Pay-per-call lab results endpoint on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides premium API access to lab results data (resource ID 15) via the x402 payment protocol. It accepts POST requests and returns JSON responses. Payment is settled on the Base network using USDC (contract 0x8335…2913) at a cost of $0.02 per request (20,000 base units with 6 decimals).
The endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform share the same $0.02/request pricing model with no API keys, no rate limits, and no minimum commitments.
The specific endpoint `/api/v1/lab/results/15` is not individually described on the landing page, so its exact data content is unclear — it may return laboratory or experimental results for a specific dataset or test identified by ID 15. No request body schema or response schema documentation was found. The x402 challenge confirms the endpoint is live and accepting payment-gated requests.
Capabilities
Use cases
- —Retrieving lab or experimental results data on demand with per-call payment
- —Integrating pay-per-use data access into agent workflows without API key management
- —Accessing gated data resources via crypto micropayments on Base
Fit
Best for
- —Agents or applications needing on-demand lab/results data without subscription commitments
- —Developers exploring x402 pay-per-call patterns on Base
- —Low-volume or sporadic data consumers who prefer per-request billing
Not for
- —High-volume consumers who need bulk data access at lower per-unit cost
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —Anyone without access to USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/lab/results/15 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific endpoint — no request/response schema, no description of what 'lab results 15' contains, and the crawled pages beyond the landing page returned only 'Connect wallet' with no useful content. The endpoint path does not appear in the site's listed API catalog.
Warnings
- —No documentation found for /api/v1/lab/results/15 specifically — it is not listed among the site's advertised APIs
- —No request body schema or response schema available
- —The exact nature of 'lab results' data is unknown — could be placeholder or demo content
- —Crawled /api, /pricing, and /README pages returned no useful content (only 'Connect wallet')
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base network with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/lab/results/15
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/lab/results/15