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opensea-marketplace

Buy and sell NFTs through OpenSea on EVM chains and Solana. Fulfill listings, accept or create offers, cancel orders, make cross-chain purchases, and sweep listings. Requires wallet signing; for read-only queries use opensea-api instead.

68

Quality

83%

Does it follow best practices?

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SecuritybySnyk

Medium

Suggest reviewing before use

SKILL.md
Quality
Evals
Security

Quality

Content

92%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is highly actionable and well-structured, with executable scripts, explicit validation checkpoints for risky onchain operations, and clean one-level-deep references to real bundle files.

DimensionReasoningScore

Conciseness

The body is mostly efficient and command-driven with little concept padding; only minor sections (repeated listing-check steps, a dense ERC20 paragraph) could be trimmed, keeping it just below the leanest anchor.

4 / 5

Actionability

Copy-paste-ready scripts with concrete arguments, a script-to-task table, CLI alternatives, and exit codes provide fully executable guidance covering the common cases.

5 / 5

Workflow Clarity

Numbered buy/sell/cross-chain sequences pair with an error-handling table and a transaction-safety checklist ('Always verify fulfillment data before signing', 'Execute them in order and verify each succeeds') giving explicit validation checkpoints for destructive onchain operations.

5 / 5

Progressive Disclosure

SKILL.md is a clear overview with one-level-deep, clearly signaled references (marketplace-api.md, seaport.md, both real files), an organized script table, and a scope-in/out handoff table for easy navigation.

5 / 5

Total

19

/

20

Passed

Description

75%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is specific and distinctive with concrete actions and a clear scope-out handoff, but it lacks an explicit 'Use when...' trigger clause, which caps its completeness.

Suggestions

Add an explicit trigger clause such as 'Use when the user wants to buy, sell, or create offers for NFTs on OpenSea' to lift completeness above 3.

Include a couple more natural synonyms (e.g. 'trade NFTs', 'place a bid') to broaden trigger-term coverage.

DimensionReasoningScore

Specificity

Lists multiple concrete actions ('Fulfill listings, accept or create offers, cancel orders, make cross-chain purchases, and sweep listings') with comprehensive coverage of the skill's capabilities.

5 / 5

Completeness

The 'what' is clearly stated, but there is no explicit 'Use when...' trigger clause; the only conditional is a scope-out ('for read-only queries use opensea-api instead'), which per the rubric caps completeness at 3.

3 / 5

Trigger Term Quality

Natural user phrasing is present ('Buy and sell NFTs', 'fulfill listings', 'offers', 'sweep listings'), but a few common synonyms (e.g. 'trade', 'bid') are missing, so it sits above the midpoint but not at full coverage.

4 / 5

Distinctiveness Conflict Risk

The OpenSea/EVM/Solana niche and the explicit handoff to opensea-api give it a clear, distinct trigger set with minimal conflict risk.

5 / 5

Total

17

/

20

Passed

Validation

87%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

relative_links

Relative link issues: 2 suspicious

Warning

Total

14

/

16

Passed

Repository
ProjectOpenSea/opensea-skill
Reviewed

Table of Contents

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