the bundle: wallet-setup.md (per-provider setup), wallet-policies.md (policy fields), wallet-funding.md (aggregate-cap pattern), each with a one-line description in the References section. The '../docs/policy-administration.md' reference is deliberately outside the skill mount and the body explains exactly why — a documented structural choice, not buried nesting. Inline content (security model, provider tables) is behavior-critical context that appropriately stays in SKILL.md.

Specificity

The description names the domain ('wallet signing providers for OpenSea transactions'), states two concrete actions ('Set up and configure'), and enumerates five specific providers ('Privy, Turnkey, Fireblocks, Bankr, and local private keys'). It falls short of a 5 because it does not enumerate what configuration covers (e.g., signing policies, provider switching), leaving minor gaps in action coverage.

Completeness

Both 'what' ('Set up and configure wallet signing providers for OpenSea transactions') and 'when' ('Required for executing trades (opensea-marketplace) and token swaps (opensea-swaps)') are explicitly stated, so the missing-trigger cap does not apply. It is not a 5 because the 'when' is framed as a prerequisite relation rather than a direct 'Use when...' trigger phrase, leaving the trigger guidance slightly less explicit than the top anchor.

Trigger Term Quality

It includes natural terms users would say when needing this skill — 'wallet', 'signing', 'OpenSea', 'trades', 'token swaps', and the provider names themselves (Privy, Turnkey, Fireblocks, Bankr). A few natural terms are missing (e.g., 'spending limits', 'custody', 'NFT'), so it does not reach the comprehensive synonym coverage of a 5.

Distinctiveness Conflict Risk

'Wallet signing providers for OpenSea' plus named providers is a clear niche with distinct triggers, and the description even disambiguates against sibling skills ('opensea-marketplace', 'opensea-swaps'). Conflict risk with other skills is minimal.