x402basequality 0.35

Query NFT ownership data via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/nfts/97/owner

What it does

This endpoint at lowpaymentfee.com returns NFT owner information for token ID 97. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all gated behind the x402 payment protocol. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum cost of $0.02 per request (20,000 base units at 6 decimals).

The provider advertises a wide catalog of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced uniformly at $0.02 per call. No API keys or rate limits are required; access is instant once the x402 payment header is supplied. However, the specific endpoint being listed here (/api/v1/nfts/97/owner) is not explicitly mentioned on the provider's landing page, and no documentation, request/response schema, or examples are available for it. The NFT-related functionality is therefore inferred solely from the URL path and the x402 challenge metadata.

Because there is no OpenAPI spec, no request body schema, and no sample responses, the exact input parameters and output format are unknown. Agents should expect a JSON response containing owner address information for NFT token 97, but the precise structure cannot be confirmed from available materials.

Capabilities

x402-paymentnft-ownership-lookupbase-networkusdc-settlementpay-per-requestjson-api

Use cases

  • —Querying the current owner of a specific NFT (token 97) programmatically
  • —Integrating NFT ownership verification into agent workflows without API keys
  • —Pay-per-call NFT data retrieval settled on Base L2

Fit

Best for

  • —Agents needing on-demand NFT owner lookups without subscription commitments
  • —Developers prototyping x402 payment flows with a low-cost endpoint
  • —Workflows that require verifiable per-call payment for NFT data

Not for

  • —Bulk or batch NFT ownership queries across many token IDs (only token 97 is exposed at this URL)
  • —Users who need detailed NFT metadata beyond ownership
  • —Applications requiring free or subscription-based access

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/nfts/97/owner \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/nfts/97/owner
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI spec, no request/response schema, and the specific NFT endpoint is not listed on the provider's landing page. Effectively a stub listing with minimal verifiable information.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The /api/v1/nfts/97/owner path is not listed on the provider's landing page — its existence is confirmed only by the 402 challenge
  • —No example request or response bodies are available; output format is unknown
  • —The endpoint appears hardcoded to token ID 97; generalizability to other NFT IDs is unconfirmed

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-22 00:32:02Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/9yya7q
Query NFT ownership data via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart