Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.
What it does
lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services. Every endpoint costs $0.02 per request, paid in USDC on the Base network with no API keys, no rate limits, and no commitments required. The specific endpoint at `/api/v1/wire/17` is listed as "Premium API Access" and accepts POST requests settled via the x402 exact-payment scheme.
The 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 appear to follow the same $0.02 per-call pricing model.
Documentation is extremely sparse — 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 crawled content. The x402 challenge on `/api/v1/wire/17` confirms the endpoint is live, accepting POST with USDC payment on Base, but what this specific "wire/17" endpoint actually returns is unknown from the available material.
Capabilities
Use cases
- —Paying per-call for analytics, AI inference, or financial data without signing up for an account
- —Integrating USDC micropayments into agent workflows that need on-demand API access
- —Accessing geocoding, validation, or conversion utilities with no rate limits
Fit
Best for
- —Agents or developers who want zero-signup, pay-as-you-go API access
- —Use cases requiring USDC micropayments on Base L2
- —Quick prototyping where API key management is undesirable
Not for
- —Users who need detailed API documentation or guaranteed SLAs
- —High-volume production workloads where per-request pricing at $0.02 may add up
- —Anyone unable to transact in USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/17 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The x402 challenge confirms the endpoint is live and priced at $0.02 USDC on Base, but there is zero documentation on what /api/v1/wire/17 actually does, no request/response schemas, and no examples. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README all show only 'Connect wallet' with no content
- —No OpenAPI spec or request/response schema for any endpoint
- —The purpose of /api/v1/wire/17 ('Premium API Access') is completely undocumented — it is unclear what data or service it provides
- —Cannot verify that the advertised AI, finance, or utility endpoints actually function as described
Citations
- —All endpoints cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The x402 challenge on /api/v1/wire/17 returns maxAmountRequired of 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02https://lowpaymentfee.com/api/v1/wire/17
- —Platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com