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 a specific NFT (ID 96) via a POST request. It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories — all settled on-chain using the x402 protocol on the Base network with USDC.
The endpoint accepts x402 payments with a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request. No API keys or accounts are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof. The response MIME type is application/json. The payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds.
The platform advertises a uniform $0.02/request pricing model with no rate limits, no minimums, and no commitments. However, there is no OpenAPI schema, no request/response body documentation, and no examples available from the crawled pages. The specific structure of the NFT owner response and what input parameters (if any) the POST body expects are unknown. The endpoint is live and returning a valid 402 challenge.
Capabilities
Use cases
- —Checking current ownership of a specific NFT programmatically
- —Integrating NFT ownership verification into agent workflows
- —Building dashboards that display NFT holder information
Fit
Best for
- —Agents needing on-demand NFT ownership data without API key management
- —Developers prototyping x402 payment flows on Base
- —Low-volume, pay-as-you-go NFT data queries
Not for
- —Bulk NFT ownership queries across large collections (single NFT ID hardcoded in path)
- —Users who need detailed NFT metadata beyond ownership
- —Applications requiring free or subscription-based access
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/96/owner \
-H "X-PAYMENT: <x402_payment_proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing, but there is no OpenAPI schema, no request/response documentation, and no examples. The endpoint path is narrow (single NFT ID 96), and the crawled pages beyond the homepage returned only 'Connect wallet' with no useful content. Effectively a stub listing.
Warnings
- —No request or response schema documented — input body format and response structure are unknown
- —Endpoint path is hardcoded to NFT ID 96; unclear if other IDs are supported or how to parameterize
- —No OpenAPI spec, no examples, and ancillary pages (pricing, README, api) returned no useful content
- —Platform appears to be a demo or early-stage project with many advertised endpoints but no documentation
Citations
- —Endpoint returns 402 with x402 challenge advertising USDC on Base at 20000 base units ($0.02)https://lowpaymentfee.com/api/v1/nfts/96/owner
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and no minimumshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/96/owner