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 ID 59. It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories — all settled via the x402 protocol on the Base network using USDC.
The endpoint accepts POST requests and returns JSON. Payment is handled inline via the X-PAYMENT header using the x402 exact-amount scheme. The maximum amount required is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). No API keys, rate limits, or upfront commitments are needed — each call is independently paid at the time of request.
The platform advertises a uniform $0.02 per request pricing model across all its endpoints. The specific endpoint probed (/api/v1/nfts/59/owner) is not listed on the homepage catalog but follows the same pricing and payment pattern. Documentation beyond the landing page is sparse; the /api, /pricing, and /README pages all resolve to a minimal "Connect wallet" prompt with no additional technical detail.
Capabilities
Use cases
- —Querying the current owner of a specific NFT programmatically
- —Integrating NFT ownership checks into automated agent workflows
- —Verifying NFT provenance without managing API keys or subscriptions
Fit
Best for
- —Agents needing one-off NFT ownership queries with no signup
- —Developers prototyping Web3 apps who want instant API access
- —Micropayment-native workflows on Base L2
Not for
- —Bulk or high-volume NFT indexing (no batch endpoint documented)
- —Users who need detailed NFT metadata beyond ownership
- —Anyone without USDC on Base to settle payments
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/59/owner \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no OpenAPI schema, no documented request/response format, no examples, and the specific NFT endpoint is not even listed on the provider's homepage. Documentation pages (/api, /pricing, /README) are empty beyond a wallet-connect prompt.
Warnings
- —No request or response schema documented — input/output format is unknown
- —The /api/v1/nfts/59/owner endpoint is not listed on the provider's homepage catalog; its exact functionality is inferred from the URL path
- —All documentation pages (/api, /pricing, /README) return only a 'Connect wallet' prompt with no technical content
- —No OpenAPI spec or machine-readable documentation available
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/59/owner
- —The platform advertises $0.02 per 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/59/owner