NFT collection floor-price lookup via x402 micropayment on Base for $0.02/request
What it does
This endpoint at lowpaymentfee.com returns the floor price for NFT collection ID 19. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all priced at $0.02 per request and settled in USDC on the Base network via the x402 protocol. No API keys or accounts are required — callers simply attach an x402 payment header with each request.
The specific endpoint `/api/v1/collections/19/floor` accepts POST requests and returns JSON. Based on the URL structure, it appears to serve NFT collection floor-price data, though the provider's landing page categorizes its APIs into Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure — this particular endpoint is not explicitly listed on the homepage. The x402 challenge confirms the endpoint is live, accepting USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base with a max amount of 20,000 base units ($0.02 given USDC's 6 decimals).
Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint's exact input parameters and response format must be discovered experimentally.
Capabilities
Use cases
- —Querying the current floor price of a specific NFT collection programmatically
- —Building NFT portfolio trackers that need real-time floor data
- —Agents that monitor NFT market conditions and trigger alerts
Fit
Best for
- —Developers needing quick, keyless NFT floor-price lookups
- —AI agents that can settle x402 micropayments on Base
- —Low-volume or sporadic queries where $0.02/call is cost-effective
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users who need detailed collection metadata, historical charts, or batch queries
- —Anyone without a Base-compatible USDC wallet for x402 payments
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/collections/19/floor \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The specific endpoint is not even listed on the provider's homepage. Effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt
- —This specific endpoint (/api/v1/collections/19/floor) is not listed on the provider's homepage; its exact purpose is inferred from the URL
- —No request or response schema is documented; input parameters and output format are unknown
- —The provider site lists many diverse API categories but none appear to match NFT collection data, raising questions about what this endpoint actually returns
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring USDC on Basehttps://lowpaymentfee.com/api/v1/collections/19/floor
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/collections/19/floor
- —maxAmountRequired is 20000 base units ($0.02 USDC)https://lowpaymentfee.com/api/v1/collections/19/floor
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limitshttps://lowpaymentfee.com