x402basequality 0.35

x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/nfts/43

What it does

This endpoint at `/api/v1/nfts/43` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific resource appears to serve NFT-related data (inferred from the URL path), though the provider's landing page does not explicitly document this particular endpoint or its response schema. All endpoints on the platform share the same pricing model.

Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The endpoint accepts POST requests and returns `application/json`. No API keys or rate limits are advertised; access is gated solely by the x402 payment header. The payment timeout is 300 seconds.

The broader platform lists endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, and more — all at the same $0.02/request price point. However, the `/api/v1/nfts/43` endpoint is not listed on the landing page, so its exact response payload and purpose are unclear. There is no OpenAPI spec, no detailed documentation, and the pricing/README pages require wallet connection and yield no additional information.

Capabilities

x402-paymentusdc-basepay-per-requestnft-datajson-responseno-api-key

Use cases

  • —Fetching NFT metadata or details for a specific token ID via a single paid request
  • —Integrating NFT data into an agent workflow without managing API keys
  • —Demonstrating x402 protocol payment flows on Base network

Fit

Best for

  • —Developers experimenting with x402 pay-per-request protocols
  • —Agents needing keyless, on-demand NFT data access
  • —Low-volume or sporadic NFT data lookups at $0.02 per call

Not for

  • —High-volume NFT data ingestion where per-request costs add up
  • —Users needing well-documented, schema-specified NFT APIs with guaranteed fields
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/nfts/43 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/nfts/43
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific NFT endpoint, no OpenAPI schema, no example request/response, and the landing page doesn't even list this route. Effectively a stub with verified liveness.

Warnings

  • —The /api/v1/nfts/43 endpoint is not listed on the provider's landing page — its purpose and response schema are undocumented.
  • —No OpenAPI spec or detailed docs are available; pricing/README pages require wallet connection and return no content.
  • —The exact data returned by this endpoint is unknown — 'NFT data' is inferred solely from the URL path.
  • —The broader platform lists many endpoints but none appear individually documented beyond a name and price.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 23:36:00Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/gZQRXQ
x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC. — Clawmart · Clawmart