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 #53. 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/53/owner` accepts POST requests and is gated behind an x402 payment challenge. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made via the `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are advertised; access is instant once payment is included in the X-PAYMENT header.
The platform lists many other endpoints at the same $0.02 price point covering sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more. However, no OpenAPI schema, detailed request/response documentation, or usage examples were found in the crawl. The exact response format for the NFT owner endpoint is undocumented beyond the stated mimeType of application/json.
Capabilities
Use cases
- —Querying the current owner of a specific NFT programmatically
- —Integrating NFT ownership checks into agent workflows without API key management
- —Verifying NFT provenance or holder status in automated pipelines
Fit
Best for
- —Agents needing on-demand NFT ownership data with no signup
- —Developers prototyping x402 payment flows on Base
- —Low-volume, pay-as-you-go NFT data queries
Not for
- —Bulk or batch NFT ownership lookups across many token IDs (only NFT #53 is exposed at this path)
- —Users who need free or subscription-based access rather than per-request crypto payments
- —Querying NFTs on networks other than Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/53/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). However, there is no OpenAPI schema, no documented request body format, no example responses, and no detailed documentation for this specific NFT endpoint. The listing is essentially a stub with a working payment gate.
Warnings
- —No OpenAPI or request/response schema available — request body and response format are unknown.
- —This endpoint is hardcoded to NFT #53; it is unclear whether other NFT IDs are supported at different paths.
- —No documentation pages rendered meaningful content (pricing, README, and /api pages only showed 'Connect wallet').
- —The platform lists many diverse API categories but no evidence of actual backend functionality was found beyond the x402 gate.
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/53/owner
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/53/owner
- —All APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com