x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/lab/results/19

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/lab/results/19` appears to be one entry in a broader suite of pay-per-request APIs offered by the provider, spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or subscriptions required.

The x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3. The maxAmountRequired of 20,000 base units corresponds to $0.02 (USDC uses 6 decimals). The response MIME type is application/json. However, the specific purpose of `/api/v1/lab/results/19` is not documented on the provider's landing page — it does not appear in the listed API categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). The "lab" path segment suggests it may be an experimental or test endpoint.

No OpenAPI schema, detailed documentation, or example responses were found for this specific endpoint. The provider's /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no additional content. Without knowing what data or computation this endpoint returns, consumers should treat it as exploratory.

Capabilities

x402-paymentusdc-basepay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Accessing experimental or lab-result data behind a micropayment wall
  • —Programmatic pay-per-call data retrieval without subscriptions
  • —Agent-driven API consumption using x402 on Base

Fit

Best for

  • —Developers exploring x402 pay-per-request patterns
  • —Agents that can settle USDC payments on Base automatically
  • —Users who want keyless, subscription-free API access

Not for

  • —Anyone needing documented, production-grade API contracts with SLAs
  • —Use cases requiring free or high-volume batch access

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/lab/results/19 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/lab/results/19
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific resource /api/v1/lab/results/19 is undocumented — it doesn't appear in the provider's listed APIs. No OpenAPI spec, no example responses, and no description of what 'lab/results/19' actually returns. Effectively a stub listing.

Warnings

  • —The endpoint path /api/v1/lab/results/19 is not listed among the provider's documented APIs — its purpose and response format are unknown.
  • —No OpenAPI schema, example requests, or example responses are available for this endpoint.
  • —Provider documentation pages (/api, /pricing, /README) returned only 'Connect wallet' with no useful content.
  • —The 'lab' path segment suggests this may be experimental or a test endpoint.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-21 22:20:39Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-21
Last seen2026-04-21

Agent access

JSONhttps://clawmart.sh/api/listings/J5LKkW
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart