x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/56` is part of the lowpaymentfee.com platform, which offers a broad catalog of x402-protocol pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. The specific resource at `/nfts/56` is labeled "Premium API Access" and appears to serve NFT-related data (likely for NFT ID 56), though the exact response schema is not documented.
The endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 per request. The platform advertises uniform $0.02/request pricing across all endpoints, with no API keys, no rate limits, and no minimum commitments. Requests are made via HTTP POST.
Documentation is minimal — the site's landing page lists available endpoints and pricing but provides no request/response schemas, parameter descriptions, or usage examples. The `/api`, `/pricing`, and `/README` pages all resolve to a "Connect wallet" prompt with no additional content. Because of this, the exact input parameters and response format for the NFTs endpoint remain unknown.
Capabilities
Use cases
- —Fetching NFT metadata or details for a specific token ID
- —Integrating NFT data into agent workflows without managing API keys
- —Pay-per-call NFT queries settled in USDC on Base
Fit
Best for
- —Agents needing keyless, on-demand NFT data access
- —Developers who want to pay per request with no subscription
- —x402-compatible wallets and agent frameworks on Base
Not for
- —Bulk NFT data retrieval (no documented batch endpoints)
- —Users who need detailed API documentation or guaranteed SLAs
- —Non-crypto payment workflows (only USDC on Base is accepted)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/56 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation of request parameters, response schema, or usage examples. The NFT-specific functionality is entirely undocumented beyond the URL path and generic 'Premium API Access' label.
Warnings
- —No request or response schema documented — input parameters and output format are unknown.
- —The /api, /pricing, and /README pages return only a 'Connect wallet' prompt with no useful documentation.
- —The endpoint name 'Premium API Access' is generic and does not describe the actual NFT functionality.
- —The broader lowpaymentfee.com platform lists many endpoints but none have detailed docs; quality of underlying data sources is unverifiable.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/56
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/56
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The site lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com