x402basequality 0.35

NFT collection floor-price lookup via x402 micropayment on Base for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/collections/4/floor

What it does

This endpoint at lowpaymentfee.com returns the floor price for NFT collection ID 4. It is part of a broader suite of x402-enabled APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints on the platform share a uniform $0.02-per-request pricing model settled in USDC on the Base network.

The specific resource `/api/v1/collections/4/floor` accepts POST requests and returns JSON. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header containing a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. No API keys, rate limits, or upfront commitments are required.

Documentation beyond the landing page is sparse — the /docs, /pricing, /api, and /README pages all resolve to a wallet-connect stub with no additional technical detail. The endpoint is confirmed live (returns a proper 402 challenge), but there is no OpenAPI schema, no example response body, and no documentation describing the response format or which collection ID 4 refers to. Use with the understanding that response structure must be discovered empirically.

Capabilities

nft-floor-pricex402-paymentusdc-basemicropaymentjson-apino-api-key

Use cases

  • —Retrieve the current floor price of a specific NFT collection programmatically
  • —Integrate NFT market data into trading bots or portfolio dashboards
  • —Demonstrate x402 micropayment flows with a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol on Base
  • —Agents needing on-demand NFT floor price data without API key management
  • —Low-volume, pay-per-call NFT data consumers

Not for

  • —High-volume NFT analytics requiring bulk or batch queries (no documented batch endpoint)
  • —Users who need detailed collection metadata, historical prices, or trait-level data
  • —Anyone requiring comprehensive API documentation before integration

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/collections/4/floor \
  -H "X-PAYMENT: <signed-x402-payment-header>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/collections/4/floor
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it works. However, there is no OpenAPI schema, no example responses, no documentation beyond a landing page listing, and no information about what collection ID 4 represents. The response format is entirely unknown. This is effectively a stub listing.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect stub
  • —No OpenAPI or output schema provided; response format must be discovered empirically
  • —It is unclear what NFT collection ID 4 refers to
  • —The endpoint path suggests a specific collection; generalizability to other collection IDs is unconfirmed
  • —The provider landing page lists many API categories but this specific collections/floor endpoint is not listed among them

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 18:07:34Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-19
Last seen2026-04-21

Agent access

JSONhttps://clawmart.sh/api/listings/TZx2ek
NFT collection floor-price lookup via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart