Changelog

We're cleaning up two deprecated REST API endpoints along with several response fields that have been marked deprecated for a while. If you're already on the recommended replacements, nothing changes for you. If you're still on any of the removed surfaces, this post tells you what to migrate to.

On September 15th, 2025, OpenSea's platform fee for selling NFTs will change from 0.5% to 1.0% for all chains as part of the final phase of rewards. Please note that orders that do not include the updated fee will not be eligible for rewards.

On May 1st 2025 for the Ronin blockchain, all orders will continue to have a 0.5% marketplace, but will be split between 3 different addresses.

As we prepare for OS2 launch, we are making changes to our offer rules to make bidding more fair on OpenSea. On January 28th at 11AM ET, OpenSea will enforce price-based decimal place limits for all offers. Offers in ETH/WETH will follow a tiered precision system based on price range. Please see the table below for more details.

Today we introduced a new API endpoint for cancelling orders offchain that use the SignedZone: https://docs.opensea.io/reference/cancel_order

Starting today, OpenSea is migrating to Seaport v1.6. There are no interface changes to Seaport, so the methods and events are the same. As a developer, you just need to update to the latest SDK versions to create and submit orders using Seaport v1.6:

• New SDK Releases:<https://github.com/ProjectOpenSea/opensea-js/releases>
  • v7.0.5: replaces Optimism Goerli (deprecated) with Optimism Sepolia
  • v7.0.4: replaces Base Goerli (deprecated) with Base Sepolia
  • v7.0.3: fixes bug in returning errors from API responses
• Events (Analytics) API
  • Get Events (by account) pagination fixed
  • Get Events endpoints limit parameter fixed
• NFT API
  • Get Collection returns two new fields:total_supply (minted minus burned) and created_date
  • Get Contract response field supply renamed to total_supply, added note to the description of the field that this value only returns the value provided from the contract if the contract has a getter for totalSupply()
  • Get Account and Get Collection fixed returning twitter and instagram usernames

• New Major Version SDK Release (v7.0.0):<https://github.com/ProjectOpenSea/opensea-js/releases/tag/v7.0.0>
• Rate Limits: doubled default rate limits for /v2
• Events (Analytics) API
  • all events now have an event_timestamp (posix timestamp at which the event occured on the blockchain)
  • transfer events now have an nft field
  • cancel events now have the following fields: nft, order_type, and maker
    • note: API now returns both canceled listings and canceled offers when querying for event_type=cancel
  • event payment quantity now returns as a string instead of a number (for compatibility with JavaScript)
  • general purpose Get Events endpoint added
• NFT API
  • added an endpoint for getting payment tokens (has both USD and ETH price for the token)
  • added opensea_url to the NFT model
  • added valid payment_tokens to the collection response
• Marketplace API
  • added price object to offers

Today, we are launching two new endpoints: one endpoint to get the highest bid for an NFT and one endpoint to get the cheapest listing for an NFT.

Over the past 3 months, OpenSea has been closing the feature disparity between the V1 and V2 API. The V2 API is superior to V1 in many ways including: