x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/45` 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 `/nfts/45`), though the provider's landing page does not explicitly list this particular endpoint among its advertised API categories. 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; access is granted purely through the x402 payment header. The response MIME type is `application/json` and the endpoint accepts HTTP POST.
The platform advertises a uniform $0.02/request pricing model across all its endpoints with no minimums or commitments. Documentation is extremely sparse — the `/api`, `/pricing`, and `/README` pages all resolve to a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The actual data returned by this NFT endpoint is unknown beyond the JSON content type.
Capabilities
Use cases
- —Fetching NFT metadata or details for token ID 45 via a single paid request
- —Integrating pay-per-call NFT data into an AI agent workflow without managing API keys
- —Programmatic access to NFT information settled on Base L2 in USDC
Fit
Best for
- —Developers wanting keyless, pay-per-use 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-request costs add up
- —Users needing detailed API documentation or guaranteed SLAs
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/45
# Returns 402 with x402 challenge. Include X-PAYMENT header with valid payment proof to receive data.Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request parameters, response schema, or what data this NFT endpoint actually returns. The /nfts/45 path is not listed among the provider's advertised endpoints, and all doc pages just show 'Connect wallet'. Effectively a stub listing.
Warnings
- —No documentation available — /api, /pricing, and /README pages all show only 'Connect wallet'
- —No OpenAPI spec or request/response schema provided
- —The /api/v1/nfts/45 endpoint is not listed among the provider's advertised API categories, so its purpose is unclear
- —Actual response payload structure is completely unknown
Citations
- —Uniform pricing of $0.02 per request with no minimums or commitmentshttps://lowpaymentfee.com
- —Payment on Base network, no API keys, no rate limitshttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units in USDC (6 decimals) = $0.02https://lowpaymentfee.com/api/v1/nfts/45
- —USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/45