Pay-per-call lab results endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides premium API access to lab results data at the path `/api/v1/lab/results/80`. It uses the x402 payment protocol, accepting USDC payments on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.
The broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model and settle on the Base network in USDC.
The specific endpoint `/api/v1/lab/results/80` is listed under "Premium API Access" but lacks detailed documentation about what "lab results" data it returns, what input parameters it expects in the POST body, or what the response schema looks like. The probe confirms the endpoint is live (returns a proper 402 challenge), but without further documentation or example responses, the exact nature of the data served remains unclear.
Capabilities
Use cases
- —Retrieving lab results data on-demand with per-call USDC micropayments
- —Integrating pay-as-you-go data access into autonomous agent workflows
- —Accessing premium data without managing API keys or subscriptions
Fit
Best for
- —Agents or applications that need keyless, pay-per-call data access
- —Users who prefer crypto micropayments over subscription billing
- —Developers building on Base who want USDC-settled API calls
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone who cannot transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/lab/results/80 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"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 on what 'lab results' data is returned, no request/response schema, no examples, and the crawled pages beyond the homepage are empty wallet-connect stubs. The endpoint's purpose is essentially opaque.
Warnings
- —No documentation available for what 'lab results' data this endpoint returns
- —No request body schema or response schema provided
- —No example requests or responses available
- —The /api, /pricing, and /README pages returned only 'Connect wallet' with no useful content
- —The meaning of the path parameter '80' in /api/v1/lab/results/80 is unknown
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/lab/results/80
- —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 USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/lab/results/80