Query NFT ownership data via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns NFT ownership information for NFT ID 7. It is part of a broader suite of x402-protocol APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or upfront commitments required.
The specific endpoint `/api/v1/nfts/7/owner` accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers receive a 402 challenge containing payment parameters (payTo address, asset contract, max amount) and must include a valid X-PAYMENT header to authorize the USDC transfer. The USDC asset contract used is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (native USDC on Base). The maximum amount required is 20,000 base units, which equals $0.02 given USDC's 6 decimal places.
Note that the provider's landing page lists many API categories but provides no detailed documentation, request/response schemas, or usage examples for any individual endpoint. The NFT ownership endpoint is not explicitly listed on the homepage, so its exact response format is unknown. Treat this as a lightweight, pay-per-call data lookup with minimal documentation.
Capabilities
Use cases
- —Querying the current owner of a specific NFT programmatically
- —Building dashboards that display NFT ownership information
- —Agent-driven workflows that need on-chain NFT ownership data without managing API keys
Fit
Best for
- —Developers needing simple, keyless NFT ownership queries
- —AI agents that can settle x402 micropayments on Base
- —Low-volume, pay-as-you-go NFT data lookups
Not for
- —Bulk NFT collection scanning (single-NFT endpoint, no batch support evident)
- —Users who cannot settle USDC payments on the Base network
- —Applications requiring detailed NFT metadata beyond ownership
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/7/owner \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the NFT ownership endpoint is not even listed on the provider's homepage. Effectively a stub with verified liveness.
Warnings
- —No API documentation or OpenAPI spec available
- —No request or response schema provided for this endpoint
- —The /api/v1/nfts/7/owner path is not listed on the provider's homepage — it may be undocumented or experimental
- —Exact response format is unknown; example_response_json is null
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/nfts/7/owner
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/7/owner
- —All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —maxAmountRequired is 20000 base units (= $0.02 USDC with 6 decimals)https://lowpaymentfee.com/api/v1/nfts/7/owner