OpenSea key facts
| Category | NFT marketplace |
|---|---|
| Chains | Ethereum, Solana, Base and 27 more |
| Platforms | Web, API |
| Custody | Non-custodial |
| Fees | 1% on sales, 10% on primary-drop mints, plus collection creator fees |
| Company | Ozone Networks, Inc. (Miami, Florida) |
| Chains | 30 chains, token swaps on 28 |
| US availability | Available: terms restrict only sanctioned jurisdictions |
SEA token
Market data: CoinGecko, updated Nov 10, 2026. Educational content, not financial advice.
What is OpenSea?
OpenSea is an NFT and token marketplace operated by Ozone Networks, Inc., headquartered in Miami, Florida. Its developer docs list 30 supported chains, including Ethereum, Solana and Base. The marketplace fee is 1% on sales and 10% on primary-drop mints, and creator fees set on a collection are added to orders.
How OpenSea works
OpenSea is a peer-to-peer marketplace: listings and offers are orders signed from your own wallet, and trades settle on-chain through Seaport, the open-source trading protocol OpenSea publishes.
Its developer docs describe one API for tokens and NFTs across 30 chains, with token swaps available on 28 of them, plus a TypeScript SDK (@opensea/sdk), a CLI and an MCP server.
Creator earnings work in two modes. If a collection sets them as enforced, the set percentage is paid automatically at sale. If they are optional, the seller can adjust the suggested rate and the buyer decides whether to pay it. Wrapping and unwrapping tokens carries no OpenSea fee, and private listings currently have a 0% OpenSea fee.
How to start with OpenSea
- You need a third-party self-custody wallet and must be at least 18.
- OpenSea's terms say it is not a wallet provider, exchange, broker or money services business, so you do not deposit funds with it: you connect the wallet, fund it with the chain's native token, and sign listings or purchases.
- People located in, or organized under the laws of, a U.S.-sanctioned country cannot use the platform.
- Developers need an API key, which the docs offer through an instant key flow for agents.
OpenSea fees and limits
- OpenSea takes 1% on NFT sales, already included in the price buyers see, and 10% on mints in a primary drop.
- Swaps carry a 0% OpenSea fee, though third-party providers may charge their own.
Gas goes to the network, not to OpenSea, and you pay it when you list an NFT for the first time, accept an offer, buy, or transfer an NFT to another wallet. Fees are fixed when you create the listing or offer.
Risks to know before using OpenSea
- OpenSea has no custody or control over wallets, so a lost seed phrase or a malicious signature cannot be reversed by support.
- The terms require individual binding arbitration and bar class actions.
- OpenSea Points and Treasure Chests are, in the terms' words, not a currency or asset and have no cash or crypto value, so do not treat rewards as income.
- On optional-royalty collections, what a creator receives depends on the buyer's choice.
OpenSea usage
From DefiLlama (fees users paid), updated Nov 10, 2026.
OpenSea alternatives
Other projects people compare with OpenSea.
Ethereum NFT marketplace and aggregator for active traders, with the Blend lending protocol and BLUR token.
Solana NFT marketplace with a 2% transaction fee and optional creator royalties.
Solana NFT marketplace with an NFT AMM, collection-wide bids and enforced royalties.
Multichain NFT marketplace and NFT API, operated since June 2026 by Panama-based Gahinga Inc.
Ethereum NFT marketplace that pays protocol fees back to users as rewards, with the LOOKS token.
Aggregated NFT marketplace across Ethereum, Base and 25 other markets, with a 0.5% to 2% trading fee.
Where OpenSea ranks on DappAtlas
Listed next to OpenSea
- NFT Price Floor NFT tool
- Dune Analytics tool
- OKX Wallet Crypto wallet
- Highlight NFT tool
- Scatter NFT tool
- Manifold NFT tool
OpenSea pros and cons
- Supports 30 chains
- 1% marketplace fee on sales
- Collection fees exposed through a public API
- 10% fee on primary-drop mints
- Creator fees on some collections raise total cost
OpenSea FAQ
What is OpenSea?
OpenSea is an NFT and token marketplace operated by Ozone Networks, Inc., headquartered in Miami, Florida. Its developer docs list 30 supported chains, including Ethereum, Solana and Base. The marketplace fee is 1% on sales and 10% on primary-drop mints, and creator fees set on a collection are added to orders.
Which chains does OpenSea support?
Ethereum, Solana, Base and 27 more.
How much does OpenSea cost?
1% on sales, 10% on primary-drop mints, plus collection creator fees, according to OpenSea’s own page (checked Sep 26, 2026).
How much do users pay OpenSea in fees?
$952,562 over the last 30 days, according to DefiLlama on Nov 10, 2026.
Does OpenSea have a token?
Yes, SEA. Educational content, not financial advice.
Is OpenSea available in the US?
Available: terms restrict only sanctioned jurisdictions, according to OpenSea’s own page (checked Sep 26, 2026).
Does OpenSea hold my funds?
No. OpenSea is non-custodial: you keep your funds in your own wallet and sign each transaction.
Sources
How this page works
Sources: OpenSea: official site, OpenSea Help: fees on OpenSea, OpenSea: Terms of Service. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.