x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/99` 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 99), 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-wide flat pricing of $0.02/request. The platform emphasizes no API keys, no rate limits, and instant access; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The endpoint accepts POST requests and returns `application/json`.
The broader lowpaymentfee.com platform lists roughly 16 endpoints across four categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). No OpenAPI schema, detailed request/response documentation, or usage examples were found in the crawl. The NFT endpoint specifically (`/api/v1/nfts/99`) is not listed on the homepage's catalog, so its purpose and response format remain unclear. Treat this as a lightly documented, live x402 endpoint with confirmed payment challenge.
Capabilities
Use cases
- —Fetching NFT metadata or details via a pay-per-request model
- —Integrating NFT data into agent workflows without API key management
- —Programmatic access to NFT information settled on Base L2
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-call over subscriptions
Not for
- —High-volume NFT data consumers who need bulk/batch endpoints
- —Users who need detailed documentation or guaranteed SLAs
- —Anyone requiring non-USDC or non-Base payment settlement
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/99 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live with a valid x402 402 challenge and confirmed pricing, but there is no OpenAPI schema, no request/response documentation, and the specific NFT endpoint is not even listed on the provider's homepage. The response format and input parameters are entirely unknown.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —The /api/v1/nfts/99 path is not listed on the provider's homepage catalog — its purpose and data source are unclear
- —No example responses or request body schemas found in crawl
- —The /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content
Citations
- —x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/99
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/99
- —Platform-wide pricing is $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —The NFT endpoint /api/v1/nfts/99 is not listed among the homepage's available APIshttps://lowpaymentfee.com