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 #38. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure categories — all settled via the x402 protocol on the Base network using USDC.
The specific endpoint `/api/v1/nfts/38/owner` accepts POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header using the x402 exact scheme. The maximum amount required is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 USD. No API keys, rate limits, or upfront commitments are needed — each call is independently paid.
The platform advertises a uniform $0.02 per request across all its endpoints. Documentation beyond the landing page is sparse: the /api, /pricing, and /README pages all resolve to a wallet-connect prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The endpoint is confirmed live (402 challenge returned successfully).
Capabilities
Use cases
- —Querying the current owner of a specific NFT programmatically
- —Building NFT portfolio dashboards that need ownership verification
- —Automated agents checking NFT ownership before executing downstream logic
Fit
Best for
- —Agents needing one-off NFT ownership checks without API key setup
- —Developers prototyping NFT-aware applications with minimal friction
- —Micropayment-native workflows on the Base network
Not for
- —Bulk enumeration of all NFT owners across a collection (no batch endpoint documented)
- —Querying NFTs beyond ID 38 on this specific endpoint (path is hardcoded to NFT 38)
- —Users who need detailed NFT metadata beyond ownership
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/38/owner \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documented examples, and the endpoint's purpose (NFT #38 owner) is only inferred from the URL path. The broader platform docs are effectively empty beyond the landing page listing.
Warnings
- —No OpenAPI or schema documentation available — request body and response format are unknown.
- —The endpoint path is hardcoded to NFT ID 38; it is unclear whether other NFT IDs are supported via similar paths.
- —The /api, /pricing, and /README pages returned no useful content (only wallet-connect prompts).
- —The platform lists many endpoint categories (AI, finance, infrastructure) but this specific endpoint is an NFT query not listed on the homepage.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base network.https://lowpaymentfee.com/api/v1/nfts/38/owner
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02.https://lowpaymentfee.com/api/v1/nfts/38/owner
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com