How to Retrieve Inscription Asset Lists Using the Ordinals API

Introduction to Inscription Assets

Inscription assets, including BTC NFTs and BRC-20 tokens, represent a new frontier in blockchain-based digital collectibles. This guide explains how to use the Ordinals API to fetch valid inscriptions from specified wallet addresses.

API Endpoint Specifications

Request URL

POST `https://web3.okx.com/api/v5/mktplace/nft/ordinals/get-valid-inscriptions`

Required and Optional Parameters

Parameter	Type	Required	Description
`slug`	String	Yes	Collection slug identifier
`cursor`	String	No	Pagination cursor
`limit`	String	No	Items per page (default: 10, max: 100)
`sort`	String	No	Sorting method (see below)
`isBrc20`	Boolean	No	Filter by BRC-20 status (default: true)
`walletAddress`	String	Yes	Target wallet address

Sorting Options

listing_time_desc: Newest listings first
listing_time_asc: Oldest listings first
price_desc: Highest price first
price_asc: Lowest price first
unit_price_desc: Highest unit price first
unit_price_asc: Lowest unit price first

Response Structure

Successful responses return structured inscription data:

Field	Type	Description
`inscriptionId`	String	Unique inscription identifier
`cursor`	String	Current pagination marker
`nftId`	String	NFT-specific identifier
`ticker`	String	Token symbol
`tickerId`	String	Token identifier
`amount`	String	Quantity held

Implementation Best Practices

Pagination Handling: Always check for a cursor value in responses to manage large datasets.
Rate Limiting: Implement appropriate request throttling.
Error Handling: Prepare for HTTP status codes (429 for rate limits, 500 for server errors).

👉 Explore advanced Ordinals API techniques

Frequently Asked Questions

What's the difference between BTC NFTs and BRC-20 tokens?

BTC NFTs are unique digital assets on the Bitcoin blockchain, while BRC-20 tokens represent fungible assets using the same inscription technology.

How do I find my collection's slug?

Collection slugs appear in marketplace URLs and API documentation. Contact the platform's support if unsure.

Can I filter by multiple wallet addresses?

The current API version only accepts single-address queries per request.

What's the maximum historical data available?

Most implementations provide 6-12 months of historical inscription data by default.

How frequently is the inscription data updated?

Listings typically refresh every 15-30 minutes, depending on blockchain confirmation times.

👉 Learn about wallet security for inscription assets

Conclusion

This API provides comprehensive access to Bitcoin-based digital assets. For optimal results:

Combine with marketplace APIs for complete trading functionality
Implement client-side caching for frequently accessed wallets
Monitor API changelogs for new features

Remember to always verify wallet addresses and implement proper error handling in your applications.