Pay-per-call lab results endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This x402-enabled endpoint at `/api/v1/lab/results/46` is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. All endpoints use the x402 payment protocol on the Base network, accepting USDC (USD Coin) for micropayments.
The specific endpoint `/api/v1/lab/results/46` is listed under the title "Premium API Access" but its exact data payload is not documented in the crawled material. The provider's landing page groups endpoints into categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, all priced uniformly at $0.02 per request. The x402 challenge for this endpoint confirms a `maxAmountRequired` of 20,000 base units of USDC (6 decimals), which equals $0.02. Payment is made via the `exact` scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.
The platform advertises no API keys, no rate limits, and instant access. There is no OpenAPI schema, no detailed documentation for this specific endpoint, and the crawled /api, /pricing, and /README pages returned only a "Connect wallet" prompt with no additional content. The response format is `application/json` per the x402 challenge, but the actual response schema is unknown.
Capabilities
Use cases
- —Fetching lab or analytical results behind a per-call paywall
- —Demonstrating x402 micropayment integration on Base
- —Agent-driven data retrieval with no subscription or API key required
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing keyless, pay-per-use API access on Base
- —Low-volume consumers who want no subscription commitments
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume batch consumers who would benefit from bulk pricing
- —Anyone needing non-USDC or non-Base payment settlement
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/lab/results/46
# Returns 402 with x402 challenge. Include X-PAYMENT header with valid USDC payment on Base to receive the JSON response.Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific endpoint's purpose, request parameters, or response schema. The /api, /pricing, and /README pages are empty beyond a wallet prompt. The listing is effectively a stub with confirmed liveness.
Warnings
- —No documentation exists for /api/v1/lab/results/46 — the purpose and response schema of this endpoint are unknown.
- —The crawled /api, /pricing, and /README pages contain no useful content beyond 'Connect wallet'.
- —No OpenAPI spec or output schema is available for any endpoint on this platform.
- —The endpoint path '/lab/results/46' suggests a specific resource ID; it is unclear whether other IDs are valid or what 'lab results' refers to.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/lab/results/46
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/lab/results/46