x402-gated premium API access on Base, pay $0.02 per request in USDC — no API keys required.
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, rate limits, or subscriptions required.
The specific endpoint `/api/v1/accounts/104` is listed under the provider's umbrella as "Premium API Access," but the crawled documentation does not clarify what data or functionality this particular path returns. The provider's landing page lists other endpoints (metrics, reports, sentiment analysis, summarization, classification, embeddings, price feeds, exchange rates, geocoding, etc.) all at the same $0.02 price point. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) to wallet `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.
Documentation beyond the landing page is extremely thin — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available. The exact purpose and response format of `/api/v1/accounts/104` cannot be determined from the available material.
Capabilities
Use cases
- —Accessing premium data or services with per-request USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API key management
- —Programmatic pay-as-you-go access to a multi-category API platform
Fit
Best for
- —Developers or agents wanting zero-signup, pay-per-call API access
- —x402-compatible wallets and agent frameworks on Base
- —Low-volume or bursty usage patterns where subscriptions are wasteful
Not for
- —Users needing detailed documentation or guaranteed SLAs before integrating
- —High-volume consumers who would benefit from bulk pricing or rate-limited tiers
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/104 \
-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, no OpenAPI spec, no request/response schema, and the specific purpose of /api/v1/accounts/104 is undocumented. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt.
Warnings
- —The exact functionality of /api/v1/accounts/104 is unknown — no documentation describes what this endpoint returns.
- —No OpenAPI spec, request schema, or response schema is available.
- —All documentation pages (/docs, /api, /pricing, /README) render only a 'Connect wallet' prompt with no usable content.
- —Cannot verify what data or service is actually delivered after payment.
Citations
- —Endpoint returns 402 with x402 challenge requiring up to 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/accounts/104
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/104
- —Provider offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com