x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/55` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-call 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/55`), though the provider's landing page does not explicitly list this particular endpoint among its advertised offerings. The endpoint is live and returns a valid x402 challenge.
Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) via the "exact" scheme. The `maxAmountRequired` is 20,000 base units, which at 6 decimals equals $0.02 per request — consistent with the platform's uniform $0.02/request pricing. No API keys or rate limits are required; callers simply attach an `X-PAYMENT` header with a valid x402 payment proof. The endpoint accepts POST requests and returns `application/json`.
Because the endpoint path (`/nfts/55`) is not documented on the provider's landing page and no OpenAPI schema, request body schema, or response examples are available, the exact input parameters and response structure are unknown. The platform advertises categories like data analytics, AI, finance, and infrastructure utilities, but this NFT endpoint may be a standalone or unlisted resource. Callers should expect a JSON response but will need to experiment or contact the provider for specifics.
Capabilities
Use cases
- —Fetching NFT metadata or details for a specific token ID
- —Integrating NFT data into agent workflows without API key management
- —On-demand NFT lookups with micropayment settlement on Base
Fit
Best for
- —Agents needing keyless, pay-per-call NFT data access
- —Developers prototyping Web3 applications that query NFT info
- —Workflows requiring low-friction micropayment-gated API calls
Not for
- —Bulk NFT data ingestion (no documented batch endpoints)
- —Use cases requiring detailed API documentation or guaranteed SLAs
- —Non-USDC or non-Base payment settlement
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/55 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but the specific /nfts/55 path is not documented on the provider's site. No request schema, response schema, or usage examples are available. The listing is effectively a stub with pricing and protocol details only.
Warnings
- —The /api/v1/nfts/55 endpoint is not listed among the provider's advertised APIs on the landing page.
- —No request body schema or response schema is documented anywhere.
- —No OpenAPI spec, README, or detailed docs were accessible (pages behind wallet connect).
- —Exact purpose and data returned by this endpoint are unknown — inferred only from URL path.
Citations
- —The platform advertises uniform $0.02/request pricing with no API keys, no rate limits, and Base network settlement.https://lowpaymentfee.com
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base.https://lowpaymentfee.com/api/v1/nfts/55
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/nfts/55