Install
npx skills add ProjectOpenSea/opensea-skill --yesclaude mcp add opensea-skill -- npx skills add ProjectOpenSea/opensea-skill --yes{
"mcpServers": {
"opensea-skill": {
"command": "npx",
"args": [
"skills",
"add",
"ProjectOpenSea/opensea-skill",
"--yes"
]
}
}
}Install command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →OpenSea Skills
Read-only mirror. This package is developed in a private monorepo and mirrored to ProjectOpenSea/opensea-skill when a version is released, so the public code can trail the internal main branch by weeks.
Pull requests opened on the mirror cannot be merged there. They are read, and a fix worth taking is recreated in the monorepo. Because a fix that has landed internally is not public until the next release, filing an issue before writing a patch is the quickest way to find out whether a bug is already fixed.
Agent Skills for interacting with OpenSea: query NFT and token data, trade on the Seaport marketplace, swap ERC20 tokens, and build AI agent tools with onchain gating.
This repository follows the Agent Skills specification.
Decision tree
Pick the right skill in one question:
Want to use OpenSea?
├── Query NFT/token data, search, collection stats ──────── opensea-api
├── Buy/sell NFTs (listings, offers, fulfillment) ───────── opensea-marketplace
├── Swap ERC20 tokens (DEX aggregator) ──────────────────── opensea-swaps
├── Set up wallet signing for transactions ──────────────── opensea-wallet
└── Build/register/gate AI agent tools (ERC-8257) ───────── opensea-tool-sdk
Skills
opensea-api
Query NFT and token data through the OpenSea CLI, SDK, MCP server, or shell scripts. Covers collections, NFTs, tokens, search, drops, events, account lookups, and wallet-scoped operations.
- Auth:
OPENSEA_API_KEY - Setup: Get a key at opensea.io/settings/developer or instantly via API
- Entry point:
opensea-api/SKILL.md
opensea-marketplace
Buy and sell NFTs on the Seaport protocol. Create listings and offers, fulfill orders, cross-chain purchases, and sweep multiple listings.
- Auth:
OPENSEA_API_KEY+ wallet provider credentials - Entry point:
opensea-marketplace/SKILL.md
opensea-swaps
Swap ERC20 tokens across supported chains via OpenSea's DEX aggregator. Get quotes, check balances, and execute swaps.
- Auth:
OPENSEA_API_KEY+ wallet provider credentials (for execution) - Entry point:
opensea-swaps/SKILL.md
opensea-wallet
Set up and configure wallet signing providers for OpenSea transactions. Supports Privy, Turnkey, Fireblocks, Bankr, and local private keys.
- Entry point:
opensea-wallet/SKILL.md
opensea-tool-sdk
Build, register, and gate AI-callable tool endpoints using the OpenSea Tool Registry (ERC-8257) on Base. Supports x402 pay-per-call and NFT-gated access.
- Auth: Wallet credentials for onchain registration
- Entry point:
opensea-tool-sdk/SKILL.md
Less-obvious routing
The tree above covers the common cases. These edge cases catch the easy-to-misroute ones:
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