API Endpoints
OpenSea

Create a criteria offer

post
https://api.opensea.io/api/v2/offers

Create a criteria offer to purchase any NFT in a collection or which matches the specified trait. For trait offers where the Build Offer endpoint returns identifierOrCriteria '0', use that value directly — trait matching is validated server-side at fulfillment time rather than via onchain merkle proof.

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Body Params
protocol_data
object
required
criteria
object
required

Criteria for collection or trait offers. When traits are specified, the offer targets NFTs matching those traits. For supported collections, the identifierOrCriteria (merkle root) will be '0' and trait matching is validated server-side at fulfillment time.

string
required
Responses

400

For error reasons, review the response data.

500

Internal server error. Please open a support ticket so OpenSea can investigate.

Updated 1 day ago

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Updated 1 day ago