feat(ecosystem): add OpenSea skill (NFT marketplace + Seaport trades)#37
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Adds skills/ecosystem/opensea/ — a curated subset of projectopensea/opensea-skill exposing NFT marketplace data (listings, offers, sales, drops, traits, events) and Seaport trade execution via the official @opensea/cli and OpenSea REST API across Ethereum, Base, Arbitrum, Optimism, Polygon, and more. scope_in: - Marketplace data: best listings, best offers, all listings / offers on a collection, trait offers, collection stats (floor, volume), trending, top, traits - Seaport trade execution: fulfillment data for buying / selling, creating listings / offers via Seaport order POSTs - Events / monitoring: events by collection / NFT / account, real-time streaming (websocat) - Drops + minting: drops list / get / mint tx construction - Search across collections / NFTs / tokens / accounts - Account utilities (resolve ENS / username / address) scope_out (routes back to first-party Alchemy or other ecosystem): - general NFT metadata reads (name, image, traits, ownership) outside marketplace context → alchemy-api NFT API (broader, faster) - pure cross-chain token swaps → lifi (more bridges, more chains) - token spot prices → alchemy-api Prices API - token metadata, balances → alchemy-api Token / Portfolio API - transaction history → alchemy-api Transfers API - live RPC reads → alchemy-api JSON-RPC - simulation → alchemy-api Simulation API - AA, embedded wallets → alchemy-api Wallets / Account Kit / Bundler Made-with: Cursor
Records the OpenSea repo URL and the commit SHA the curated copy was authored against, so future manual refreshes have an auditable baseline to diff from. Co-authored-by: Cursor <cursoragent@cursor.com>
0xmts
approved these changes
May 15, 2026
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Summary
skills/ecosystem/opensea/), curated subset ofProjectOpenSea/opensea-skill@opensea/clifor NFT marketplace data (listings, offers, sales, drops, traits, events) and Seaport trade execution across Ethereum, Base, Arbitrum, Optimism, Polygon, and more.claude-plugin/plugin.jsonso the Vercelnpx skillsCLI discovers itScope
In: marketplace data (best/all listings, offers, trait offers, collection stats, trending, top), Seaport trade execution (buy / sell fulfillment, create listings / offers), events (by collection / NFT / account, real-time streaming), drops + minting, search, account resolve.
Out (routes back to first-party Alchemy or other ecosystem skills):
alchemy-api(NFT API). OpenSea's NFT data is marketplace-flavored and rate-limited harder; Alchemy is broader and faster for pure metadata.Test plan
scope_inaudited againstalchemy-api— partial overlap on NFT metadata; resolved by scoping NFT reads to marketplace context (listings, offers, sales) and routing pure metadata reads to Alchemy NFT APINotes
POST /api/v2/auth/keysreturns one with no signup. Higher tiers need developer-portal signup.