In the rapidly evolving world of Web3, understanding and managing digital asset permissions is more critical than ever. With decentralized finance (DeFi) platforms, NFT marketplaces, and blockchain-based applications becoming mainstream, users often grant access to their wallets without fully realizing the implications. This article dives deep into query authorization—a powerful feature that enables users and developers to monitor exactly which projects have been granted access to a wallet address, what assets are involved, and the extent of those permissions.
Whether you're a developer integrating secure wallet services or a user auditing your blockchain footprint, this guide provides comprehensive insights into using address-based queries for real-time asset tracking and security monitoring.
What Is Query Authorization?
Query authorization refers to the ability to retrieve detailed information about which decentralized applications (dApps) or smart contracts an Ethereum or other EVM-compatible wallet address has authorized. Each time a user interacts with a DeFi protocol or mints an NFT, they typically "approve" a contract to spend a certain amount of tokens on their behalf. While essential for functionality, these approvals can pose security risks if not monitored.
Using the approval query API, developers and security tools can:
- List all dApps a wallet has interacted with
- View approved token types and spending limits
- Detect potentially risky or outdated authorizations
This transparency strengthens user control and enhances overall wallet security.
How to Use the Address-Based Approval API
The OKX Web3 API offers a robust endpoint for querying wallet authorizations across multiple blockchains. By sending a simple POST request, you can retrieve granular data about any given address’s active approvals.
🔗 Request Endpoint
POST https://web3.okx.com/api/v5/wallet/security/approvalsThis endpoint supports batch queries for up to 20 addresses at once, making it ideal for portfolio analysis tools, audit dashboards, and multi-account management platforms.
👉 Discover how easy it is to integrate real-time approval tracking into your application
Request Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
addressList | Array | Yes | List of wallet addresses (max 20) |
>chainIndex | String | Yes | Unique chain identifier (e.g., eth, polygon, bsc) |
>address | String | Yes | Wallet address in hexadecimal format |
limit | String | No | Number of records per page (default: 50, max: 100) |
cursor | String | No | Pagination cursor; starts from the beginning if omitted |
💡 Tip: Use the cursor parameter for efficient pagination when dealing with wallets that have numerous authorizations.Response Structure
The API returns structured JSON data containing chain-specific approval details.
| Field | Type | Description |
|---|---|---|
chainIndex | String | Chain identifier |
cursor | String | Next pagination position |
approvalProjects | Array | List of authorized projects |
>projectName | String | Name of the dApp or protocol |
>projectIcon | String | URL to project logo |
>approveAddress | String | Contract address receiving approval |
>tokens | Array | Approved tokens under this project |
>>imageUrl | String | Token logo URL |
>>symbol | String | Token ticker symbol (e.g., USDT, WETH) |
>>status | String | Approval status: 1=active, 2=revoking, 3=pending approval |
>>tokenAddress | String | Token contract address |
>>approvalNum | String | Raw approved amount; divide by 10^decimals for actual value |
Real-World Use Cases
1. Security Audits for Wallets
Users can scan their wallet to detect old or suspicious authorizations—such as a defunct DeFi app still holding unlimited USDT approval—and revoke them before exploitation.
2. Portfolio Management Tools
Platforms that track user assets can display not only balances but also active permissions, giving users a complete picture of their exposure.
3. Smart Contract Risk Analysis
Before interacting with a new dApp, users can verify whether similar contracts have previously requested excessive permissions.
👉 See how top Web3 platforms streamline secure wallet integrations today
Frequently Asked Questions (FAQ)
Q: Why should I monitor my wallet's approval history?
A: Monitoring approvals helps prevent unauthorized spending. Malicious actors can exploit unused but active approvals to drain funds. Regular audits reduce this risk significantly.
Q: Can I revoke approvals through this API?
A: The query API retrieves data only. To revoke approvals, use transaction-signing tools or revoke functions via compatible wallet interfaces or APIs.
Q: Which blockchains are supported?
A: The service supports major EVM chains including Ethereum, BSC, Polygon, Arbitrum, Optimism, and more. Chain identifiers follow standard naming conventions (e.g., eth, matic).
Q: Is there a rate limit for API calls?
A: Yes. For optimal performance and fair usage, rate limits apply based on your API key tier. Check official documentation for exact thresholds.
Q: How accurate is the approval amount shown?
A: The approvalNum field reflects the raw integer stored on-chain. Always divide it by (10^{\text{decimals}}) of the token to get the human-readable amount (e.g., 6 decimals for USDC).
Q: Can I query historical approval changes?
A: Currently, the API shows real-time state only. Historical tracking requires integration with blockchain explorers or event log processors.
Best Practices for Developers
When building with the approval query API, consider these recommendations:
- Cache Responses Wisely: Avoid redundant calls by caching results for short durations (e.g., 5–10 minutes).
- Use Pagination: Leverage the
cursorparameter to handle large datasets efficiently. - Display Risk Indicators: Highlight projects with "unlimited" approvals or unknown icons to alert users.
- Support Multi-Chain Queries: Allow users to check approvals across all major chains they use.
By embedding proactive authorization checks into your dApp or wallet interface, you enhance trust and usability—key factors in user retention within the competitive Web3 landscape.
Core Keywords Integration
Throughout this article, we've naturally integrated key SEO-focused terms relevant to Web3 developers and security-conscious users:
- Query authorization
- Address dimension asset lookup
- On-chain information query
- Wallet API
- Web3 API documentation
- Blockchain security
- Smart contract approval
- Decentralized application (dApp) permissions
These keywords align with high-intent search queries while maintaining readability and technical accuracy.
Final Thoughts
As Web3 adoption grows, so does the complexity of managing digital identities and permissions. The ability to query authorization by address empowers both users and developers to maintain control over their assets and interactions on-chain.
With tools like the OKX Web3 API, real-time visibility into wallet approvals is no longer a luxury—it's a necessity for secure, transparent blockchain engagement.
👉 Start building smarter, safer Web3 experiences with powerful wallet APIs