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 #88. 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/88/owner` accepts POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header using the x402 exact-payment scheme. The maximum amount required is 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is independently paid at the per-request price.
The platform advertises a uniform $0.02/request pricing model across all its endpoints. Settlement occurs on the Base L2 network to the USDC contract at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, with payments directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3. The x402 challenge specifies a 300-second payment timeout. No OpenAPI schema, detailed documentation, or example responses were found in the crawl, so the exact response format is unknown beyond the declared `application/json` MIME type.
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 Web3 applications
Fit
Best for
- —Agents needing on-demand NFT ownership data with no subscription overhead
- —Developers prototyping Web3 apps who want instant, keyless API access
- —Low-volume or sporadic NFT data lookups at $0.02 per call
Not for
- —High-volume bulk NFT indexing (no batch endpoint or volume discounts documented)
- —Querying NFTs beyond ID 88 (only this specific endpoint was probed; generalization is unconfirmed)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/88/owner \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no OpenAPI schema, no documentation of request/response formats, no example payloads, and the crawled pages beyond the landing page were empty wallet-connect stubs. The specific functionality (NFT owner lookup) is only inferred from the URL path and the generic 'Premium API Access' description.
Warnings
- —No OpenAPI or detailed API documentation available — request body and response schema are unknown.
- —Only NFT #88 was probed; it is unclear whether the platform supports arbitrary NFT IDs or collections.
- —Crawled /api, /pricing, and /README pages returned only 'Connect wallet' with no useful content.
- —The endpoint description is generic ('Premium API Access') and does not describe the NFT-specific functionality.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/88/owner
- —The platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/88/owner