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 on the Base network. The specific endpoint `/api/v1/accounts/181` 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 Base with no API keys, rate limits, or commitments required.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the `exact` scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The response MIME type is `application/json`. The endpoint timeout is 300 seconds.
However, the specific functionality of the `/api/v1/accounts/181` path is unclear. The provider's landing page lists various API categories (metrics, reports, sentiment analysis, summarization, price feeds, geocoding, etc.) but does not document an `/accounts/` route. No OpenAPI spec, detailed documentation, or example request/response payloads were found in the crawl. The docs, pricing, API, and README pages all rendered only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Accessing premium API data with per-request USDC micropayments on Base
- —Agent-driven API consumption without pre-registration or API keys
- —Programmatic account data retrieval via x402 payment flow
Fit
Best for
- —Developers wanting zero-signup, pay-as-you-go API access
- —AI agents that can settle x402 payments in USDC on Base
- —Low-volume or sporadic API consumers who prefer no subscriptions
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —High-volume consumers who need bulk pricing or rate-limit guarantees
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/181 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, the specific purpose of /api/v1/accounts/181 is undocumented, there is no OpenAPI spec, no example requests or responses, and the docs/pricing/README pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —The /api/v1/accounts/181 path is not listed on the provider's landing page — its specific functionality is unknown.
- —No OpenAPI spec, request schema, or response schema is available.
- —All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' prompt with no substantive content.
- —The provider lists many diverse API categories (AI, finance, analytics, infrastructure) but provides no detailed documentation for any of them.
Citations
- —Endpoint returns 402 with x402 challenge accepting USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/181
- —Max amount required is 20000 base units of USDC (6 decimals = $0.02)https://lowpaymentfee.com/api/v1/accounts/181
- —Provider advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/181
- —Provider lists endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com