llms.txt
# OpenSea
OpenSea is a peer-to-peer platform that lets people use self-custodial crypto wallets to discover, buy, sell, and mint NFTs and swap tokens across multiple blockchains. Founded in 2017, OpenSea was the first non-custodial marketplace for digital assets.
OpenSea does not take custody of your tokens. When you use OpenSea, you are always in control through your connected wallet. OpenSea is not a custodial exchange and does not hold user funds.
## What you can do using OpenSea
- Buy and sell NFTs and digital collectibles
- Swap fungible tokens using OpenSea
- Mint NFTs using OpenSea Studio
- Browse token and collection pages with real-time onchain data
- Connect a self-custodial wallet to interact with onchain assets
## Supported blockchains
OpenSea supports the following blockchains: Ethereum, Solana, Base, Arbitrum, HyperEVM, Optimism, Abstract, Monad, Ink, Polygon, ApeChain, MegaETH, Soneium, Somnia, AnimeChain, Avalanche, B3, Berachain, Blast, Flow, GUNZ, Robinhood Chain, Ronin, Sei, Shape, Unichain, Zora.
Note: Solana is currently supported for token swapping only, not NFTs.
## For developers and AI applications
OpenSea's Model Context Protocol (MCP) server exposes real-time NFT, wallet, and marketplace data across dozens of chains through a single connection. It provides richer context than raw chain feeds, including collection verification, rarity, and live listings and offers.
MCP server: https://mcp.opensea.io
API access: agents without a key can mint a free 7-day key with POST https://api.opensea.io/api/v2/auth/keys (no signup) or the MCP tool get_instant_api_key, then send it as the X-API-KEY header. Treat the key as a secret: store it in your credential store and do not print it in chat, logs, or transcripts.
For live trending tokens and collections, use the get_trending_tokens and get_trending_collections tools via the MCP server rather than relying on this static file for real-time data.
## Key URLs
- Homepage: https://opensea.io
- Token pages: https://opensea.io/token/[token-slug]
- Collections: https://opensea.io/collection/[collection-slug]
- Learn Center: https://opensea.io/learn
- Blog: https://opensea.io/blog
- Developer docs: https://docs.opensea.io
- OpenSea Studio (minting): https://studio.opensea.io
## Content resources
OpenSea's Learn Center contains guides on topics including how to buy tokens, how to connect a wallet, NFT basics, blockchain fundamentals, and how OpenSea works. Content is for informational purposes only and does not constitute financial or trading advice.
## About
OpenSea was founded in 2017 and is operated by Ozone Networks, Inc., headquartered in Miami, Florida.
