Query NFT ownership data via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns the owner of NFT #34 via a pay-per-call x402 protocol. The payment is settled in USDC on the Base network. The x402 challenge advertises a maxAmountRequired of 20,000 base units; since USDC uses 6 decimals, this equals $0.02 per request. No API keys, rate limits, or subscriptions are required — callers simply attach an X-PAYMENT header with a valid payment proof.
The broader lowpaymentfee.com platform offers a suite of x402-gated endpoints spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request and settle on Base via USDC.
This specific endpoint (`/api/v1/nfts/34/owner`) accepts POST requests and returns JSON. The response schema is not documented, but the endpoint is live and returns a standard x402 challenge when called without payment. No OpenAPI spec or detailed documentation was found during crawling; the provider's landing page is the primary source of information.
Capabilities
Use cases
- —Querying the current owner of a specific NFT programmatically
- —Building NFT portfolio trackers that need ownership verification
- —Agent-driven workflows that need to verify NFT ownership before executing downstream logic
Fit
Best for
- —Developers needing simple pay-per-call NFT ownership data without API key management
- —AI agents that can settle x402 payments autonomously on Base
- —Low-volume or sporadic queries where subscription pricing is wasteful
Not for
- —Bulk NFT ownership queries across large collections (single-NFT endpoint, no batch support evident)
- —Users who cannot settle USDC payments on the Base network
- —Applications requiring detailed NFT metadata beyond ownership
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/34/owner \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI spec, no documented request/response schema, no examples, and the crawled pages beyond the landing page returned only 'Connect wallet' stubs. The endpoint's actual behavior and response format are unknown.
Warnings
- —No OpenAPI or schema documentation available — request body and response format are undocumented
- —Endpoint is specific to NFT #34; unclear if other NFT IDs are supported via parameterized routes
- —No crawled documentation beyond the landing page; /api, /pricing, and /README pages returned no useful content
- —Response schema is entirely unknown — cannot confirm what data is returned
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/34/owner
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/34/owner
- —All endpoints are listed at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com