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 results resource (`/api/v1/lab/results/14`) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-request APIs 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 x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the x402 "exact" scheme to a specified wallet address, with the asset being USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys are needed; access is granted per-payment with no rate limits advertised.
The specific resource at `/api/v1/lab/results/14` is labeled "Premium API Access" but its exact data payload is not documented in the crawled material. The broader site lists categories like metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more — all at the same $0.02 price point. Without further documentation or an OpenAPI spec, the precise schema of the response for this particular endpoint is unknown.
Capabilities
Use cases
- —Retrieving lab result data (resource ID 14) on demand with per-call USDC payment
- —Integrating pay-per-use data endpoints into agent workflows without managing API keys
- —Demonstrating x402 payment protocol integration on Base
Fit
Best for
- —Agents or applications needing keyless, pay-per-request data access
- —Developers experimenting with x402 payment protocol on Base
- —Low-volume consumers who want no subscription commitments
Not for
- —Users needing detailed API documentation or OpenAPI schemas before integration
- —High-volume batch processing where per-call pricing may add up
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/lab/results/14 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation of request/response schemas, and the specific purpose of '/api/v1/lab/results/14' is undocumented. The listing is effectively a stub with verified liveness and pricing but little else.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —The exact nature of 'lab results' data at resource ID 14 is undocumented
- —No example responses or request body schemas found in crawled material
- —The /api, /pricing, and /README pages all returned only 'Connect wallet' with no useful content
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, with maxAmountRequired of 20000 base units of USDChttps://lowpaymentfee.com/api/v1/lab/results/14
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/lab/results/14
- —All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com