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. It is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, settled in USDC on the Base network, with no API keys, no rate limits, and no minimum commitments required.
The specific endpoint `/api/v1/accounts/101` is listed under the provider's umbrella as "Premium API Access" but its exact functionality is not documented in the available crawl material. The provider's landing page lists sibling endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. The accounts endpoint likely provides some form of account or profile data, but the precise request/response schema is not documented.
Payment is handled via the x402 exact-payment scheme: callers must include an X-PAYMENT header with a USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals) to the specified payTo address on Base. The endpoint accepts POST requests and returns application/json. The x402 challenge was confirmed live with a proper 402 response.
Capabilities
Use cases
- —Accessing account or profile data with per-request USDC micropayments
- —Integrating pay-as-you-go API access into agent workflows without API key management
- —Demonstrating x402 payment protocol integration on Base
Fit
Best for
- —Developers wanting keyless, pay-per-call API access
- —AI agents that can settle x402 payments in USDC on Base
- —Projects needing low-friction API access without subscriptions or rate limits
Not for
- —Users who need detailed API documentation or OpenAPI schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscription plans
- —Users without access to USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/101 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation for the /api/v1/accounts/101 endpoint specifically — no request schema, no response schema, no examples. The docs, pricing, and README pages all returned only 'Connect wallet' with no useful content.
Warnings
- —No documentation available for the /api/v1/accounts/101 endpoint — its exact purpose and request/response format are unknown.
- —The docs, pricing, API, and README pages all returned only 'Connect wallet' with no substantive content.
- —No OpenAPI spec or output schema beyond basic HTTP method info is provided.
- —The 'Premium API Access' description is generic and does not clarify what data or functionality this endpoint provides.
Citations
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —The x402 challenge returns maxAmountRequired of 20000 base units in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, which equals $0.02.https://lowpaymentfee.com/api/v1/accounts/101
- —The provider offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories.https://lowpaymentfee.com