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OpenSea Contract Endpoints API

Contract endpoints to retrieve contract metadata and payment token details

OpenSea Contract Endpoints API is one of 17 APIs that OpenSea publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Contract Endpoints. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

This API exposes 2 operations across 2 paths, and defines 2 schemas. It is described by OpenAPI 3.1.0, at version 2.0.0.

Requests are made against a single base URL, https://api.opensea.io.

2 operations 2 paths 2 schemas 2 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.1.0
API Version
2.0.0
Base URL
https://api.opensea.io/api/v2
Authentication
API Key
Contact
Resource Areas
1

Authentication & Security 1

OpenSea Contract Endpoints API declares 1 security scheme for authenticating requests. An API key is passed in the header as x-api-key (ApiKeyAuth). By default, every request must be authenticated.

  • ApiKeyAuth — API key required for authentication

Paths & Operations 2

Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.

Contract Endpoints 2

Contract endpoints to retrieve contract metadata and payment token details

GET
/api/v2/chain/{chain}/payment_token/{address}
Get payment token
get_payment_token 2 params → 200400404500
GET
/api/v2/chain/{chain}/contract/{address}
Get contract
get_contract 2 params → 200400404500

Schemas 2

The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are PaymentToken (8 properties), ContractResponse (5 properties). Each schema is shown below with its type and property counts.

PaymentToken
object
8 properties 8 required
ContractResponse
object
5 properties 5 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

opensea-contract-endpoints-api-openapi.yml Raw ↑

Other APIs OpenSea publishes across the network.

OpenSea Stream API
OpenSea Account Endpoints API
OpenSea Analytics Endpoints API
OpenSea Auth Endpoints API
OpenSea Chain Endpoints API
OpenSea Collection Endpoints API
OpenSea Drops Endpoints API
OpenSea Listing Endpoints API
OpenSea NFT Endpoints API
OpenSea Offer Endpoints API
OpenSea Order Endpoints API
OpenSea Search Endpoints API
Where this information came from

This is an independent, third-party profile of OpenSea Contract Endpoints API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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