x402-gated NFT data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/nfts/70` is part of the lowpaymentfee.com platform, a collection of x402 protocol pay-per-request APIs settled in USDC on the Base network. The specific endpoint appears to serve NFT-related data (resource ID 70) and is accessed via HTTP POST. Payment is handled inline via the x402 protocol — no API keys, accounts, or rate limits are required. Each request costs $0.02 (20,000 base units of USDC with 6 decimals).
The broader lowpaymentfee.com platform advertises endpoints across several categories: data & analytics (metrics, reports, exports, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are uniformly priced at $0.02 per request. This particular NFT endpoint is not listed on the homepage catalog, so its exact response payload is unclear — the listing title is simply "Premium API Access" with no further documentation.
The endpoint is live and returns a valid x402 challenge (HTTP 402) with scheme "exact" on the Base network, paying to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` in USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). No OpenAPI schema, request/response examples, or detailed documentation were found during crawling.
Capabilities
Use cases
- —Fetching NFT metadata or details on a per-request payment basis
- —Integrating NFT data into agent workflows without managing API keys
- —Programmatic access to NFT information settled via USDC on Base
Fit
Best for
- —Agents or bots that need keyless, on-demand NFT data access
- —Developers experimenting with x402 protocol micropayments
- —Low-volume or sporadic NFT data lookups where subscription pricing is wasteful
Not for
- —High-volume NFT data ingestion where per-request costs add up quickly
- —Users who need well-documented, schema-validated NFT APIs with guaranteed response formats
- —Applications requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/nfts/70 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the NFT endpoint is not even listed on the provider's own homepage catalog. The actual data returned is entirely unknown.
Warnings
- —No documentation or schema available for this specific endpoint (/api/v1/nfts/70)
- —Endpoint is not listed on the provider's own homepage API catalog — unclear if it is a production or test resource
- —No response examples or field definitions available; response payload is unknown
- —Provider's /api, /pricing, and /README pages all returned only a 'Connect wallet' prompt with no useful content
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/nfts/70
- —All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/nfts/70