Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/accounts/87` appears to be one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint is live and returns a valid x402 challenge on POST requests. Payment is settled in USDC (contract 0x8335…2913) on the Base network using the "exact" scheme. The maximum amount required is 20,000 base units, which at 6 decimals for USDC equals $0.02. No API keys are needed; callers simply attach an X-PAYMENT header with a valid payment proof. The timeout window is 300 seconds (5 minutes).
The specific functionality behind `/api/v1/accounts/87` is not documented beyond the generic label "Premium API Access." The provider's landing page lists other endpoints (metrics, reports, sentiment analysis, summarization, etc.) but does not describe this particular accounts endpoint in detail. The docs, pricing, and API pages behind the landing page all require a wallet connection and yield no additional content. Without further documentation, the exact request/response schema for this endpoint remains unknown.
Capabilities
Use cases
- —Accessing premium account data with per-request USDC micropayments
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic access to paid endpoints settled on Base L2
Fit
Best for
- —Developers or agents wanting keyless, pay-as-you-go API access
- —Use cases requiring on-chain USDC settlement on Base
- —Low-friction integration without subscriptions or rate limits
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —High-volume consumers who prefer subscription-based pricing
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/87 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific purpose of the /api/v1/accounts/87 path is entirely unclear. The crawled docs/pricing/API pages are all empty beyond a wallet-connect prompt.
Warnings
- —The specific functionality of /api/v1/accounts/87 is undocumented — 'Premium API Access' is a generic label with no detail on what data or service is returned.
- —No OpenAPI spec, request schema, or response schema is available.
- —All documentation pages (docs, pricing, API, README) require wallet connection and provide no readable content.
- —The provider lists many diverse endpoints (AI, finance, analytics, utilities) all at the same price, which may indicate placeholder or demo services rather than production-grade APIs.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/87
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The provider offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com