Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.
What it does
lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/97` is listed as "Premium API Access" and accepts POST requests with payment via USDC (contract 0x8335…2913 on Base). The x402 challenge indicates a max amount of 20,000 base units of USDC (6 decimals), which equals $0.02 per request.
The broader platform advertises multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
However, the specific functionality behind `/api/v1/wire/97` is not documented — the endpoint path does not match any of the named APIs on the landing page. There is no OpenAPI schema, no request/response examples, and the docs, pricing, and API pages all render only a "Connect wallet" prompt with no additional content. Without knowing what this particular endpoint returns, callers should treat it as an opaque premium access endpoint until further documentation is available.
Capabilities
Use cases
- —Programmatic access to premium API services paid per-call with USDC on Base
- —Agent-driven workflows that need keyless, instant API access without subscriptions
- —Testing x402 protocol integrations with a low-cost endpoint
Fit
Best for
- —Developers wanting no-signup, pay-as-you-go API access
- —AI agents that can settle x402 payments autonomously
- —Users already holding USDC on the Base network
Not for
- —Users who need detailed API documentation or guaranteed SLAs before purchasing
- —Anyone without USDC on Base or an x402-compatible payment client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/97 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for what /api/v1/wire/97 actually does, no OpenAPI schema, no request/response examples, and the docs pages are empty. The endpoint path doesn't correspond to any named API on the landing page, making its purpose unknown.
Warnings
- —The specific endpoint /api/v1/wire/97 is not documented anywhere on the site — its purpose and expected input/output are unknown.
- —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.
- —No OpenAPI spec, no request schema, no response schema available.
- —The endpoint path does not match any of the named APIs listed on the landing page.
Citations
- —The x402 challenge returns maxAmountRequired of 20000 base units of USDC (6 decimals) = $0.02 per request on Base networkhttps://lowpaymentfee.com/api/v1/wire/97
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wire/97
- —Available API categories include Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com