x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/15` 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 endpoint appears to serve NFT-related data (resource ID 15), though the exact response payload is not documented. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 "exact" scheme.
The x402 challenge advertises a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this converts to $0.02 per request — consistent with the site's uniform $0.02/request pricing across all listed endpoints. No API keys or rate limits are required; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The endpoint accepts POST requests and returns `application/json`.
The platform markets itself as a no-commitment, pay-as-you-go API marketplace. However, documentation is extremely thin: there is no OpenAPI spec, no request/response schema, and no usage examples. The `/api`, `/pricing`, and `/README` pages all resolve to a bare "Connect wallet" prompt with no additional content. The NFT endpoint specifically (`/api/v1/nfts/15`) is not listed on the homepage's catalog of available APIs, making its exact purpose unclear.
Capabilities
Use cases
- —Fetching NFT metadata or details for a specific token ID via a single paid request
- —Integrating pay-per-call NFT data into an agent workflow without managing API keys
- —Programmatic access to NFT information settled in USDC on Base
Fit
Best for
- —Agents or bots that need keyless, on-demand NFT data access
- —Developers experimenting with x402 payment protocol integrations
- —Low-volume consumers who prefer pay-per-request over subscriptions
Not for
- —High-volume NFT data consumers who need bulk or streaming access
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/15 \
-H "X-PAYMENT: <x402-payment-proof>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation, and this specific NFT endpoint is not even listed on the provider's homepage. The actual data returned is unknown.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —The /api/v1/nfts/15 endpoint is not listed in the provider's own homepage catalog — its purpose and response format are unverified
- —All documentation pages (/api, /pricing, /README) return only a 'Connect wallet' prompt with no useful content
- —Request body schema and response schema are completely unknown
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/15
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/15
- —Platform advertises $0.02/request uniform pricing with no API keys, no rate limitshttps://lowpaymentfee.com
- —The /api/v1/nfts/15 endpoint is not listed among the homepage's available APIshttps://lowpaymentfee.com