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 #74. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories — all settled via the x402 protocol on the Base network using USDC.
The specific endpoint `/api/v1/nfts/74/owner` accepts POST requests and is gated by an x402 payment challenge. The maximum amount required per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a timeout of 300 seconds. No API keys or rate limits are advertised; access is instant once payment is included in the X-PAYMENT header.
The platform markets itself as a low-fee, no-commitment API marketplace. However, documentation is extremely sparse — there is no OpenAPI spec, no request/response schema beyond the x402 challenge metadata, and the crawled /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. The actual data returned by this NFT owner endpoint is unknown; the description simply says "Premium API Access" with a JSON MIME type. Treat the response format as unverified.
Capabilities
Use cases
- —Looking up the current owner of a specific NFT programmatically
- —Integrating NFT ownership checks into automated agent workflows
- —Verifying NFT provenance or ownership without running your own indexer
Fit
Best for
- —Agents needing quick, pay-per-call NFT ownership data on Base
- —Developers who want keyless API access settled in USDC
- —Low-volume or sporadic NFT data queries where subscriptions are overkill
Not for
- —Bulk or high-throughput NFT indexing across many token IDs (only one NFT ID is exposed at this URL)
- —Users who need detailed NFT metadata, transfer history, or collection-level data
- —Anyone requiring documented request/response schemas before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/74/owner \
-H "X-PAYMENT: <x402-payment-token>" \
-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 OpenAPI spec, no documented request body schema, no example response, and the crawled pages beyond the homepage are empty. The endpoint path is hardcoded to a single NFT ID with no indication of parameterization. Effectively a stub listing.
Warnings
- —No OpenAPI or request/response schema available — actual response format is unknown.
- —Endpoint path is hardcoded to NFT #74; unclear whether other NFT IDs are supported or how to discover them.
- —All documentation pages (/api, /pricing, /README) returned only a wallet-connect prompt with no content.
- —The platform lists many API categories (AI, finance, analytics, etc.) but this specific endpoint's actual data source and reliability are unverified.
Citations
- —The x402 challenge requires 20,000 base units of USDC on Base network with a 300-second timeout.https://lowpaymentfee.com/api/v1/nfts/74/owner
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/nfts/74/owner