NFT collection floor-price lookup via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns the floor price for NFT collection ID 7. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all settled via the x402 protocol on the Base network using USDC. The specific path `/api/v1/collections/7/floor` suggests an NFT or digital-asset collections data service, though the provider's landing page categorizes its offerings under Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure — this particular endpoint does not appear in the listed catalog, so its exact data source and response schema are unclear.
Payment is handled inline: callers send an `X-PAYMENT` header containing a signed USDC payment on Base. The x402 challenge confirms the endpoint is live, accepting up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per request. There are no API keys, no rate limits, and no subscription commitments — each call is independently settled on-chain. The payment recipient address is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, and the USDC asset contract is `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` (canonical USDC on Base).
Documentation is extremely sparse. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional content. No OpenAPI spec, example responses, or detailed field descriptions are available. The endpoint's output schema is not documented beyond `application/json` MIME type. Use with caution until richer documentation is published.
Capabilities
Use cases
- —Querying the current floor price of a specific NFT collection
- —Building NFT portfolio trackers that need real-time floor data
- —Automated trading bots that check floor prices before bidding
Fit
Best for
- —Agents needing on-demand NFT floor prices without API key management
- —Micropayment-friendly workflows on Base L2
- —Quick, stateless lookups with no subscription overhead
Not for
- —Bulk historical NFT price data (no batch or historical endpoint documented)
- —Users who cannot transact USDC on Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/collections/7/floor \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-header>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no documented response schema, no example responses, and the docs pages are empty. The specific endpoint (/collections/7/floor) is not even listed on the provider's own landing page, making its purpose and output largely inferred from the URL path.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown.
- —This specific endpoint (/api/v1/collections/7/floor) does not appear in the provider's published API catalog.
- —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no useful content.
- —The nature of 'collection 7' is unspecified; it is unclear what NFT collection or data source this refers to.
Citations
- —The x402 challenge returns 402 with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/collections/7/floor
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/collections/7/floor
- —All APIs priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com