Pay-per-call lab results endpoint on Base via x402, settling in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to a specific lab result resource (ID 72) behind an x402 paywall. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.
The specific resource at `/api/v1/lab/results/72` is labeled "Premium API Access" and returns `application/json`. The x402 challenge confirms the endpoint is live, accepting POST requests, and requires a one-time exact payment of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) per call. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, with a maximum timeout of 300 seconds.
The platform advertises no API keys, no rate limits, and instant access. However, the specific content or schema of the response for this particular lab results endpoint is not documented in the crawled material. The endpoint path suggests it returns structured lab result data for record 72, but without further documentation or example responses, the exact payload structure is unknown.
Capabilities
Use cases
- —Retrieving specific lab result data (record 72) via a single micropayment
- —Integrating pay-per-call data access into agent workflows without API key management
- —Demonstrating x402 payment protocol usage for gated API resources
Fit
Best for
- —Agents or applications that need on-demand access to specific lab result records
- —Developers exploring x402 payment-gated APIs on Base
- —Use cases requiring keyless, pay-as-you-go API access
Not for
- —Bulk retrieval of many lab results (each call costs $0.02 individually)
- —Users who need detailed documentation or guaranteed SLAs for lab data endpoints
- —Applications requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/lab/results/72 \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation for this specific /lab/results/72 path — no request schema, no response schema, no example payloads. The 'lab results' category doesn't appear anywhere on the site's landing page, making the actual content of this endpoint entirely opaque.
Warnings
- —The /api/v1/lab/results/72 path is not listed among the provider's documented APIs on the landing page — its purpose and response format are unknown.
- —No OpenAPI spec, no request/response schema, and no example payloads are available for this endpoint.
- —The crawled /api, /pricing, and /README pages returned only 'Connect wallet' with no useful content.
- —The term 'lab results' could imply health/medical data, which may be subject to regulatory requirements (e.g., HIPAA), but there is no evidence to confirm or deny this.
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20,000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/lab/results/72
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/lab/results/72
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com