x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/74` is part of the lowpaymentfee.com platform, which offers a collection of x402 protocol-gated APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific endpoint appears to serve NFT-related data (resource ID 74), though the exact response payload is not documented beyond the generic "Premium API Access" label.
Payment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per request 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 purely pay-per-call with the x402 payment header.
The platform advertises a uniform $0.02/request pricing across all its endpoints. The probe confirms the endpoint is live, returning a proper 402 challenge with x402 version 1. However, documentation is extremely thin: there is no OpenAPI spec, no request/response schema, and no description of what data the NFT endpoint actually returns. The `/api`, `/pricing`, and `/README` pages all resolve to a minimal "Connect wallet" prompt with no additional information.
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 AI agent workflow without managing API keys
- —Programmatic access to NFT information settled on Base L2 with USDC
Fit
Best for
- —Developers wanting zero-signup, pay-per-request NFT data access
- —AI agents that can handle x402 payment challenges natively
- —Quick prototyping where API key management is undesirable
Not for
- —Production workloads requiring documented, stable response schemas
- —Bulk NFT data retrieval where per-request costs would accumulate quickly
- —Users who need fiat-only payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/74 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation of what the NFT endpoint returns, and the site's docs pages are empty. The listing is effectively a stub with only pricing and network details confirmed.
Warnings
- —No OpenAPI or schema documentation available — request and response formats are unknown.
- —The /api, /pricing, and /README pages contain no useful content beyond 'Connect wallet'.
- —The exact data returned by /api/v1/nfts/74 is undocumented; 'Premium API Access' is a generic label used across all endpoints.
- —NFT endpoint purpose is inferred from the URL path only; actual functionality is unverified.
Citations
- —Uniform pricing of $0.02 per request across all endpoints, no API keys, no rate limitshttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/74
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/74
- —Platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com