OpenSea API

Name: OpenSea API
Availability: InStock
Author: OpenSea

Query NFT data, marketplace listings, and perform cross-chain token swaps via OpenSea API.

45|11|Updated Jan 31, 2026

Search Tags:#api #mcp #scripts #nft #swap #opensea #seaport

Ready to run

npx skills add https://github.com/ProjectOpenSea/opensea-skill --skill opensea-api-projectopensea

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: OpenSea API
Source: https://github.com/ProjectOpenSea/opensea-skill/tree/main
Command: npx skills add https://github.com/ProjectOpenSea/opensea-skill --skill opensea-api-projectopensea

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires curl, mcporter, node, viem, websocat, wscat, and includes scripts (resource) and references (resource) components.

What problem does it solve?

The OpenSea API skill provides programmatic access to NFT data, Seaport marketplace details, and cross-chain token swaps, enabling automation and integration with external tools.

Core Features & Use Cases

Query collection and NFT data, including floor price, trait details, and token metadata.
Retrieve account-level NFT inventories and activity, and find best listings or offers.
Swap ERC20/native tokens across supported chains via MCP to support cross-chain workflows.

Quick Start

Run the provided scripts in scripts/ to access NFT data, collection details, and cross-chain token swaps via MCP.

Frequently Asked Questions about OpenSea API

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I query NFT collection data and floor prices across multiple chains?▼

To query NFT collection data and floor prices across multiple chains, you can use this skill's scripts to programmatically access OpenSea API endpoints. It retrieves collection details, floor prices, and token metadata across Ethereum, Base, Arbitrum, Optimism, and Polygon.

How do I execute cross-chain ERC20 token swaps via OpenSea API?▼

You can execute cross-chain ERC20 token swaps via OpenSea API by running the provided scripts and utilizing the MCP token. The skill builds, signs, and executes recommended swaps across supported chains using dependencies like viem and node.

Do I need an OpenSea API key to retrieve account NFT inventories and activity?▼

Yes, you need an OPENSEA_API_KEY and an OpenSea MCP token to retrieve account NFT inventories and activity. These credentials authenticate your requests when running the scripts to find best listings or offers.

Can I use Seaport marketplace listings data with node and viem scripts?▼

Yes, you can use Seaport marketplace listings data with node and viem scripts. The skill provides references and scripts designed to access marketplace details and automate external tool integration using these dependencies.

What's the best way to automate OpenSea API queries for NFT data using curl and websocat?▼

The best way to automate OpenSea API queries for NFT data using curl and websocat is by executing the pre-built scripts in the scripts directory. These scripts leverage curl and websocat to access NFT data, collection details, and cross-chain swaps.