x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides premium API access to NFT data via the x402 payment protocol. The specific resource `/api/v1/nfts/2` is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities.
The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) via the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. No API keys, rate limits, or upfront commitments are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The platform advertises a uniform $0.02 per-request price across all its endpoints. Documentation beyond the landing page is sparse: the /api, /pricing, and /README routes all resolve to a minimal "Connect wallet" page with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact data returned by the `/api/v1/nfts/2` endpoint (e.g., NFT metadata, ownership info, or collection data) is not documented and must be inferred from the path.
Capabilities
Use cases
- —Fetching NFT metadata or details programmatically with per-call USDC payment
- —Integrating NFT data into agent workflows without managing API keys
- —Exploring x402 payment protocol for micropayment-gated API access
Fit
Best for
- —Developers experimenting with x402 micropayment APIs
- —Agents needing keyless, pay-per-call NFT data on Base
- —Prototyping crypto-native API consumption patterns
Not for
- —Production workloads requiring documented request/response schemas
- —High-volume NFT data needs where bulk pricing is preferred
- —Users without USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/2 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming it is operational. However, there is no OpenAPI spec, no documented request/response schema, no examples, and the /api, /pricing, and /README pages are all empty beyond a wallet connect prompt. The actual data returned is unknown.
Warnings
- —No request or response schema documented — callers must discover behavior empirically
- —The /api, /pricing, and /README pages contain no useful documentation
- —The specific data returned by /api/v1/nfts/2 is not described anywhere in available materials
- —No OpenAPI or ai-plugin manifest available
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/2
- —Platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/nfts/2