x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/31` 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 resource `/api/v1/nfts/31` is labeled "Premium API Access" and returns JSON data, likely related to NFT information (given the `/nfts/31` path), though the exact response schema is not documented.
The endpoint is live and responds with a standard x402 payment challenge. It accepts USDC payments on the Base network at a maximum cost of $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using the "exact" scheme. The endpoint uses HTTP POST and has a payment timeout of 300 seconds.
The broader lowpaymentfee.com platform advertises a uniform $0.02/request pricing model across all its endpoints, with no API keys, no rate limits, and no minimum commitments required. All endpoints settle on the Base network. However, documentation is extremely sparse — there is no OpenAPI spec, no response schema, and no usage examples available. The actual data returned by this NFT endpoint is unknown beyond the `application/json` MIME type.
Capabilities
Use cases
- —Retrieving NFT metadata or details for token ID 31 on demand
- —Integrating pay-per-request NFT data into agent workflows without API key management
- —Programmatic access to NFT information settled via USDC on Base
Fit
Best for
- —Agents needing keyless, pay-per-call NFT data access
- —Developers experimenting with x402 protocol integrations
- —Low-volume or sporadic NFT data lookups where $0.02/call is acceptable
Not for
- —High-volume NFT data needs where per-call costs would accumulate quickly
- —Use cases requiring well-documented response schemas or guaranteed SLAs
- —Users who need non-USDC or non-Base-network payment options
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/31 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no OpenAPI spec, no response schema, no documentation of what the NFT endpoint actually returns, and no usage examples. The listing is effectively a stub with only payment metadata confirmed.
Warnings
- —No OpenAPI or response schema available — the actual data returned by /api/v1/nfts/31 is unknown
- —No documentation beyond the landing page listing; /api, /pricing, and /README pages all just show 'Connect wallet'
- —The endpoint description 'Premium API Access' is generic and does not clarify what NFT data is provided
- —Cannot verify what NFT collection or data source backs this endpoint
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/nfts/31
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/31