Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request.
What it does
lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/wire/22` is listed as "Premium API Access" and accepts POST requests with payment via the x402 protocol. The 402 challenge confirms it is live, requesting up to 20,000 base units of USDC (i.e., $0.02) per call, paid to address 0x1A2B…85F3.
The broader platform advertises four categories of APIs: 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 listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.
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 technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The exact functionality behind the `/api/v1/wire/22` "Premium API Access" endpoint is unclear and may be a generic or catch-all route. Agents should expect to experiment or contact the provider for specifics.
Capabilities
Use cases
- —Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) without API key signup
- —Fetching real-time crypto token quotes and gas estimates via micropayment
- —Running geocoding or data validation calls on a per-request billing basis
- —Exporting data or generating analytics reports with no subscription commitment
Fit
Best for
- —Agents or developers who want instant, keyless API access paid per call
- —Low-volume or bursty workloads where subscription pricing is wasteful
- —Crypto-native applications already operating on the Base network
Not for
- —High-volume production workloads needing SLAs, rate-limit guarantees, or detailed documentation
- —Users without a Base-network USDC wallet or x402-compatible client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/22 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation, and no examples. The purpose of /api/v1/wire/22 specifically is undocumented. This is effectively a stub listing.
Warnings
- —No OpenAPI or schema documentation available — all /docs, /pricing, /api, /README pages return only a wallet-connect prompt
- —The specific endpoint /api/v1/wire/22 ('Premium API Access') has no documented input/output schema; its exact functionality is unknown
- —No request or response examples could be sourced from the crawl
- —No rate-limit or SLA information provided
Citations
- —The endpoint returns a 402 challenge requesting up to 20000 base units of USDC (asset 0x8335…2913) on Base networkhttps://lowpaymentfee.com/api/v1/wire/22
- —All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com