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 #35. 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/35/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 (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). There are no API keys, no rate limits, and no upfront commitments — each call is independently paid.
The platform advertises a uniform $0.02/request pricing across all its endpoints. While this specific endpoint focuses on NFT owner lookups, the same provider hosts endpoints for sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more. No OpenAPI schema or detailed request/response documentation was found beyond the x402 challenge and the landing page listing.
Capabilities
Use cases
- —Look up the current owner of a specific NFT programmatically
- —Verify NFT ownership as part of a gating or access-control workflow
- —Integrate NFT ownership checks into an agent pipeline without managing API keys
Fit
Best for
- —Agents needing one-off NFT ownership queries with no signup
- —Developers prototyping NFT-aware applications on Base
- —Micropayment-native workflows that settle in USDC on Base
Not for
- —Bulk or batch NFT ownership queries across many token IDs (only NFT #35 is addressed by this endpoint)
- —Users who need free or subscription-based access without per-call crypto payments
- —Querying NFTs on networks other than Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/35/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 the endpoint is narrowly scoped to a single NFT ID. The crawled pages beyond the landing page returned only 'Connect wallet' with no useful documentation.
Warnings
- —No request or response schema documentation available — request body format and response structure are unknown.
- —Endpoint is hardcoded to NFT #35; it is unclear whether other NFT IDs are supported at different paths.
- —No OpenAPI spec, no README content, and no detailed docs were found during crawl.
- —The broader platform lists many endpoint categories but none were verified beyond this single endpoint.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/nfts/35/owner
- —The platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access on Base.https://lowpaymentfee.com
- —USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/nfts/35/owner