x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/72` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call 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 `/nfts/72`), though the provider's landing page does not explicitly list this particular endpoint among its advertised APIs. The endpoint is live and returns a valid x402 challenge.
Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the "exact" scheme. The `maxAmountRequired` is 20,000 base units, which at 6 decimals equals $0.02 per request. No API keys or rate limits are advertised — callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The response MIME type is `application/json`, and the endpoint accepts HTTP POST.
The broader lowpaymentfee.com platform advertises a uniform $0.02/request pricing model across all its endpoints, with categories including sentiment analysis, text summarization, embeddings, price feeds, gas estimates, geocoding, and more. However, documentation is extremely thin: no OpenAPI spec, no request/response schema details, and no examples are provided for any endpoint. The actual data returned by `/api/v1/nfts/72` is unknown beyond the JSON content type.
Capabilities
Use cases
- —Fetching NFT metadata or details for token ID 72 via a micropayment-gated API
- —Integrating pay-per-call NFT data into an AI agent workflow without managing API keys
- —Programmatic access to NFT information settled in USDC on Base
Fit
Best for
- —Developers wanting keyless, pay-per-call NFT data access
- —AI agents that can settle x402 payments on Base
- —Quick one-off NFT data lookups without subscription commitments
Not for
- —High-volume NFT data ingestion where per-call costs add up
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/72 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation for this specific NFT endpoint, and it is not even listed on the provider's landing page. The actual functionality is entirely inferred from the URL path.
Warnings
- —No OpenAPI or schema documentation available for any endpoint on this platform
- —The /api/v1/nfts/72 endpoint is not listed among the provider's advertised APIs — its purpose and response format are unknown
- —No request body schema or response examples are available; callers must discover behavior empirically
- —The broader platform lists many endpoint categories but provides zero technical documentation for any of them
Citations
- —The platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The x402 challenge returns maxAmountRequired of 20000 base units in USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Basehttps://lowpaymentfee.com/api/v1/nfts/72
- —The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com