NFT collection floor-price data via x402 micropayment on Base, $0.02 per request.
What it does
This endpoint returns floor-price data for NFT collection ID 43 via the x402 payment protocol on the Base network. It is part of a broader suite of pay-per-call APIs hosted at lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request settled in USDC on Base.
The specific resource at `/api/v1/collections/43/floor` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base mainnet. No API keys or accounts are required — access is granted per-request upon valid payment.
Documentation beyond the landing page is extremely sparse; the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of what fields the floor-price response contains or which collection ID 43 refers to. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation limits confidence in what exactly is returned.
Capabilities
Use cases
- —Fetching real-time floor prices for a specific NFT collection
- —Integrating NFT market data into trading bots or dashboards
- —Agent-driven NFT price monitoring with per-call micropayments
Fit
Best for
- —Developers needing keyless, pay-per-call NFT floor data
- —AI agents that can settle x402 payments on Base
- —Quick prototyping without subscription commitments
Not for
- —Bulk historical NFT data retrieval (no batch or historical endpoints documented)
- —Users who need detailed collection metadata beyond floor price
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/collections/43/floor \
-H "X-PAYMENT: <x402-signed-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no examples, and no indication of what collection 43 is. The docs pages are all empty wallet-connect stubs. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no content.
- —No OpenAPI or schema describing request parameters or response fields.
- —Collection ID 43 is unidentified; it is unclear which NFT collection this refers to.
- —The endpoint path suggests a specific collection; generalizability to other collection IDs is unknown.
- —This endpoint is not listed on the provider's own landing page among their advertised APIs.
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Basehttps://lowpaymentfee.com/api/v1/collections/43/floor
- —maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/collections/43/floor
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only a Connect wallet prompthttps://lowpaymentfee.com/docs