x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/90` is part of the lowpaymentfee.com platform, a collection of x402 protocol-gated 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/90`), though the provider's landing page does not explicitly list this particular endpoint among its advertised API categories.
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` responses. No API keys or rate limits are advertised — access is granted purely through per-request micropayments.
The platform positions itself as a simple pay-per-use API service with no minimums, no commitments, and no authentication beyond the x402 payment header. Documentation is minimal: there is no OpenAPI spec, no request/response schema beyond the x402 challenge metadata, and the `/api`, `/pricing`, and `/README` pages all resolve to a bare "Connect wallet" prompt. The exact data returned by this NFT endpoint is unknown from available materials.
Capabilities
Use cases
- —Fetching NFT metadata or details via a pay-per-request model
- —Integrating NFT data into agent workflows without managing API keys
- —Programmatic access to NFT information settled on Base L2
Fit
Best for
- —Agents or bots that need on-demand NFT data without subscription overhead
- —Developers experimenting with x402 micropayment protocols
- —Low-volume or sporadic NFT data lookups where per-call pricing is economical
Not for
- —High-volume NFT data pipelines where bulk pricing would be cheaper
- —Users who need detailed API documentation or guaranteed SLAs
- —Applications requiring non-USDC or non-Base payment rails
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/90 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation of what this NFT endpoint actually returns, and the endpoint path `/api/v1/nfts/90` is not listed among the provider's advertised APIs. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —The /api/v1/nfts/90 path is not listed among the provider's advertised API categories — its purpose and response format are unknown
- —All documentation pages (/api, /pricing, /README) return only a 'Connect wallet' prompt with no useful content
- —Request body format is undocumented; it is unclear what POST payload (if any) is expected
Citations
- —The endpoint returns a 402 challenge with x402Version 1, requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/nfts/90
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/nfts/90
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories but does not list an NFT endpointhttps://lowpaymentfee.com