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 #82 via a pay-per-call x402 protocol. The endpoint accepts POST requests and charges $0.02 (20,000 base units of USDC on the Base network, where USDC has 6 decimals) per call. Payment is made inline via the X-PAYMENT header — no API keys, accounts, or rate limits are required.
The broader lowpaymentfee.com platform offers a suite of x402-gated APIs 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 priced at $0.02 per request and settle on the Base network using USDC.
This specific endpoint (/api/v1/nfts/82/owner) is an NFT ownership lookup. The response MIME type is application/json. No OpenAPI schema or detailed documentation was found beyond the x402 challenge and the provider's landing page, so the exact request body format and response structure are not documented. The endpoint is live and returned a valid 402 challenge during probing.
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 agent-driven Web3 pipelines
- —Audit NFT provenance by querying owner data on demand
Fit
Best for
- —Agents or apps that need quick, keyless NFT ownership lookups
- —Developers who prefer pay-per-call pricing without subscriptions
- —Web3 workflows requiring on-chain data via simple HTTP calls
Not for
- —Bulk enumeration of all NFT owners in a collection (single-NFT endpoint)
- —Users who need detailed NFT metadata beyond ownership (traits, images, history)
- —Applications requiring free or subscription-based access
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/82/owner \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no OpenAPI schema, no documented request/response format, no examples, and the landing page provides only a brief listing. The specific NFT endpoint is not even listed on the homepage — only generic categories are shown. Effectively a stub with confirmed liveness.
Warnings
- —No OpenAPI or detailed documentation found for this endpoint
- —Request body schema and response schema are unknown — no examples available
- —The /api/v1/nfts/82/owner path is not listed on the provider's homepage; it may be an unlisted or experimental endpoint
- —The platform appears to be a demonstration or early-stage service with many diverse endpoints but minimal documentation
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/82/owner
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/82/owner